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Publikationen

 

2014

 

564.     Baraa Siyo, Matthias Schneider, Marga-Martina Pohl, Peter Langer, Norbert Steinfeldt*, Cat. Commun. 2014, accepted.

“Synthesis, characterization, and application of PVP-Pd NP in the aerobic
oxidation of 5-hydroxymethylfurfural (HMF)

 

563.     Johannes Diebler, Jan von Langermann, Annett Mell, Martin Hein, Peter Langer, Udo Kragl*, ChemCatChem 2014, accepted.

“Synthesis of Aliphatic and α-Halogenated Ketone Cyanohydrins with the Hydroxynitrile Lyase from Manihot esculenta”.

 

562.     Peter Ehlers, Andranik Petrosyan,  Antje Neubauer, Stefan Lochbrunner, Tariel V. Ghochikyan, Ashot S. Saghyan, Peter Langer*, J. Org. Chem. 2014, accepted.

“Synthesis of Fluorescent 2,3,5,6-Tetra(alkynyl)pyridines by Site-Selective Sonogashira-Reactions of 2,3,5,6-Tetrachloropyridines”.

 

561.     Friedrich Erben, Dirk Michalik, Holger Feist, Dennis Kleeblatt, Martin Hein, Abdul Matin, Jamshed Iqbal, Peter Langer*, RSC Advances 2014, accepted.

“Synthesis and Antiproliferative Activity of (Z)-1-Glycosyl-3-(5-oxo-2-thioxoimidazolidin-4-ylidene)indolin-2-ones and (Z)-3-(2-Glycosylsulfanyl-4-oxo-4,5-dihydro-thiazol-5-ylidene)indolin-2-ones”.

 

560.     Ashot S. Saghyan,*, Hayarpi M. Simonyan, Satenik G. Petrosyan, Anna F. Mkrtchyan, Lilit V. Khachatryan, Arpine V. Geolchanyan, Melanya A. Samvelyan, Tariel V. Ghochikyan, Nazken Kelzhanova, Amanzhan T. Saginayev, Peter Langer*, Z. Naturforsch. B 2014, accepted.

“Asymmetric Synthesis of Enantiomerically Enriched α-Amino Acids Containing Furans, Thiophenes and 1,2,4-Triazoles in the Side-Chain”.

 

559.     Jennifer Hefner, Simone Ladzik, Michael Lalk, Nazken Kelzhanova, Amanzhan T. Saginayev, Qamar Rahman, Alexander Villinger, Christine Fischer, Peter Langer*, Z. Naturforsch. B 2014, accepted.

“Synthesis of Functionalized Diaryldiazenes by Formal [3+3] Cyclizations of 1,3-Bis(silyloxy)-1,3-butadienes with 2-Aryldiazenyl-3-silyloxy-2-en-1-ones”.

 

558.     Tran Quang Hung, Ngo Ngoc Thang, Do Huy Hoang, Tuan Thanh Dang,* Alexander Villinger, Peter Langer*, Org. Biomol. Chem. 2014, accepted.

“Efficient Synthesis of Biscarbazoles by Palladium-Catalyzed Twofold C-N Coupling and C-H Activation Reactions”.

 

557.     Xiao-Feng Wu,* Stefan Oschatz, Muhammad Sharif, Anika Flader, Lisa Krey, Matthias Beller, Peter Langer,* Adv. Synth. Catal. 2014, in print.

“Palladium-Catalyzed Carbonylative Synthesis of Phthalimides from 1,2-Dibromoarenes with Mo(CO)6 as CO source”.

 

556.     Munawar Hussain, Nguyen Thai Hung, Naeem Abbas, Rasheed Ahmad Khera, Imran Malik, Tamás Patonay, Nazken Kelzhanova, Zharylkasyn A. Abilov, Alexander Villinger, Peter Langer*, J. Heterocycl. Chem. 2014, in print.

“Synthesis of Arylated Benzofurans by Regioselective Suzuki-Miyaura Cross-Coupling Reactions of 2,3-Di- and 2,3,5-Tribromobenzofurans”.

 

555.     Stefanie Knak, Wolf-Diethard Pfeiffer,* Horst Dollinger, Peter Langer*, J. Heterocycl. Chem. 2014, in print.

“Synthesis and Reactivity of 2-Pyrrolidino-, 2-N-Methylpiperazino-, 2-Piperidino- and 2-Morpholino-1,3,4-thiadiazines”.

 

554.     Stefanie Knak, Wolf-Diethard Pfeiffer,* Horst Dollinger, Ashot Saghyan, Peter Langer*, J. Heterocycl. Chem. 2014, in print.

“Synthesis of Imidazo[2,1-b][2H-1,3,4]thiadiazines and 1,2,4-Triazolo[3,4-b][2H-1,3,4]thiadiazines”.

 

553.     Harald Below,* Wolf-Diethard Pfeiffer, Karlheinz Geisler, Ashot S. Saghyan, Christine Fischer, Peter Langer*, J. Heterocycl. Chem. 2014, in print.

“Synthesis of 2-Unsubstituted 1,3-Selenazoles by Cyclization of Selenoformamide with α-Bromocarbonyl Compounds”.

 

552.     Wolf-Diethard Pfeiffer,* Klaus-Dieter Ahlers, Abiodun Falodun, Alexander Villinger, Peter Langer,* Phosphorus, Sulfur, Silicon Related El. 2014, in print.

“Synthesis and Spectroscopic Characterization of Arylated Selenoureas”.

 

551.     Wolf-Diethard Pfeiffer,* Klaus-Dieter Ahlers, Ashot S. Saghyan, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2014, in print.

“Unexpected Ring-Enlargement of 2-Hydrazono-2,3-dihydro-1,3-thiazoles to 1,3,4-Thiadiazines”.

 

550.     Sven Rotzoll, Jörg-Peter Gütlein, Dirk Michalik*, Zharylkasyn A. Abilov, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2014, in print.

“Synthesis of 2,3-benzo-1,4-diazabicyclo[4.3.0]nonanes by cyclization of 1,5-bis(silyloxy)penta-1,4-dienes with quinoxalines”.

 

549.     Wolf-Diethard Pfeiffer,* Dieter Junghans, Ashot S. Saghyan, Peter Langer*, J. Heterocycl. Chem. 2014, in print.

“Cyclization of 4-phenyl-thiosemicarbazide with α-bromoacetophenone revisited. Formation of 1,3,4-thiadiazines and of isomeric 1,3-thiazoles”.

 

548.     Nadja Engel, Abiodun Falodun,* Christina Oppermann, Udo Kragl, Barbara Nebe, Joyce Falodun, Peter Langer, Pharm. Biology 2014, in print.

“ANTITUMOR ACTIVITY OF FOUR MEDICINAL PLANTS FROM NIGERIA:  CELL CYCLE AND ADHESION RELATED EFFECTS IN HUMAN BREAST CANCER CELL LINE”.

 

547.     Franziska Bendrath, Abiodun Falodun, Zharylkasyn A. Abilov, Alexander Villinger, Peter Langer*, J. Heterocycl. Chem. 2014, in print.

“Regioselective Synthesis of Pyrazoles and Isoxazoles with Cyclopropanated Side-Chain”.

 

546.     Muhammad Sharif, Julita Opalach, Peter Langer, Matthias Beller, Xiao-Feng Wu*, RSC Advances 2014, 4, 8-17.

“Oxidative Synthesis of Quinazolinones and Benzothiadiazine 1,1-Dioxides from 2-Aminobenzamide and 2-Aminobenzenesulfonamide with Benzyl Alcohols and Aldehydes”.

 

545.     Wolf-Diethard Pfeiffer,* Harald Roßberg, Nazken Kelzhanova, Amanzhan T. Saginayev, Alexander Villinger, Peter Langer*, Heterocyles 2014, 88, 1397-1431.

“Synthesis and Reactions of 1,3,4-Selenadiazines”.

 

544.     Muhammad Sharif, Anahit Pews–Davtyan, Jan Lukas, Johannes Schrank, Peter Langer, Arndt Rolfs, Matthias Beller*, Eur. J. Org. Chem. 2014, 222-230.

“Carbonylative Transformations of Bromohexyne to New Bioactive Compounds”.

 

543.     Muhammad Imran, Inam Iqbal, Zharylkasyn A. Abilov, Peter Langer*, Phosphorus, Sulfur, Silicon Related El. 2014, 189, 255-262.

“Synthesis of 2-Arylthio-5-aryldiazenyl-benzoates by Formal [3+3] Cyclizations of 3-Arythio-1-silyloxy-1,3-butadienes with 2-Aryldiazenyl-3-silyloxy-2-en-1-ones”.

 

 

2013


542.     Franziska Bendrath, Zharylkasyn A. Abilov, Abiodun Falodun, Martin Hein, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2013, 96, 2185-2190.

“Regioselective Synthesis of 5-(2-Cyanoethyl)biphenyls by Formal [3+3]-Cyclocondensations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

541.     Mostafa Kiamehr, Firouz Matloubi Moghaddam,* Volodymyr Semeniuchenko, Alexander Villinger, Peter Langer,* Viktor O. Iaroshenko*, Tetrahedron Lett. 2013, 54, 5018–5021.

“Facile Synthesis of Thiochromeno[2,3-b]indol-11(6H)-ones and Pyrido[3',2':5,6]thiopyrano[2,3-b]indol-5(10H)-ones”.

 

540.     Rüdiger Dede, Abdolmajid Riahi, Mohanad Shkoor, Mirza A. Yawer, Ibrar Hussain, Zharylkasyn A. Abilov, Abiodun Falodun, Helmar Görls, Christine Fischer, Peter Langer*, Z. Naturforsch. B 2013, 68b, 1021-1030.

“Synthesis of Functionalized Acetophenones by Formal [3+3] Cyclocondensations of 1,3-Bis(Silyloxy)-1,3-butadienes with 3-Alkoxy and 3-Silyloxy-2-acetyl-2-en-1-ones”.

 

539.     Muhammad Adeel,* Peter Langer, Alexander Villinger, Chinese J. Struct. Chem. 2013, 32, 1139-1142.

“Synthesis and Single-crystal X-ray Studies of (E)-ethyl 2-fluoro-2-(3-oxoisobenzofuran-1(3H)-ylidene) acetate”.

 

538.     Omer A. Akrawi, Afsar Khan, Tamás Patonay, Alexander Villinger, Peter Langer*, Tetrahedron 2013, 69, 9013-9024.

“Synthesis of Arylated Anthraquinones by Site-selective Suzuki-Miyaura Reactions of the Bis(triflates) of 1,3-Di(hydroxy)anthraquinones”.

 

537.     A. S. Saghyan*, G. M. Mkrtchyan, S. G. Petrosyan, H. M. Simonyan, A. V. Geolchanyan, P. Langer, Chemical Journal of Armenia 2013, 66, 275-281.

“Asymmetric Synthesis of Enantiomerically Enriched 2-Mercaptobenzothiazole and 2-Mercaptobenzoxazole containing (S)-α-Alanines”.

 

536.     Zien Khaddour, Nadi Eleya, Omer A. Akrawi, Aws M. Hamdy, Tamás Patonay, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2013, 54, 5201-5203.

“Chemoselective Suzuki-Miyaura Cross-Coupling Reactions of the Methyl 4-Bromo-3-(trifluoromethyl-sulfonyloxy)-2-naphthoate”.

 

535.     Zien Khaddour, Nadi Eleya, Omer A. Akrawi, Aws M. Hamdy, Tamás Patonay, Alexander Villinger, Peter Langer*, Synlett 2013, 24, 2114-2118.

“Site-Selective Suzuki-Miyaura Cross-Coupling Reactions of the Bis(triflate) of Methyl 3,7-Dihydroxy-2-naphthoate”.

 

534.     Sebastian Reimann, Kai Wittler, Muhammad Sharif, Stella Schmode, Anke Spannenberg, Ralf Ludwig, and Peter Langer*, Eur. J. Org. Chem. 2013, 8115–8134.

“Site-Selective Sonogashira Reactions of 1,4-Dibromo-2-(trifluoromethyl)benzene – Synthesis and Properties of Fluorinated Alkynylbenzenes”.

 

533.     Muhammad Farooq Ibad, Dhafer Saber Zinad, Munawar Hussain, Asad Ali, Alexander Villinger, Peter Langer*, Tetrahedron 2013, 69, 7492-7504.

“One-Pot Synthesis of Arylated 1-Methyl-1H-indoles by Suzuki-Miyaura Cross-Coupling Reactions of 2,3-Dibromo-1-methyl-1H-indole and 2,3,6-Tribromo-1-methyl-1H-indole”.

 

532.     Xiao-Feng Wu,* Muhammad Sharif, Jian-Bo Feng, Helfried Neumann, Anahit Pews-Davtyan, Peter Langer, Matthias Beller*, Green Chemistry 2013, 15, 1956-1961.

“A General and Practical Oxidation of Alcohols to Primary Amides under Metal-Free Conditions”.

 

531.     Peter Ehlers, Ani Hakobyan, Antje Neubauer, Stefan Lochbrunner, Peter Langer*, Adv. Synth. Catal. 2013, 355, 1849-1858.

“Tetraalkynylated and Tetraalkenylated Benzenes and Pyridines. Synthesis and Photophysical Properties”.

 

530.     Friedrich Erben, Dennis Kleeblatt, Marcel Sonneck, Martin Hein, Holger Feist, Thomas Fahrenwaldt, Christine Fischer, Abdul Matin, Jamshed Iqbal, Michael Plötz, Jürgen Eberle, Peter Langer*, Org. Biomol. Chem. 2013, 11, 3963-3978.

“Synthesis and Antiproliferative Activity of Selenoindirubins and Selenoindirubin-N-glycosides”.

 

529.     Wolf-Diethard Pfeiffer,* Helmut Gille, Ehrenfried Bulka, Ashot S. Saghyan, Peter Langer*, Z. Naturforsch. B 2013, 68b, 823-830.

“Cyclocondensations of Substituted Thiosemicarbazides with 2-Bromo-1,2-diphenylethan-1-one“.

 

528.     Van Thi Hong Nguyen, Bui Duy Cam, Zafar Ahmed, and Peter Langer*, Z. Naturforsch. B 2013, 68b, 836-840.

“4-tert-Butoxy-1-ethoxy-1,3-bis(trimethylsilyloxy)-1,3-butadiene. A new Diene and its Application to the Synthesis of γ-Alkylidenetetronic acids”.

 

527.     Iftikhar Ali,* Abiodun Falodun, Godwin C. Josephs, Hidayat Hussain, Ulf Karsten, Peter Langer, African Journal of Pharmaceutical Research & Development 2013, 5, 25-29.

“Characterization and Antimicrobial Evaluation of Epiafzelechin from the Stem Bark of Calliandra surinamensis Benth”.

 

526.     Mathias Lubbe, Franziska Bendrath, Tiana Trabhardt, Alexander Villinger, Christine Fischer, Peter Langer*, Tetrahedron 2013, 69, 5998-6007.

“Regioselective Synthesis of 3-(Methylthio)phenols by Formal [3+3]-Cyclocondensations of 3-Oxo-bis(methylthio)ketenacetals with 1,3-Bis(trimethylsilyloxy)-1,3-butadienes and 1,3-Dicarbonyl Dianions”.

 

525.     Aws Hamdy, Nadi Eleya, Hamid Mohammed, Zien Khaddour, Tamás Patonay, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2013, 54, 3568-3571.

“Site-Selective Suzuki-Miyaura Cross-Coupling Reactions of 4-Methyl-5,7-bis(trifluoromethylsulfonyloxy)-coumarine”.

 

524.     Viktor O. Iaroshenko,* Sergii Dudkin, Vyacheslav Ya. Sosnovskikh, Alexander Villinger, Peter Langer,* Eur. J. Org. Chem. 2013, 3166–3173.

“β-D-Ribofuranosyl)formamidine in the design and synthesis of novel 2-(β-D-ribofuranosyl)pyrimidines, including RF-containing derivatives.“

 

523.     Xiao-Feng Wu,* Andranik Petrosyan, Tariel V. Ghochikyan, Ashot S. Saghyan, Peter Langer*, Tetrahedron Lett. 2013, 54, 3158-3159.

“Metal-free Oxidation of Benzyl Amines to Imines”.

 

522.     Xiao-Feng Wu*, Muhammad Sharif, Anahit Pews-Davtyan, Peter Langer, Khurshid Ayub, Matthias Beller,* Eur. J. Org. Chem. 2013, 2783–2787.

“Zn(II)-Catalyzed Oxidative Amidation of Benzylalcohols with Alkylamines under Solvent-free Conditions”.

 

521.     Mostafa Kiamehr, Firouz Matloubi Moghaddam,* Satenik Mkrtchyan, Volodymyr Semeniuchenko, Linda Supe, Alexander Villinger, Peter Langer,* Viktor O. Iaroshenko,* Beilstein J. Org. Chem. 2013, 9, 1119-1126.

“Tandem dinucleophilic cyclization of cyclohexane-1,3-diones with pyridinium salts”.

 

520.     Omer A. Akrawi, Hamid H. Mohammed, Peter Langer*, Synlett 2013, 1121-1124.

“Bromination of 1,2,3,4-Tetrahydroquinoline Revisited. The Product is 3,6,8- and not 4,6,8-Tribromoquinoline. Suzuki-Miyaura Reactions of 3,6,8-Tribromoquinoline”.

 

519.     Constantin Mamat, Peter Langer*, Monatshefte Chem. 2013, 144, 1057-1061.

“Condensation of the Dianion of Ethyl Acetoacetate with Perfluoroalkyl Iodides. Application to the Synthesis of 3-Perfluoroalkylsalicylic Acids”.

 

518.     Omer A. Akrawi, Afsar Khan, Munawar Hussain, Hamid H. Mohammed, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2013, 54, 3037-3039.

“Synthesis of 2,3-diarylfluorenones by domino ′twofold Heck / electrocyclization / dehydrogenation′ reactions of 2,3-dibromoindenone”.

 

517.     Sebastian Reimann, Muhammad Sharif, Kai Wittler, Leif R. Knöpke, Annette-E. Surkus, Christian Roth, Ralf Ludwig, Peter Langer*, Z. Naturforsch. B 2013, 68b, 367-377.

“3-Pyrenylacrylates: Synthetic, Photophysical, Theoretical and Electrochemical Investigations”.

 

516.     Jennifer Hefner, Alexander Villinger, Peter Langer*, Z. Naturforsch. B 2013, 68b, 831-835.

“Synthesis of Homophthalates by [3+3] Cyclocondensation Reactions of 1,3-Bis(silyloxy)-1,3-butadienes with Silylated Methyl 3,5-Dioxohexanoate”.

 

515.     Xiao-Feng Wu,* Muhammad Sharif, Khurram Shoaib, Helfried Neumann, Anahit Pews-Davtyan, Peter Langer, Matthias Beller*, Chem. Eur. J. 2013, 19, 6230–6233.

“A Convenient Palladium-Catalyzed Carbonylative Synthesis of 2-Amino-Benzoxazinones from 2-Bromoanilines and Isocyanates”.

 

514.     Omer A. Akrawi, Tamás Patonay, Krisztina Kónya, Peter Langer*, Synlett 2013, 24, 860-864.

“Chemoselective Suzuki-Miyaura Cross-Coupling Reactions of 6-Bromo-3-(trifluorosulfonyloxy)-flavone”.

 

513.     Peter Ehlers, Andranik Petrosyan, Jens Baumgard, Stefan Jopp, Norbert Steinfeld, Tariel V. Ghochikyan, Ashot S. Saghyan, Peter Langer*, ChemCatChem 2013, 13, 2504-2511.

“Synthesis of 2,5-Diarylpyrroles by Ligand-Free Palladium-Catalyzed CH-Activation of Pyrroles in Ionic Liquids”.

 

512.     Marcelo Vilches-Herrera, Anke Spannenberg, Peter Langer*, Viktor Iaroshenko*, Tetrahedron 2013, 69, 5955-5967.

“Novel and Efficient Synthesis of 4,7-Dihydro-1H-pyrrolo[2,3-b]pyridine Derivatives via One-Pot, Three-Component Approach from N-Substituted 5-Amino-3-cyanopyrroles, Various Carbonyl- and Active Methylene Compounds.”

 

511.     Muhammad Zahid, Viktor Iaroshenko, Ashot S. Saghyan, Christine Fischer, Peter Langer*, Tetrahedron 2013, 69, 3451-3458.

“Convenient Synthesis of Benzo[b]pyrazolo[5,1-f][1,6]naphthyridines by Silver Triflate Catalyzed Three-Component Reaction of 2-Alkynyl-3-formylquinolines, Tosylhydrazine and Carbonyl Compounds”.

 

510.     Viktor O. Iaroshenko*, Sergii Dudkin, Vyacheslav Ya. Sosnovskikh, Alexander Villinger, Peter Langer, Synthesis 2013, 45, 971-977.

“A recyclization in the series of spiro[indole-3,5'-pyrimido[4,5-b]quinoline]-2,2',4'-triones prepared by a three component reaction of isatins with (thio)barbituric acids and electron-rich anilines”.

 

509.     Willi Desens, Marleen Winterberg, Stefan Büttner, Ashot S. Saghyan, Alexander Villinger, Peter Langer*, Tetrahedron 2013, 69, 3459-3464.

“Synthesis of Pyrazoles and Dihydroisoxazoles with Fluorinated Side-Chain by Cyclization Reactions of Fluoroalkylated Triketides”.

 

508.     Franziska Bendrath, Verena Specowius, Zharylkasyn A. Abilov, Ashot S. Saghyan, Peter Langer*, Z. Naturforsch. B. 2013, 68b, 378-382.

“Regioselective Synthesis of 5-(2-Methoxyethyl)biphenyls by Formal [3+3]-Cyclocondensations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

507.     Ashot S. Saghyan*, Gnel M. Mkrtchyan, Ani S. Dadayan, Satenik G. Petrosyan, Arpine V. Geolchanyan, Hayarpi M. Simonyan, Anna F. Mkrtchyan, Satenik Mkrtchyan, Ashot Gevorgyan, Viktor O. Iaroshenko, Peter Langer*, Tetrahedron: Asymmetry 2013, 24, 229–232.

“Asymmetric synthesis of enantiomerically enriched (S)-α-aminopropionic acids containing heterocyclic side chains”.

 

506.     Viktor O. Iaroshenko,* Sajid Ali, Tarik Mahmood Babar, Muhammad Abbasi, Vyacheslav Ya. Sosnovskikh, Alexander Villinger, Peter Langer, Tetrahedron 2013, 69, 3167-3181.

“Efficient synthesis of novel thieno[3,2-b]-, [2,3-c]- and [3,2-c]pyridones by Sonogashira coupling of bromothiophenes with terminal alkynes and subsequent intramolecular C–N bond-forming reaction.”

 

505.     Viktor O. Iaroshenko,* Muhammad Zahid, Satenik Mkrtchyan, Ashot Gevorgyan, Kai Altenburger, Ingo Knepper, Alexander Villinger, Vyacheslav Ya. Sosnovskikh, Peter Langer, Tetrahedron 2013, 69, 2309-2318.

“Efficient synthesis of novel benzo[b][1,8]naphthyridin-4(1H)-ones and pyrido[2,3-b]quinoxalin-4(1H)-ones from ynones and primary amines”.

 

504.     Sebastian Reimann, Leif R. Knöpke, Anke Spannenberg, Angelika Brückner, Oliver Kühn, Peter Langer,* Ursula Bentrup*, Tetrahedron 2013, 69, 3338-3347.

“AlCl3 as mediating Reagent in formal [3+3] Cyclocondensation Reactions with 1,3-Bis(silyloxy)-1,3-butadienes”.

 

503.     Abiodun Falodun*, Nadja Engel, Udo Kragl, Barbara Nebe, Peter Langer, Pharm. Biology 2013, 51, 700-706.

“Novel anticancer alkene lactone from Persea americana”.

 

502.     Najim A. Al-Masoudi, Hamid H. Mohammed, Aws M. Mardan, Omer A. Akrawi, Christophe Pannecouque, Peter Langer*, Z. Naturforsch. B 2013, 68b, 229-238.

“Synthesis and anti-HIV of new fused chromene derivatives derived from 2-amino-4-(1-naphthyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carbonitrile”.

 

501.     Peter Ehlers, Andranik Petrosyan, Tariel V. Ghochikyan, Ashot S. Saghyan, Antje Neubauer, Stefan Lochbrunner, Peter Langer*, Synlett 2013, 24, 359-362.

“Suzuki-Miyaura Reactions of 2,7-Dichloro-1,8-naphthyridine”.

 

500.     Shahzad Ahmed, Muhammad Sharif*, Khurram Shoaib, Sebastian Reimann, Jamshed Iqbal, Anke Spannenberg, Peter Langer*, Tetrahedron Lett. 2013, 54, 1669-1672.

“Synthesis of 2,6-Diaryl-3-(trifluoromethyl)pyridines by Site-Selective Suzuki-Miyaura Reactions of 2,6-Dichloro-3-(trifluoromethyl)pyridine”.

 

499.     Abiodun Falodun,* Nadja Engel, Christina Oppermann, Iftikhar Ali, Alexander Villinger, Barbara Nebe, Udo Kragl, Peter Langer, Journal of Herbs, Spices & Medicinal Plants 2013, 19, 329-339.

“Trimethylammoniumyl - acetate monohydrate from Cola lepidota seeds: cancerostatic activity of extracts and fractions”.

 

498.     Muhammad Jamil, Muhammad Zubair,* Nasir Rasool, Komal Rizwan, Muhammad Abid Rashid, Iftikhar Hussain Bukhari, Peter Langer, Asian J. Chem. 2013, 25, 5328-5332.

“Synthesis, Characterization, Antibacterial and Urease Inhibition Studies of Some Novel Symmetrical N3,N3'-Bis(disubstituted)isophthalyl-bis(thioureas)”.

 

497.     Sebastian Reimann, Alina Bunescu, Andranik Petrosyan, Muhammad Sharif, Silke Erfle, Constantin Mamat, Tariel V. Ghochikyan, Ashot S. Saghyan, Anke Spannenberg, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2013, 96, 1955-1967.

“Regioselective Synthesis of Trichloromethyl-Substituted Salicylates and Cyclohexenones by One-Pot Cyclizations of 1,3-Bis-(trimethylsilyloxy)-1,3-butadienes”.

 

496.     Peter Ehlers, Tung T. Dang, Tamás Patonay, Alexander Villinger, Peter Langer*, Eur. J. Org. Chem. 2013, 2000-2007.

“Synthesis of Alkynylated Selenophenes by Site-Selective Sonogashira Reactions of Tetrabromoselenophene”.

 

495.     Firouz Matloubi Moghaddam,* Mostafa Kiamehr, Mohammad Reza Khodabakhshi, Marjan Jebeli Javan, Shaghayegh Fathi, Alexander Villinger, Viktor O. Iaroshenko*, Peter Langer*, Helv. Chim. Acta 2013, 96, 2103-2114.

“One-Pot Synthesis of 3,3′-Dispiropyrrolidine Oxindoles by Three Component [3+2] Cycloadditions of in situ generated Azomethine Ylides with 3-Benzylidene-indolin-2-ones”.

 

494.     Sergii Dudkin, Viktor O. Iaroshenko,* Andrei Tolmachev, Alexander Villinger, Vyacheslav Ya. Sosnovskikh, Peter Langer*, Org. Biomol. Chem. 2013, 11, 5351-5361.

“Synthesis and reactivity of 5-polyfluoroalkyl-5-deazaalloxazines”.

 

493.     Tuan T. Dang* and Peter Langer*, “Two Step Strategy for the Synthesis of Ethyl 2-Methyl-4,6-dioxotetrahydro-2H-pyran-2-carboxylate and 9-Hydroxy-6-oxaspiro[4.5]dec-8-en-7-one” in Proceedings of the International Conference on Natural Sciences (ICONS)2011, editor-in-chief: Hugo Scheer, ISBN 978-3-8440-1403-7, Shaker Verlag: Aachen, 2013, p. 279-282.

 

492.     Dennis Kleeblatt, Baraa Siyo, Martin Hein, Viktor Iaroshenko, Jamshed Iqbal, Alexander Villinger, Peter Langer,* Org. Biomol. Chem. 2013, 11, 886-895.

“Synthesis of N,N’-Diglycosylated Isoindigos”.

 

491.     Zahid Hassan, Tamás Patonay, and Peter Langer*, Synlett 2013, 24, 412-423 (account).

“Regioselective Suzuki-Miyaura Reactions of Aromatic Bis-Triflates. Electronic versus Steric Effects”.

 

490.     Friedrich Erben, Martina Wurster, Michael Lalk, Ulrike Lindequist, Marcel Sonneck, Krisztina Kónya, Tamás Patonay*, Peter Langer*, Monatshefte Chem. 2013, 144, 345-349.

“Synthesis of Novel Halogenated 2-Vinylchroman-4-ones and their Antimicrobial Activity”.

 

489.     Muhammad Zahid, Muhammad Farooq Ibad, Zharylkasyn A. Abilov, Peter Langer*, J. Fluorine Chem. 2013, 146, 80-85.

“Insertion of benzyne into fluorinated 1,3-dicarbonyl compounds”.

 

488.     Leif R. Knöpke, Sebastian Reimann, Anke Spannenberg, Peter Langer*, Angelika Brückner and Ursula Bentrup*, Monatshefte Chem. 2013, 144, 421-428.

“Titanium tetrachloride mediated cycloaddition reactions: the reaction of N-salicylideneaniline with 1-methoxy-1,3-bis(silyloxy)-1,3-butadiene”.

 

487.     Muhammad Sharif, Aneela Maalik, Sebastian Reimann, Jamshed Iqbal, Tamás Patonay, Alexander Villinger, Peter Langer*, J. Fluorine Chem. 2013, 146, 19-36.

“Synthesis of Functionalized Fluorinated Terphenyls by Site-Selective Suzuki-Miyaura Cross-Coupling Reactions of Dibrominated Fluorbenzenes”.

 

486.     Zahid Hassan, Ihsan Ullah, Rasheed Ahmad Khera, Ingo Knepper, Tamás Patonay, Alexander Villinger, Peter Langer*, Tetrahedron 2013, 69, 460-469.

“Synthesis of Tetraaryl-p-benzoquinones and 2,3-Diaryl-1,4-naphthoquinones via Suzuki-Miyaura Cross-Coupling Reactions”.

 

485.     Viktor Iaroshenko*, Dmytro Ostrovskyi, Khurshid Ayub, Alexander Villinger, Peter Langer*, Adv. Synth. Catal. 2013, 355, 576-588.

“Synthesis of 4-trifluoromethylpyridines by cyclization of 3-hydroxy-pent-4-yn-1-ones with urea”.

 

484.     Aws M. Hamdy, Nadi Eleya, Hamid H. Mohammed, Tamás Patonay, Alexander Villinger, Peter Langer*, Tetrahedron 2013, 69, 2081-2086.

“Site-Selective Suzuki-Miyaura Reactions of 2,6-Dichlorobenzoxazole”.

 

483.     Iftikhar Ali, Baraa Siyo, Zahid Hassan, Imran Malik, Ihsan Ullah, Asad Ali, Muhammad Nawaz, Jamshed Iqbal, Tamás Patonay, Alexander Villinger, Peter Langer*, J. Fluorine Chem. 2013, 145, 18-34.

“Synthesis of trifluoromethyl-substituted di- and terphenyls by site-selective Suzuki-Miyaura reactions of various dihalogenated trifluoromethyl-benzene derivatives”.

 

482.     Nadi Eleya, Tamás Patonay, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2013, 96, 408-413.

“Synthesis of Tetraarylphthalates by Suzuki-Miyaura Reactions of Dimethyl Tetrabromophthalate”.

 

481.     Friedrich Erben, Verena Specowius, János Wölfling, Gyula Schneider, Peter Langer*, Helv. Chim. Acta 2013, 96, 924-939.

“Benzo-Annulated Steroids: Synthesis of Octahydro-Indenophenanthrenes by Formal [3+3]-Cyclocondensation of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

480.     A. E. Ubhenin, A. A. Uwakwe, A. Falodun*, N. Engel, F. C. Onwuka, U. Kragl, P. Langer, Journal of Herbs, Spices & Medicinal Plants 2013, 19, 159-167.

“Anti-Proliferative and Pro-Apoptotic Effects of Methanolic Extract of Caesaipinia Bonduc and its Fractions in Estrogen-Sensitive Human Breast Adenocarcinoma Cell Line (MCF-7)”.

 

479.     Verena Specowius, Thomas Rahn, Muhammad Adeel, Stefanie Reim, Holger Feist, Ashot S. Saghyan, Peter Langer*, Monatshefte Chem. 2013, 144, 627-631.

“Synthesis of 2-chloro-3-oxoesters by reaction of the dianion of ethyl 2-chloroacetoacetate with electrophiles”.

 

478.     Muhammad Nawaz, Ihsan Ullah, Obaid-Ur-Rahman Abid, Asad Ali, Tamás Patonay, Ashot S. Saghyan, Tariel V. Ghochikyan, Alexander Villinger, Peter Langer*, Can. J. Chem. 2013, 91, 1048-1058.

“Synthesis of functionalized para- and meta-terphenyls based on site-selective Suzuki cross-coupling reactions of bis(triflates) of methyl 2,5-dihydroxybenzoate and methyl 2,4-dihydroxybenzoate”.

 

477.     Serge-Mithérand Tengho Toguem,  Imran Malik,  Munawar Hussain, Jamshed Iqbal, Alexander Villinger, Peter Langer*, Tetrahedron 2013, 69, 160-173.

“Synthesis of Functionalized Benzothiophenes and Dibenzothiophenes by Twofold Heck and subsequent 6π-Electrocyclization Reactions of 2,3-Dibromothiophenes and 2,3-Dibromobenzothiophenes”.

 

476.     Stefan Büttner, Alina Bunescu, Sebastian Reimann, T. H. Tam Dang, Thomas Pundt, Renske Klassen, Andreas Schmidt, Nazken K. Kelzhanova, Zharylkasyn A. Abilov, Tariel V. Ghochikyan, Ashot S. Saghyan, Anke Spannenberg, Helmut Reinke, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2013, 96, 44-58.

 “Regioselective [3+3] Cyclization of 1,3-Bis(silyloxy)-1,3-butadienes with 4-Silyloxy-1,1,1-trifluoroalk-3-en-2-ones. New and Convenient Synthesis of Functionalized 5-Alkyl-3-(trifluoromethyl)phenols”.

 

475.     Muhammad Sharif, Aneela Maalik, Sebastian Reimann, Jamshed Iqbal, Tamás Patonay, Alexander Villinger, Anke Spannenberg, and Peter Langer*, Tetrahedron 2013, 69, 174-183.

“Synthesis and Photophysical Properties of Tetra- and Pentaalkynyl Fluorobenzenes”.

 

474.     Muhammad Iqbal, Saqib Ali*, Niaz Muhammad, Masood Parvez, Peter Langer, Alexander Villinger, J. Organometal. Chem. 2013, 723, 214-223.

“Synthesis, characterization, crystal structures and electrochemical studies of organotin(IV) carboxylates”.

 

 

2012

 

473.     Dhafer Saber Zinad, Holger Feist, Alexander Villinger, Peter Langer*, Tetrahedron 2012, 68, 711-721.

“Suzuki-Miyaura reactions of the bis(triflates) of 1,3- and 1,4-dihydroxythioxanthone. Electronic and steric effects on the site-selectivity”.

 

472.     Tuan T. Dang, Nazken K. Kelzhanova, Zharylkasyn A. Abilov, Mirgul Zh. Turmukhanova, Peter Langer*, Synlett 2012, 23, 1283-1290 (account).

“Cyclization Reactions of 1,1-Bis(trimethylsilyloxy)ketene Acetals”.

 

471.     Zahid Hassan, Peter Langer*, Synlett 2012, 23, 2811-2813.

”Mild and Convenient Synthesis of Benzodithiazoles by Oxidative Cyclization of Bis(thiobenzanilides)”.

 

470.     Viktor O. Iaroshenko*, Iryna Savych, Alexander Villinger, Vyacheslav Ya. Sosnovskikh, Peter Langer, Org. Biomol. Chem. 2012, 10, 9344-9348.

“Reactions of 3-acylchromones with dimethyl 1,3-acetonedicarboxylate and 1,3-diphenylacetone: one-pot synthesis of functionalized 2-hydroxybenzophenones, 6H-benzo[c]chromenes and benzo[c]coumarins”.

 

469.     Ghazwan Ali Salman, Riffat Un Nisa, Viktor O. Iaroshenko, Alexander Villinger, Jamshed Iqbal, Khurshid Ayub, Peter Langer,* Org. Biomol. Chem. 2012, 10, 9464-9473.

“Pyrrole versus quinoline formation in the palladium catalyzed reaction of 2-alkynyl-3-bromothiophenes and 2-alkynyl-3-bromofurans with anilines. A combined experimental and computational study”.

 

468.     S. A. Dadayan, A. S. Dadayan, A. S. Poghosyan, A. S. Saghyan*, N. Y. Grigoryan, S. H. Mangasaryan, V. N. Khrustalev, V. I. Maleev, P. Langer, Chemical Journal of Armenia 2012, 65, 307-316.

“Novel Bromine Containing Auxiliaries and Ni(II) Complexes of their Schiff Bases with Glycine and Alanine”.

 

467.     Viktor O. Iaroshenko,* Iftikhar Ali, Satenik Mkrtchyan, Volodymyr Semeniuchenko, Dmytro Ostrovskyi, Peter Langer, Synlett 2012, 2603-2608.

“Transition Metal - Catalysed Arylation of 1-Deazapurines via C-H bond activation.”

 

466.     Viktor O. Iaroshenko,* Sajid Ali, Satenik Mkrtchyan, Ashot Gevorgyan, Tariq Mahmood Babar, Volodymyr Semeniuchenko, Zahid Hassan, Alexander Villinger, Peter Langer, Tetrahedron Lett. 2012, 53, 7135–7139. 

“Design and Synthesis of condensed Thienocoumarins by Suzuki-Miyaura reaction /Lactonization tandem Protocol”.

 

465.     Axel Schulz,* Muhammad Ibad Farooq, Alexander Villinger, Peter Langer, Fabian Reiss, J. Am. Chem. Soc. 2012, 134, 17757–17768.

“Catalytic Trimerisation of Bissilylated Diazomethane”.

 

464.     Tran Quang Hung, Tuan Thanh Dang, Alexander Villinger, Tran Van Sung, Peter Langer*, Org. Biomol. Chem. 2012, 10, 9041 - 9044.

”Efficient Synthesis of Diindolo[3,2-b:4,5-b’]thiophenes and Benzothieno[3,2-b]indoles by Pd-Catalyzed Site-Selective C-C and C-N Coupling Reactions”.

 

463.     Munawar Hussain, Tran Van Sung, Peter Langer*, Synlett 2012, 23, 2735-2745 (account).

“Domino Twofold Heck / 6π-Electrocyclization Reactions of 1,2-Dihaloalkenes”.

 

462.     Mostafa Kiamehr, Firouz Matloubi Moghaddam,* Volodymyr Semeniuchenko, Pavel V. Gormay, Alexander Villinger, Peter Langer, Viktor O. Iaroshenko,* Tetrahedron 2012, 68, 9685-9693. 

“Pyridinium Salts – Versatile Reagents for the Regioselective Synthesis of Functionalized Thiazocino[2,3-b]indoles by Tandem Dinucleophilic Reaction of Thiooxindoles.”

 

461.     Viktor O. Iaroshenko,* Satenik Mkrtchyana, Ashot Gevorgyana, Marcelo Vilches-Herrera, Dmitri V. Sevenard, Alexander Villinger, Tariel V. Ghochikyan, Ashot Saghiyan, Vyacheslav Ya. Sosnovskikh, Peter Langer,* Tetrahedron 201268, 2532-2543. 

“Synthesis of Heteroannulated 3-Nitro- and 3-Aminopyridines by Cyclocondensation of Electron-Rich Aminohetrocycles with 3-Nitro-4H-chromen-4-one.”

 

460.     Franziska Bendrath, Verena Specowius, Dirk Michalik, and Peter Langer,* Tetrahedron 2012, 68, 6456-6462.

“3,5-Dioxopimelates as New Synthetic Building Blocks. Cyclocondensation with 1,2-, 1,3- and 1,4-Dinucleophiles”.

 

459.     Ashot S. Saghyan,* Hayarpi M. Simonyan,  Lala A. Stepanyan,  Samvel G. Ghazaryan, Arpine V. Geolchanyan, Luiza L. Manasyan, Vahe T. Ghochikyan,  Tariel V. Ghochikyan,  Nelli A. Hovhannisyan, Ashot Gevorgyan, Viktor O. Iaroshenko, Peter Langer,* Tetrahedron: Asymmetry 2012, 23, 891-897.

“Asymmetric synthesis of new β-heterocyclic (S)-α-aminopropionic acids”.

 

458.     Muhammad Adeel, Fazal Elahi, M. Nawaz Tahir*, Azim Khan, Peter Langer, Acta Cryst. E 2012, E68, o2043.

“5-(4-Chlorophenyl)-2-fluoropyridine”.

 

457.     Fazal Elahi, Muhammad Adeel, M. Nawaz Tahir*, Peter Langer, Saeed Ahmad, Acta Cryst. E 2012, E68, o2070.

“5-(4-Fluorophenyl)-2-fluoropyridine”.

 

456.     Muhammad Adeel*, Peter Langer, Martin Hein and Helmut Reinke, Acta Cryst E 2012, E68, o1224.

“Methyl 4',5-dichloro-2-hydroxy-4,6-dimethylbiphenyl-3-carboxylate”.

 

455.     Viktor O. Iaroshenko*, Dmytro Ostrovskyi, Maria Milyutina, Aneela Maalik, Alexander Villinger, Andrei Tolmachev, Dmitriy M. Volochnyuk, Peter Langer, Adv. Synth. Catal. 2012, 354, 2495-2503.

“Design and Synthesis of Polycyclic Imidazole-Containing N-heterocycles based on C-H Activation / Cyclization Reactions”.

 

454.     Verena Specowius, Nasken Kelzhanova, Zharylkasyn A. Abilov, and Peter Langer*, Monatshefte Chem. 2012, 143, 1151-1156.

Regioselective Synthesis of CF2Cl-Substituted Biaryls by [3+3] Cyclocondensations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 4-Aryl-1-chloro-1,1-difluoro-4-trimethylsilyloxy-3-en-2-ones

 

453.     Omer A. Akrawi, Hamid Mohammed, Tamás Patonay, Alexander Villinger, Peter Langer*, Tetrahedron 2012, 68, 6298-6304.

“Synthesis of Arylated Xanthones by Site-Selective Suzuki-Miyaura Reactions of the Bis(triflate) of 1,3-Dihydroxyxanthone”.

 

452.     Omer Akrawi, Gergö Nagy, Tamás Patonay, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2012, 53, 3206-3209.

“Chemoselective Suzuki-Miyaura Reactions of 4-Trifluoromethylsulfonyloxy-6-bromocoumarin”.

 

451.     Iftikhar Ali, Zahid Hassan, Martin Hein, Abiodun Falodun, Tamás Patonay, Alexander Villinger, Peter Langer*, Synthesis 2012, 44, 2255-2263.

„Regioselective Pd(0)-Catalysed Cross-Coupling Reactions of 5,7-Dichloro-1,6-naphthyridine”.

 

450.     Imran Malik, Zeeshan Ahmad,  Sebastian Reimann, Muhammed Nawaz, Tamás Patonay, Peter Langer,* Synlett 2012, 1463-1466.

“Sonogashira Reactions of 2,3,4,5-Tetrabromofuran. Synthesis of 2,3,4,5-Tetraalkynylfurans, 2,3,5-Trialkynylfurans and 2,5-Dialkynylfurans”.

 

449.     Serge-Mithérand Tengho Toguem, Ingo Knepper, Peter Ehlers, Tung T. Dang, Tamás Patonay, Peter Langer*, Adv. Synth. Catal. 2012, 354, 1819-1826.

„Synthesis of Dibenzothiophenes and Carbazoles by Sequential 'Tetrafold Heck / 6π-Electrocyclization / Dehydrogenation' Reactions of Tetrabromothiophene and Tetrabromo-N-methylpyrrole”.

 

448.     Zahid Hassan, Munawar Hussain, Alexander Villinger, Peter Langer*, Tetrahedron 2012, 68, 6305-6313.

“Synthesis of Aryl-Substituted Naphthalenes by Chemoselective Suzuki-Miyaura Reactions of Bromo-trifluoromethanesulfonyloxy-naphthalenes. Influence of Steric and Electronic Parameters”.

 

447.     Sebastian Reimann, Alina Bunescu, Robert Litschko, Silke Erfle, Lutz Domke, Franziska Bendrath, Zharylkasyn A. Abilov, Anke Spannenberg, Alexander Villinger, Peter Langer*, J. Fluorine Chem. 2012, 139, 28-45.

”Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with 1-Chloro-1,1-difluoro-4,4-dimethoxybut-3-en-2-one and 1,1-Difluoro-4,4-dimethoxybut-3-en-2-one. Regioselective Synthesis of Fluorinated Salicylates and Pyran-4-ones”.

 

446.     Abiodun Falodun,* Udo Kragl, Sergé-Mithérand Tengho Toguem, Alexander Villinger, Thomas Fahrenwaldt, Peter Langer,  Nat. Prod. Commun. 2012, 7, 151-152.

“A Novel Anticancer Diterpenoid from Jatropha gossypifolia”.

 

445.     Silke Erfle, Sebastian Reimann, Alina Bunescu, Zharylkasyn A. Abilov, Anke Spannenberg, Peter Langer*, Helv. Chim Acta 2012, 95, 1037-1047.

“Regioselective Synthesis of 6-Chlorodifluorosalicylates by [3+3] Cyclocondensations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 1-Chloro-1,1-difluoro-4-trimethylsilyloxy-3-penten-2-one”.

 

444.     Viktor O. Iaroshenko,* Ingo Knepper, Muhammad Zahid, Sergei Dudkin, René Kuzora, Alexander Villinger, Peter Langer*, Org. Biomol. Chem. 2012, 10, 2955-2959.

“Efficient [5+1]-Strategy for the Assembly of 1,8-Naphthyridines by Domino Amination/Conjugate Addition Reactions of 1-(2-Chloropyridin-3-yl)prop-2-yn-1-ones with Amines”.

 

443.     Iftikhar Ali, Baraa Siyo, Yaseen Al Soud, Alexander Villinger, Peter Langer*, Synthesis 2012, 44, 1637-1646.

“Regioselective Suzuki-Miyaura Cross-Coupling Reactions of 2,6-Dichloroquinoxaline”.

 

442.     Stefan Büttner, Nazken K. Kelzhanova, Zharylkasyn A. Abilov, Alexander Villinger, Peter Langer*, Tetrahedron 2012, 68, 3654-3668.

”[3+3] Cyclizations of 1,3-Bis(silyloxy)-1,3-butadienes. Diversity-Oriented Synthesis of CF3-Substituted Fluorenes, Dibenzofurans, 9,10-Dihydrophenanthrenes and 6H-Benzo[c]chromenes”.

 

441.     Sebastian Reimann, Peter Ehlers, Muhammad Sharif, Kai Wittler, Ralf Ludwig, Anke Spannenberg, Peter Langer*, Cat. Commun. 2012, 25, 142-147.

“Site-Selective Sonogashira Reactions of 1,2-Dibromo-3,5-difluorobenzene”.

 

440.     Nadi Eleya, Zein Khaddour, Tamás Patonay, Peter Langer*, Synlett 2012, 223-226.

“Efficient Synthesis of Arylated Coumarins by Site-Selective Suzuki–Miyaura Cross-Coupling Reactions of the Bis(triflate) of 4-Methyl-5,7-dihydroxycoumarin”.

 

439.     Verena Specowius, Franziska Bendrath, Marleen Winterberg, Khurshid Ayub, Peter Langer*, Adv. Synth. Catal. 2012, 354, 1163-1169.

“Synthesis of Functionalized Indolizines by Lewis Acid Mediated Cyclocondensation of 3-(Pyridin-2-y l)-propiolates with Enones”.

> > Highlighted in Synfacts 2012, 8, 0720

 

438.     Nadi Eleya, Imran Malik, Sebastian Reimann, Kai Wittler, Martin Hein, Tamás Patonay, Alexander Villinger,  Ralf Ludwig, Peter Langer*, Eur. J. Org. Chem. 2012, 1639–1652.

“Efficient Synthesis of Arylated Flavones by Site-Selective Suzuki–Miyaura Cross-Coupling Reactions of the Bis(triflate) of 5,7- and 7,8-Dihydroxyflavone”.

 

437.     Viktor O. Iaroshenko,* Satenik Mkrtchyan, Ashot Gevorgyan, Mariia Miliutina, Vyacheslav Sosnovskikh, Dmitro Voluchnyuk, Alexander Villinger, Peter Langer,* Org. Biomol. Chem. 2012, 10, 890–894.

„2,3-Unsubstituted chromones and their enaminone precursors as versatile reagents for the synthesis of fused pyridines”.

 

436.     Viktor O. Iaroshenko,* Muhammad S. A. Abbasi, Alexander Villinger, Peter Langer*, Adv. Synth. Catal. 2012, 354, 803-806.

“One-Pot Synthesis of Biaryl Lactones by Sonogashira Cross-Coupling Reactions of 4-Chloro-3-formylcoumarine and Subsequent Domino [5+1] Cyclization / Deacetylation Reactions with 1,3-Dicarbonyl Compounds”.

> > Highlighted in Synfacts 2012, 8, 0603

 

435.     Gnuni Karapetyan, Tuan T. Dang, Muhammad Sher, Tariel V. Ghochikyan, Ashot Saghyan, Peter Langer*, Curr. Org. Chem. 2012, 16, 557-565.

“Diversity-Oriented Synthesis of Functionalized Phenols by Regioselective [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with 3-Alkoxy-2-en-1-ones and Related Substrate”.

 

434.     Zahid Hassan, Alexander Villinger, Sebastian Reimann, Kai Wittler, Ralf Ludwig, Alexander Villinger, Peter Langer*, Adv. Synth. Catal. 2012, 354, 731–739.

“Cyclization of 1,4-Phenylenediacrylic Acid with Thionyl Chloride and Subsequent Suzuki-Miyaura Reactions Revisited. The Products are Benzo[1,2-b;5,6-b']dithiophenes and not Benzo[1,2-b;4,5-b']dithiophenes”.

 

433.     Rasheed Ahmad Khera, Munawar Hussain, Nguyen Thai Hung, Nadi Eleya, Holger Feist, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2012, 95, 469-482.

“Regioselective Arylation and Alkynylation of 2,3-Dibromoindenones by Suzuki-Miyaura and Sonogashira Cross-Coupling Reactions”.

 

432.     Simone Ladzik, Mathias Lubbe, Nazken K. Kelzhanova, Zharylkasyn A. Abilov, Holger Feist, Peter Langer*, J. Fluorine Chem. 2012, 136, 38-42.

“Regioselective Synthesis of 5-Ethoxycarbonyl-, 5-Acetyl- and 5-Trifluoroacetyl-6-trifluorosalicylates by One-Pot Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-buta-dienes with 3-Alkoxy-2-alken-1-ones“.

 

431.     Sebastian Reimann, Muhammad Sharif, Martin Hein, Alexander Villinger, Kai Wittler, Ralf Ludwig, Peter Langer*, Eur. J. Org. Chem. 2012, 604-615.

“Site-Selective Sonogashira Reactions of 1,4-Dibromo-2-fluorobenzene. Synthesis and Properties of Fluorinated Alkynylbenzenes”.

 

430.     Rasheed Ahmad Khera, Asad Ali, Munawar Hussain, Muhammad Farooq Ibad, Alexander Villinger, Peter Langer*, ChemCatChem 2012, 356-362.

“Site-Selective Suzuki-Miyaura and Sonogashira Cross Coupling Reactions of the Bis(triflate) of 2,4′-Bis(hydroxy)diphenylsulfone“.

 

429.     Rasheed Ahmed Khera, Muhammad Nawaz, Holger Feist, Alexander Villinger, and Peter Langer*, Synthesis 2012, 44, 219-234.

“Synthesis of functionalized 3,4- and 2,4-diarylbenzophenones by site-selective Suzuki and Sonogashira cross-coupling reactions of bis(triflates) of 3,4- and 2,4-dihydroxybenzophenone”.

 

 

2011

 

428.     Muhammad Farooq Ibad, Peter Langer, Axel Schulz,* Alexander Villinger, J. Am. Chem. Soc. 2011, 133, 21016–21027.

“Silylium-Arene Adducts: An Experimental and Theoretical Study”.

 

427.    Viktor O. Iaroshenko,* Friedrich Erben, Satenik Mkrtchyan, Ani Hakobyan, Marcelo Vilches-Herrera, Sergii Dudkin, Alina Bunescu, Alexander Villinger, Vyacheslav Ya. Sosnovskikh, Peter Langer* Tetrahedron 2011, 67, 7946-7955.

“4-Chloro-3-(trifluoroacetyl)- and 4-chloro-3-(methoxalyl)coumarins as novel and efficient building blocks for the regioselective synthesis of 3,4-fused coumarins”.

 

426.    Muhammad Adeel,* Peter Langer, Alexander Villinger, Acta Cryst. 2011, E67, o2336.

“Ethyl 4-chloro-2’-fluoro-3-hydroxy-5-methylbiphenyl-2-carboxylate“.

 

425.    Silke Erfle, Thomas Rahn, Franziska Bendrath, Wolfgang Baumann, Dirk Michalik, Haijun Jiao, Anke Spannenberg, Armin Börner, Peter Langer*, Tetrahedron 2011, 67, 8780-8789.

“Synthesis and Characterization of Peralkylated 1,3,5-Tri- and 1,3,5,7-Tetracarbonyl Compounds”.

 

424.    Viktor O. Iaroshenko,* Aneela Maalik, Dmytro Ostrovskyi, Alexander Villinger, Peter Langer*, Tetrahedron 2011, 67, 8321-8330.

”Efficient Synthesis of Purines by Inverse Electron Demand Diels-Alder Reactions of 1-Substituted-1H-Imidazol-5-amines with 1,3,5-Triazines”.

 

423.    Viktor O. Iaroshenko,* Muhammad S. A. Abbasi,  Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2011, 52, 5910-5912.

“Synthesis of 6H-Benzo[c]chromen-6-ones by Cyclocondensation of 1,3-Dicarbonyl Compounds with       4-Chloro-3-formylcoumarine”.

 

422.    Tuan T. Dang, Tung T. Dang, Peter Langer,* Synlett 2011, 2633-2342 (account).

“Synthesis of Functionalized Heterocycles by Cyclization Reactions of Oxime and Hydrazone 1,4-Dianions”.

 

421.    Viktor O. Iaroshenko,* Alina Bunescu, Linda Supe, Maria Milyutina, Anke Spannenberg, Peter Langer*, Org. Biomol. Chem. 2011, 9, 7554-7558.

“3-Methoxalylchromones – Versatile Reagents for the Regioselective Synthesis of Functionalized Benzophenones, Potent UV-Filters”

 

420.    Muhammad Nawaz, Ihsan Ullah, Obaid-Ur-Rahman Abid, Alexander Villinger, Peter Langer*, Eur. J. Org. Chem. 2011, 6670–6684.

“Synthesis of 2′,4-Diarylbenzophenones by Site-Selective Suzuki-Miyaura Reactions of the Bis(triflates) of 2′,4-Dihydroxybenzophenones”.

 

419.    Stefan Büttner, Willi Desens, Dirk Michalik,* and Peter Langer,* Eur. J. Org. Chem. 2011, 6663–6669.

“Synthesis and Structure of Fluoroalkylated Triketides”.

 

418.    Muhammad Sharif, Sebastian Reimann, Kai Wittler, Leif R. Knöpke, Annette-E. Surkus, Christian Roth, Alexander Villinger, Ralf Ludwig,* Peter Langer*, Eur. J. Org. Chem. 2011, 5261-5271.

“1-(Arylalkenyl)pyrenes: Synthesis, Structure, Photophysical, Theoretical and Electrochemical Investigations”.

 

417.    Leif R. Knöpke, Sebastian Reimann, Anke Spannenberg, Peter Langer*, Angelika Brückner, Ursula Bentrup*, ChemCatChem. 2011, 3, 1459–1468.

“Elucidating the directing effect of Lewis acid on the reaction pathway in formal [3+3] cyclocondensation reactions: A comprehensive in situ spectroscopic study”.

 

416.    Nadi Eleya, Ahmed Mahal, Alexander Villinger, Peter Langer*, Adv. Synth. Catal. 2011, 353, 2761–2774.

“Synthesis of Arylated Quinolines by Chemo- and Site-selective Suzuki-Miyaura Reactions of 5,7-Dibromo-8-(trifluoromethylsulfonyloxy)quinoline”.

 

415.    Vahuni Karapetyan, Satenik Mkrtchyan, Gnuni Karapetyan, Alexander Villinger, Ashot Saghiyan, Tariel V. Ghochikyan, Peter Langer*, Helv. Chim. Acta 2011, 94, 2045–2053.

“Efficient Synthesis of 6-(2-Aminophenyl)-2,3-dihydro-1H-pyridin-4-ones based on a Cyclization / Ring Cleavage Strategy”.

 

414.    Mohanad Shkoor, Olumide Fatunsin, Abdolmajid Riahi, Peter Langer*, Phosphorus, Sulfur, Silicon & Related Elem. 2011, 186, 1997-2005.

“Synthesis of 2-Hydroxy-5-arylselanyl-benzoates by [3+3] Cyclocondensation of 1,3-Bis(silyloxy)-1,3-butadienes with 2-Arylseleno-3-silyloxy-alk-2-en-1-ones”.

 

413.    Ghazwan Ali Salman, Asad Ali, Munawar Hussain, Rasheed Ahmad Khera, Peter Langer*, Synthesis 2011, 2208-2214.

“Synthesis of Functionalized Benzofurans by Double Heck Reactions of 2,3-Dibromofurans and subsequent 6p-Electrocyclization / Dehydrogenation”.

 

412.    Ihsan Ullah, Muhammad Nawaz, Alexander Villinger, Peter Langer*, Synlett 2011, 1895-1899.

“Synthesis of Trifluoromethyl-Substituted Di- and Terphenyls by Site-Selective Suzuki-Miyaura Reactions of 1,4-Dibromo-2-trifluoromethyl-benzene”.

 

411.    Satenik Mkrtchyan, Zorik Chilingaryan, Gagik Ghazaryan, Rüdiger Dede, Nasir Rasool, Muhammad A. Rashid, Helmar Görls, Alexander Villinger, Gnuni Karapetyan, Tariel V. Ghochikyan, Ashot Saghiyan, Peter Langer,* Synthesis 2011, 2281-2290.

E/Z-Diastereoselective Synthesis of Alkylidene-3-oxo-3H-isobenzofurans by Reaction of Silyl Enol Ethers with Phthaloyl Chloride“.

 

410.    Serge-Mithérand Tengho Toguem, Olumide Fatunsin, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2011, 52, 3732-3735.

“Site-Selective Suzuki-Miyaura Reactions of 2,3,5-Tribromo-N-methylpyrrole“.

 

409.    Munawar Hussain, Serge-Mithérand Tengho Toguem, Rasheed Ahmad, Dang Thanh Tung, Ingo Knepper, Alexander Villinger, Peter Langer*, Tetrahedron 2011, 67, 5304-5318.

“Synthesis of Carbazoles and 1,2-Dihydrocarbazoles by Domino ¢Twofold Heck / 6p-Electrocyclization¢ Reactions of Di-, Tri- and Tetrabromoindoles”.

 

408.    Zahid Hassan, Munawar Hussain, Peter Langer*, Synlett 2011, 1827-1830.

“Synthesis of 1,2-Diarylnaphthalenes by Chemoselective Suzuki-Miyaura Reactions of 2-Bromo-1-(trifluoromethanesulfonyloxy)naphthalene“.

 

407.    Viktor O. Iaroshenko,* Verena Specowius, Katharina Vlach, Marcelo Vilches-Herrera, Dmitryi Ostrovsky, Satenik Mkrtchyan, Alexander Villinger, Peter Langer,* Tetrahedron 2011, 67, 5663-5677.

“A General Strategy for the Difluoromethylene-Containing Pyrazoles, Pyridines, and Pyrimidines”.

 

406.    Thomas Rahn, Franziska Bendrath, Martin Hein, Wolfgang Baumann, Haijun Jiao, Armin Börner, Alexander Villinger, and Peter Langer*, Org. Biomol. Chem. 2011, 9, 5172-5184.

“Synthesis and characterization of bis-cyclopropanated 1,3,5-tricarbonyl compounds. A combined synthetic, spectroscopic and theoretical study“.

 

405.    Viktor O. Iaroshenko,* Alina Bunescu, Lutz Domke, Anke Spannenberg, Dmitri Sevenard, Alexander Villinger, Vyacheslav Ya. Sosnovskikh, Peter Langer,* J. Fluorine Chem. 2011, 132, 441-449.

“Synthesis of Trifluoromethyl-Substituted Salicylates by Cyclocondensation of 1,3-Bis(silyloxy)-1,3-butadienes with 4,4-Dimethylthio-1,1,1-trifluorobut-3-en-2-one“.

 

404.    Dhafer Saber Zinad, Munawar Hussain, Omer Adeeb Akrawi, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2011, 52, 3451-3454.

“Site-Selective Suzuki-Miyaura Reactions of the Bis(triflate) of 1,3-Dihydroxythioxanthone”.

 

403.    Dhafer Saber Zinad, Munawar Hussain, Alexander Villinger, Peter Langer*, Eur. J. Org. Chem. 2011, 4212–4221.

“Site-selective Synthesis of Arylated Indenones by Suzuki-Miyaura Cross-Coupling Reactions of 2,3,5-Tribromoinden-1-one”.

 

402.    Rasheed Ahmad Khera, Asad Ali, Hummera Rafique, Munawar Hussain, Jovana Tatar, Naeem Abbas, Aamer Saeed, Alexander Villinger, Peter Langer*, Tetrahedron 2011, 67, 5244-5253.

“Synthesis of Arylated Pyrazoles by Site-Selective Suzuki-Miyaura Reactions of Tribromopyrazoles”.

 

401.    Silke Erfle, Stefanie Reim, Dirk Michalik,* Haijun Jiao, Peter Langer*, Eur. J. Org. Chem. 2011, 4367-4372.

“Experimental and Theoretical Study of the Keto-Enol Tautomerization of 3,5-Dioxopimelates. II“

 

400.    Viktor O. Iaroshenko*, Alina Bunescu, Anke Spannenberg, Peter Langer*, Chem. Eur. J. 2011, 17, 7188-7192.

“Reaction of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 2,4,6-Tris(trifluoromethyl)-1,3,5-triazine – Planning and Serendipity“.

 

399.    Ingo Knepper, Viktor O. Iaroshenko,* Marcelo Vilches-Herrera, Lutz Domke, Satenik Mkrtchyan,  Muhammad Zahid, Alexander Villinger, Peter Langer*, Tetrahedron 2011, 67, 5293-5303.

“3-Acylindoles as versatile Reagents for Pyridine Ring Annulation: Synthesis of 1-Desazapurine Isosteres”.

 

398.    Viktor O. Iaroshenko,* Dmytro Ostrovskyi, Satenik Mkrtchyan, Alexander Villinger, Peter Langer*, J. Org. Chem. 2011, 76, 2899-2903.

“Synthesis of fluorinated Purine and 1-Deazopurine Glycosides as a Platform for the Mechanism-Based Design of Adenosine Deaminase and Inosine 5’-Monophosphate Dehydrogenase Inhibitors“.

 

397.    Muhammad  Farooq Ibad, Nadi Eleya, Obaid-Ur-Rahman Abid, Ahmed Mahal, Munawar Hussain, Alexander Villinger, Peter Langer,* Synthesis 2011, 2101-2116.

“Site-Selective Suzuki-Miyaura Reactions of 1,4- and 3,5-Bis(trifluoromethyl-sulfonyloxy)-2-naphthoates”.

 

396.    Peter Ehlers, Antje Neubauer, Stefan Lochbrunner,  Alexander Villinger and Peter Langer*, Org. Lett. 2011, 13, 1618-1621.

“Synthesis and Photophysical Properties of Pentaalkynylpyridines and Penta- and Hexaalkynylbenzenes“.

 

395.    Ihsan Ullah, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2011, 52, 1888-1890.

”Synthesis of 8,9-Disubstituted Fluoranthenes by Domino Twofold Heck / Electrocyclization / Dehydrogenation of 1,2-Dibromoacenaphthene”.

 

394.    Imran Malik, Zeeshan Ahmed, Sebastian Reimann, Iftikhar Ali, Alexander Villinger, Peter Langer*, Eur. J. Org. Chem. 2011, 2088-2093.

”Synthesis and Photophysical Properties of Alkynylated Pyrimidines by Site-Selective Sonogashira Reactions of 2,4,5,6-Tetrachloropyrimidine. First Synthesis of Tetraalkynyl-pyrimidines”.

 

393.    Omer A. Akrawi, Munawar Hussain, Peter Langer*, Tetrahedron Lett. 2011, 52, 1093-1095.

“Site-Selective Suzuki-Miyaura Reactions of the Bis(triflate) of 1,3-Dihydroxyanthraquinone”.

 

392.    Ahmed Mahal, Alexander Villinger, Peter Langer*, Eur. J. Org. Chem. 2011, 2075-2087.

“Site-Selective Arylation of Alizarin and Purpurin based on Suzuki-Miyaura Cross-Coupling Reactions”.

 

391.    Franziska Bendrath, Alexander Villinger, Peter Langer*, J. Organomet. Chem. 2011, 696, 1388-1393.

“Regioselective Synthesis of Functionalized Ferrocenylphenols based on Cyclocondensation Reactions of Free and Masked 1,3-Dicarbonyl Dianions”.

 

390.    Serge-Mithérand Tengho Toguem, Peter Langer*, Synlett 2011, 513-516.

“Synthesis of 2,5,6-Trisubstituted N-Methylindoles based on Site Selective Suzuki-Miyaura Cross-Coupling, Twofold Heck and 6p-Electrocyclization / Dehydrogenation Reactions of 2,3,5-Tribromo-N-methylpyrrole”.

 

389.    Viktor O. Iaroshenko,* Satenik Mkrtchyan, Gagik Ghazaryan, Ani Hakobyan, Aneela Maalik, Linda Supe, Alexander Villinger, Andrei Tolmachev, Dmitro Ostrovskyi, Vyacheslav Ya. Sosnovskikh, Tariel V. Ghochikyan, Peter Langer*, Synthesis 2011, 469-479.

“3-(Dichloroacetyl)chromone - A New Building Block for the Synthesis of Formylated Purine Isosteres. Design and Synthesis of Fused  a-(Formyl)pyridines”.

 

388.    Ghazwan A. Salman, Munawar Hussain, Viktor O. Iaroshenko, Alexander Villinger, Peter Langer*, Adv. Synth. Catal. 2011, 353, 331-336.

“Domino C-N coupling / annulation versus C-N coupling / hydroamination of 2-alkynyl-3-bromobenzothiophenes and 2-alkynyl-3-bromothiophenes. Highly efficient synthesis of benzothieno[3,2-b]quinolines and thieno[3,2-b]pyrroles“.

 

387.    Ghazwan A. Salman, Ahmed Mahal, Mohanad Shkoor, Munawar Hussain, Alexander Villinger,  Peter Langer*, Tetrahedron Lett. 2011, 52, 392-394.

“Regioselective Suzuki-Miyaura Reactions of the Bis(triflate) of 1,2,3,4-Tetrahydro-9,10-dihydroxyanthracen-1-one”.

 

386.    Munawar Hussain, Nguyen Thai Hung, Rasheed Ahmed Khera, Alexander Villinger, and Peter Langer*, Tetrahedron Lett. 2011, 52, 184-187.

“Site-Selective Suzuki-Miyaura Reactions of 1,2-Dibromo-1H-inden-1-one“.

 

385.    Dmytro Ostrovskyi, Viktor O. Iaroshenko,* Iftikhar Ali, Satenik Mkrtchyan, Alexander Villinger, Andrei Tolmachev, Peter Langer*, Synthesis 2011, 133-141.

“3-Methoxalylchromone – a Versatile Reagent for the Regioselective 1-Desazapurine Synthesis”.

 

384.    A. Berger, S. A. Quast, M. Plötz, M. Hein, M. Kunz, P. Langer, J. Eberle,* Biochem. Pharmacol. 2011, 81, 71-81.

“Sensitization of melanoma cells for death ligand-induced apoptosis by an indirubin derivative - enhancement of both extrinsic and intrinsic apoptosis pathways.”

 

383.    Viktor O. Iaroshenko,* Sajid Ali, Tariq Mahmood Babar, Sergii Dudkin, Satenik Mkrtchyan, Nasim Hasan Rama, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2011, 52, 373-376.

“4-Chloro-3-(trifluoroacetyl)coumarin as a novel building block for the synthesis of 7-(trifluoromethyl)-6H-chromeno[4,3-b]quinolin-6-ones”.

 

382.    Obaid-ur-Rahman Abid, Muhammad Farooq Ibad, Muhammad Nawaz, Rasheed Ahmad Khera, Viktor Iaroshenko, Peter Langer,* Org. Biomol. Chem. 2011, 9, 2185-2192.

“Synthesis of Functionalized Arylpyridines and -pyrimidines by Domino [4+2] / Retro [4+2] Cycloadditions of Electron-Rich Dienes with Alkynylpyridines and –pyrimidines”.

 

381.    Munawar Hussain, Rasheed Ahmad Khera, Nguyen Thai Hung, Peter Langer*, Org. Biomol. Chem. 2011, 9, 370-373.

“Site-Selective Suzuki-Miyaura Cross-Coupling Reactions of 2,3,4,5-Tetrabromofuran”.

 

380.    Gnuni Karapetyan, Kuheli Chakrabarty, Martin Hein, Peter Langer*, ChemMedChem 2011, 6, 25-37.

“Synthesis and bioactivity of carbohydrate derivatives of indigo, its isomers and heteroanalogues”.

 

 

2010

 

379.    Ghazwan Ali Salman, Munawar Hussain, Alexander Villinger, Peter Langer*, Synlett 2010, 3031-3034.

“Site-selective Suzuki-Miyaura Reactions of the Bis(triflate) of 5,10-Dihydroxy-11H-benzo[b]fluoren-11-one”.

 

378.    Muhammad Farooq Ibad, Obaid-ur-Rahman Abid, Muhammad Adeel, Muhammad Nawaz, Verena Wolf, Alexander Villinger, Peter Langer*, J. Org. Chem. 2010, 75, 8315-8318.

“Synthesis of Highly Functionalized Biaryls by Condensation of 2-Fluoro-1,3-bis(silyloxy)-1,3-dienes with 3-Cyanochromones and Subsequent Domino ¢Retro-Michael / Aldol / Fragmentation¢”.

 

377.    Satenik Mkrtchyan, Viktor O. Iaroshenko,* Sergii Dudkin, Ashot Gevorgyan, Marcelo Vilches-Herrera, Gagik Ghazaryan, Dmitriy M. Volochnyuk, Dmytro Ostrovskyi, Zeeshan Ahmed, Alexander Villinger, Vyacheslav Ya. Sosnovskikh, Peter Langer*, Org. Biomol. Chem. 2010, 8, 5280-5284.

“3-Methoxalylchromone – A Novel Versatile Reagent for the Regioselective Purine Isostere Synthesis”.

 

376.    Dmytro Ostrovskyi, Viktor O. Iaroshenko,* Andranik Petrosyan, Sergii Dudkin, Iftikhar Ali, Alexander Villinger, Andrei Tolmachev, Peter Langer*, Synlett 2010, 2299-2303.

“An Efficient Synthesis of 6-Nitro- and 6-Amino-3H-imidazo[4,5-b]pyridines by Cyclocondensation of 1-Alkyl-1H-imidazol-5-amines with 3-Nitro-4H-chromen-4-one”.

 

375.    Vyacheslav Ya. Sosnovskikh,* Dmitri V. Sevenard, Vladimir S. Moshkin, Viktor O. Iaroshenko, Peter Langer, Tetrahedron 2010, 66, 7322-7328.

“Reaction of 3-formyl- and 3-cyanothiochromones with N- and C-nucleophiles. Novel synthesis of 3-substituted 2-aminothiochromones”.

 

374.    Imran Malik, Munawar Hussain, Nguyen Thai Hung, Alexander Villinger, Peter Langer*, Synlett 2010, 2244-2246.

“Synthesis of 7,8-Diarylflavones by Site-Selective Suzuki-Miyaura Reactions”.

 

373.    Matthias Lau, Muhammad Sher, Alexander Villinger, Christine Fischer, Peter Langer*, Eur. J. Org. Chem. 2010, 5118-5127.

Synthesis of 9-Aryl-9,10-­dihydrophenanthrenes by Domino ′[3+3] Annulation / Ring-Opening / Friedel-Crafts Alkylation′ Reactions of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 3-Aroyl-5-aryl-4,5-dihydrofurans“.

 

372.    Muhammad Zeeshan, Viktor O. Iaroshenko,* Sergii Dudkin, Dmitriy M. Volochnyuk, Peter Langer*, Tetrahedron Lett. 2010, 51, 3897-3898.

“Synthesis of Chromeno[3,4-b]pyrrol-4(3H)-ones by Cyclocondensation of 1,3-Dicarbonyl Compounds with 4-Chloro-3-nitrocoumarine“.

 

371.    Inam Iqbal, Muhammad Imran, Peter Langer*, Helv. Chim. Acta 2010, 93, 1779-1784.

“Synthesis of 2-Arylthio-5-arylselanyl-benzoates by [3+3] Cyclocondensation of 3-Arylthio-1-silyloxy-1,3-butadienes with 2-Arylseleno-3-silyloxy-alk-2-en-1-ones”.          

 

370.    Asad Ali, Munawar Hussain, Imran Malik, Christine Fischer, Peter Langer*, Helv. Chim. Acta 2010, 93, 1764-1772.

“First double Heck cross-coupling reactions of dibrominated pyridines“.

 

369.    Olumide Fatunsin, Mohanad Shkoor, Sergé-Mithérand Tengho Toguem, Abdolmajid Riahi, Olapeju O. Aiyelaagbe, Emmanuel T. Akintayo, Christine Fischer, Peter Langer*, Synlett 2010, 1963-1965.

“Regioselective Synthesis of 5-Chlorosalicylates by One-Pot Cyclization of 1,3-Bis-(trimethylsilyloxy)-1,3-butadienes with 2-Chloro-3-ethoxy-2-alken-1-ones”.

 

368.    Rasheed Ahmad Khera, Asad Ali, Munawar Hussain, Jovana Tatar, Alexander Villinger, Peter Langer*, Synlett 2010, 1923-1926.

“Synthesis of Arylated Pyrazoles by Site-Selective Suzuki-Miyaura Reactions of Tribromopyrazoles”.

 

367.    Olumide Fatunsin, Mohanad Shkoor, Abdolmajid Riahi, Peter Langer*, Synlett 2010, 1525-1527.

“Regioselective Synthesis of Highly Functionalized Arylphosphonates by Cyclocondensation of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 3-Ethoxy-2-phosphonyl-alk-2-en-1-ones

 

366.    Viktor O. Iaroshenko*, Satenik Mkrtchyan, Dmitriy M. Volochnyuk, Peter Langer*, Vyacheslav Ya. Sosnovskikh*, Dmytro Ostrovskyi, Sergii Dudkin, Anton V. Kotljarov, Mariia Miliutina, Iryna Savych, Andrei A. Tolmachev,  Synthesis 2010, 2749-2758.

“3-Formylchromones, Chalkon and Acylpyruvates as valuable Substrates for 1-Desazopurine Isosteres Synthesis”.

           

365.    Rasheed Ahmad Khera, Munawar Hussain, Rasheed Ahmad, Aamer Saeed, Alexander Villinger, Christine Fischer, Peter Langer*, J. Fluorine Chem. 2010, 131, 892-897.

“Synthesis of Fluorinated 2,3-Dihydro-4H-pyran-4-ones by Cyclocondensation of 1,3-Dicarbonyl Dianions with Aldehydes”.

 

364.    Stefan Büttner, Franziska Bendrath, Peter Langer*, Tetrahedron Lett. 2010, 51, 5106-5108.

“Synthesis and Reactions of the First Fluoroalkylated 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

363.    Muhammad Nawaz, Muhammad Sher, Peter Langer*, Synlett 2010, 2383-2391.

“Synthesis of Organosulfur Compounds based on Cyclocondensation Reactions of 3-Arylthio-1-silyloxy-1,3-butadienes and 1,3-Bis(silyloxy)-1,3-butadienes” (account).

 

362.    Olumide Fatunsin, Viktor O. Iaroshenko,* Sergii Dudkin, Satenik Mkrtchyan, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2010, 51, 4693-4695.

“Regioselective Synthesis of Benzo[c]chromen-6-ones by One-Pot Cyclocondensation of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 4-Chloro-2-oxo-2H-chromene-3-carbaldehyde“.

 

361.    Peter Ehlers, Sebastian Reimann, Silke Erfle, Alexander Villinger, Peter Langer*, Synlett 2010, 1528-1532.

”Synthesis of 2-Aryl-3,4,5,6-tetrachloropyridines and 2,6-Diaryl-3,4,5-trichloropyridines by Site-Selective Suzuki-Miyaura Reactions of Pentachloropyridine”.

 

360.    Munawar Hussain, Nguyen Thai Hung, Rasheed Ahmad Khera, Imran Malik, Dhafer Saber Zinad, Peter Langer*, Adv. Synth. Catal. 2010, 352, 1429-1435.

“Synthesis of Aryl-Substituted Pyrimidines by Site-Selective Suzuki-Miyura Cross-Coupling Reactions of 2,4,5,6-Tetrachloropyrimidines”.

 

359.    Olumide Fatunsin, Viktor O. Iaroshenko,* Sergii Dudkin, Mohanad Shkoor, Dmitro Volochnyuk, Ashot Gevorgyan, Peter Langer*, Synlett 2010, 1533-1535.

“Efficient Synthesis of Chromeno[3,4-b]pyrrol-4(3H)-ones by Cyclocondensation of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 4-Chloro-3-nitrocoumarine”.

 

358.    Matthias Lau, Muhammad Sher, Alexander Villinger, Christine Fischer, Peter Langer*, Eur. J. Org. Chem. 2010, 3743-3753.

“Domino [3+3] Annulation / Ring-Cleavage Reactions of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 5-Aryl- and 5-Vinyl-3-acyl-4,5-dihydrofurans. Efficient Synthesis of 5-(4-Chlorobut-2-en-1-yl)- and 5-(2-Aryl-2-chloroethyl)-salicylates”.

 

357.    Muhammad Sharif, Muhammad Zeeshan, Sebastian Reimann, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2010, 51, 2810-2812.  

“One-Pot Synthesis of Fluorinated Terphenyls by Site-Selective Suzuki-Miyaura Reactions of 1,4-Dibromo-2-fluorobenzene”.

 

356.    Serge-Mithérand Tengho Toguem, Peter Langer*, Synlett 2010, 1779-1782.

”Synthesis of 2,5,6-Trisubstituted Benzimidazoles by Heck and subsequent 6p-Electrocyclization / Dehydrogenation Reactions of 2,4,5-Tribromo-N-methylimidazole and 2-Aryl-4,5-dibromo-N-methyl-imidazoles”.

 

355.    Ahmed Mahal, Alexander Villinger, Peter Langer*, Synlett 2010, 1085-1088.

“Synthesis of 1,2-Diaryl-anthraquinones by Site-Selective Suzuki-Miyaura Reactions of the Bis(triflate) of Alizarin”.

 

354.    Rasheed Ahmad Khera, Rasheed Ahmad, Ihsan Ullah, Obaid-Ur-Rahman Abid, Olumide Fatunsin, Muhammad Sher, Alexander Villinger, Peter Langer*, Helv. Chim. Acta 2010, 93, 1705-1715.

“Cyclization versus Elimination Reactions of 5-Aryl-5-hydroxy-1,3-diones. One-pot Synthesis of 6-Aryl-2,3-dihydro-4H-pyran-4-ones”.

 

353.    J. Eberle, B. Spangler, J. Becker J, S. H. Heinemann, C. A. Klein, M. Kunz, S. Kuphal, P. Langer, C. Mauch, S. Meierjohann, A. Paschen, D. Schadendorf, M. Schartl, B. Schittek, R. Schoenherr, T. Tueting, P. Zigrino, A. K. Bosserhoff, Pigment Cell  Melanoma Res. 2010, 23, 296-298.

“Multicentre study on standardisation of melanoma cell culture – an initiative of the German Melanoma Research Network”.

 

352.    Nguyen Thai Hung, Munawar Hussain, Imran Malik, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2010, 51, 2420-2422.

“Site-Selective Suzuki Cross-Coupling Reactions of 2,3-Dibromobenzofuran”.

 

351.    Mohanad Shkoor, Abdolmajid Riahi, Olumide Fatunsin, Mathias Lubbe, Stefanie Reim, Muhammad Sher, Christine Fischer, and Peter Langer*, Eur. J. Org. Chem. 2010, 3732-3742.

“Competing regiodirecting effects of ester and aryl groups in [3+3] cyclocondensations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes. Regioselective synthesis of 1-hydroxyphthalates and 2-hydroxy-terphthalates”. 

 

350.    Olumide Fatunsin,  Mohanad Shkoor, Abdolmajid Riahi, Munawar Hussain, Muhammad Sher, Alexander Villinger, Christine Fischer, Peter Langer*, Helv. Chim. Acta 2010, 93, 1610-1621.

“Regioselective Synthesis of 5-Arylthio- and 5-Benzylthio-6-phenylsalicylates by One-Pot Cyclizations of 1,3-Bis(silyloxy)-1,3-butadienes with 2-Arylthio- and 5-Benzylthio-3-ethoxy-2-en-1-ones”.

 

349.    Muhammad Sharif, Sebastian Reimann, Alexander Villinger, Peter Langer*, Synlett 2010, 913-916.

”One-Pot Synthesis of Difluorinated ortho-Terphenyls by Site-Selective Suzuki-Miyaura Reactions of 1,2-Dibromo-3,5-difluorobenzene”.

 

348.    Ihsan Ullah, Muhammad Sher, Asad Ali, Rasheed Ahmad Khera, Muhammad Nawaz, Mohanad Shkoor, Inam Iqbal, Muhammad Imran, Alexander Villinger, Christine Fischer, Peter Langer*, Tetrahedron 2010, 66, 3824-3835.

“Synthesis of Sterically Encumbered Biaryls based on a ′Copper(I)-Catalyzed Arylation / [3+3] Cyclocondensation′ Strategy”.

           

347.    Manfred Kunz, Katrin M. Driller, Martin Hein, Stephanie Libnow, Ina Hohensee, Robert Ramer, Burkhard Hinz, Anja Berger, Jürgen Eberle, Peter Langer,* ChemMedChem 2010, 5, 534-539.

“Synthesis of thia-analogous indirubin-N-glycosides and their influence on melanoma cell growth and apoptosis”.

 

346.    Obaid-Ur-Rahman Abid, Muhammad  Farooq Ibad, Muhammad Nawaz, Muhammad Sher, Nasim Hasan Rama, Alexander Villinger,  and Peter Langer*, Tetrahedron Lett. 2010, 51, 1541-1544.

Synthesis of 1,4-Diaryl-2-naphthoates by Site-Selective Suzuki-Miyaura Reactions”.

 

345.    Serge-Mithérand Tengho Toguem, Alexander Villinger, Peter Langer*, Synlett 2010, 909-912.

“Site-Selective Suzuki-Miyaura Reactions of 2,3,4-Tribromothiophene”.

 

344.    Muhammad Nawaz, Rasheed Ahmad Khera, Imran Malik, Muhammad Farooq Ibad, Obaid-Ur-Rahman Abid, Alexander Villinger, Peter Langer*, Synlett 2010, 979-981.

“Synthesis of 3,4-Diarylbenzophenones by Site-Selective Suzuki-Miyaura Reactions of 3,4-Bis(trifluoromethylsulfonyloxy)benzophenone“.

 

343.    Inam Iqbal, Muhammad Imran, Christine Fischer, Peter Langer*, Helv. Chim. Acta 2010, 93, 704-710.

“Synthesis of 4-Arylthio-1-hydroxy-homophthalates by [4+2] Cycloaddition of 3-Arylthio-1-silyloxy-1,3-butadienes with Dimethyl Allene-1,3-dicarboxylate”.

 

342.    Asad Ali, Rasheed Ahmad Khera, Muhammad Farooq Ibad, Munawar Hussain, Alexander Villinger, Peter Langer*, Synlett 2010, 731-734.

“Synthesis of Bis(diaryl)sulfones by Site-Selective Suzuki-Miyaura Reactions of 2,4′-Bis(trifluoromethylsulfonyloxy)diphenylsulfone“.

 

341.    Muhammad Farooq Ibad, Munawar Hussain, Obaid-Ur-Rahman Abid, Asad Ali, Ihsan Ullah, Dhafer Saber Zinad, Peter Langer*, Synlett 2010, 411-414.

“One-Pot Synthesis of Unsymmetrical 2,3-Diarylindoles by Site-Selective Suzuki-Miyaura Reactions of N-Methyl-2,3-dibromoindole”.

 

340.    Imran Malik, Munawar Hussain, Asad Ali, Serge-Mithérand Tengho Toguem, Fatima Z. Basha, Christine Fischer, Peter Langer*, Tetrahedron 2010, 66, 1637-1642.

“Synthesis of 2,3-Disubstituted Pyrazines and Quinoxalines by Heck Cross-Coupling Reactions of 2,3-Dichloropyrazine and 2,3-Dichloroquinoxaline. Influence of the Temperature on the Product Distribution”.

 

339.    Vahuni Karapetyan, Satenik Mkrtchyan, Jennifer Hefner, Christine Fischer, Peter Langer*, J. Org. Chem. 2010, 75, 809-814.

”Chelation Control in the [3+3] Annulation Reaction of Alkoxy-Substituted 1,1-Diacylcyclopropanes with 1,3-Bis(trimethylsilyloxy)-1,3-butadienes. Diversity-Oriented Synthesis of Isochromanes”.

 

338.    Ihsan Ullah, Muhammad Sher, Asad Ali, Rasheed Ahmad Khera, Muhammad Farooq Ibad, Alexander Villinger, Christine Fischer, and Peter Langer*, Tetrahedron 2010, 66, 1874-1884.

“Chelation-Control in the Formal [3+3] Cyclization of 1,3-Bis-(silyloxy)-1,3-butadienes with 1-Hydroxy-5-silyloxy-4-en-3-ones. One-Pot Synthesis of 3-Aryl-3,4-dihydroisocoumarins”.

 

337.    Rasheed Ahmad Khera, Ihsan Ullah, Rasheed Ahmad, Abdolmajid Riahi, Nguyen Thai Hung, Muhammad Sher, Alexander Villinger, Christine Fischer, Peter Langer*, Tetrahedron 2010, 66, 1643-1652.

”Synthesis of Functionalized Triarylmethanes by Combination of FeCl3-Catalyzed Benzylations of Acetylacetone with [3+3] Cyclocondensations”.

 

336.    Mathias Lubbe, Peter Langer*, Org. Biomol. Chem. 2010, 881-885.

“Synthesis of 3-hydroxy-5-alkoxyhomophthalates by domino ′2:1-coupling / intramolecular aldol condensation′ reactions of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with tetraalkoxymethanes”.

 

335.     Obaid-Ur-Rahman Abid, Muhammad Farooq Ibad, Muhammad Nawaz, Muhammad Adeel, Nasim Hasan Rama, Alexander Villinger,  Peter Langer*, Tetrahedron Lett. 201051, 657-660.

”Synthesis of 3,5-Diaryl-4-chlorophthalates by [4+2] Cycloaddition of 1-Ethoxy-2-chloro-1,3-bis(trimethylsilyloxy)-1,3-diene with Dimethyl Acetylenedicarboxylate and Subsequent Site-Selective Suzuki-Miyaura Reactions”.

 

334.    Muhammad Farooq Ibad, Obaid-Ur-Rahman Abid, Muhammad Adeel, Muhammad Nawaz, Alexander Villinger, Peter Langer*, Synlett 2010, 195-198.

“Synthesis of 3,5-Diaryl-4-fluorophthalates by [4+2] Cycloaddition of 1-Ethoxy-2-fluoro-1,3-bis(trimethylsilyloxy)-1,3-diene with Dimethyl Acetylenedicarboxylate and Subsequent Site-Selective Suzuki-Miyaura Reactions”.

 

333.    Munawar Hussain, Dhafer Saber Zinad, Ghazwan Ali Salman, Muhammad Sharif, Alexander Villinger, Peter Langer*, Synlett 2010, 276-280.

“Efficient Synthesis of Functionalized Anthraquinones by Domino Twofold Heck / 6p-Electrocyclization Reactions of 2,3-Dibromonaphthoquinone”.

 

332.    Anton Kotljarov, Dmitri V. Sevenard, Viktor O. Iaroshenko,* Roman A. Irgashev, Dmitriy M. Volochnyuk, Peter Langer*, Andrei O. Tolmachev, Vyacheslav Ya. Sosnovskikh*, Synthesis 2010, 671-677.

“Regioselective Synthesis of Novel Perfluoroalkylated Fused Pyridines and 3-(Aminomethylene)thiochroman-4-ones From 3-(Perfluoroalkanoyl)thiochromenones and Amines”.

 

331.    Muhammad Nawaz, Muhammad Farooq Ibad, Obaid-Ur-Rahman Abid, Rasheed Ahmad Khera, Alexander Villinger, Peter Langer*, Synlett 2010, 150-152.

“Synthesis of functionalized p-terphenyls based on site-selective Suzuki cross-coupling reactions of bis(triflates) of 2,5-dihydroxybenzoate”.

 

330.    Uwe Albrecht, Anja Preuss, Andreas Schmidt, Christine Fischer, Peter Langer*, Heterocycles 2010, 80, 289-302.

“Regioselective synthesis of 2,4-(dioxobutyl)dihydroquinolines and -pyridines by chloroformate-mediated reaction of 1,3-bis(silyl enol ethers) with quinolines and pyridines”.

 

 

2009

 

329.    Serge-Mithérand Tengho Toguem, Alexander Villinger, Peter Langer*, Synlett 2009, 3311-3314.

“Site-Selective Suzuki-Miyaura Reactions of 2,3,5-Tribromothiophene”.

 

328.    Stefanie Libnow, Michael Lalk, Helmut Reinke, Christine Fischer, Peter Langer*, J. Carbohydr. Chem. 2009, 28, 483-497.

“Synthesis of 3-(Pyrazol-3-yl)indol-N-glycosides and their Cytotoxic Activity against Human Keratinocytes (HaCaT)”.

 

327.    Muhammad Adeel*, Irshad Ali, Peter Langer, and Alexander Villinger, Acta Cryst. E 2009, E65, o2176.

“Methyl 4,6-dimethyl-5-chloro-3-(4-methoxyphenyl)salicylate”.

 

326.    Verena Wolf, Muhammad Adeel, Stefanie Reim, Alexander Villinger, Christine Fischer, Peter Langer*, Eur. J. Org. Chem. 2009, 5854-5867.

“Synthesis of Chlorinated Arenes by One-Pot Cyclizations of 4-Chloro-1,3-bis(trimethylsilyloxy)-1,3-butadienes”.

 

325.    Muhammad Imran, Inam Iqbal, Nasir Rasool, Christine Fischer, Peter Langer*, Tetrahedron 2009, 65, 8794-8801.

“Synthesis of 2-(Arylthio)benzoates by [3+3] Cyclocondensations of 3-Arylthio-1-silyloxy-1,3-butadienes with 3-Oxo-orthoesters, 1,1,3,3-Tetramethoxypropane and 1,1-Bis(methylthio)-1-en-3-ones”.

 

324.    Mohanad Shkoor, Olumide Fatunsin, Abdolmajid Riahi, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2009, 50, 5726-5728.

“Synthesis of Functionalized Diaryl Selenides by the First Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with Organoselenium Compounds”.

 

323.    Vahuni Karapetyan, Satenik Mkrtchyan, Gagik Ghazaryan, Alexander Villinger, Christine Fischer, Peter Langer*, Tetrahedron 2009, 65, 9271-9279.

“Synthesis of Dichloromethyl-Substituted Salicylates and Pyran-4-ones by Cyclocondensation of  1,3-Bis(silyloxy)-1,3-butadienes with 1,1-Dimethoxy-4,4-dichlorobut-1-en-3-one. Control of the C,C- and C,O-Regioselectivity by the Choice of Lewis Acid”.

 

322.    Munawar Hussain, Imran Malik, Peter Langer*, Synlett 2009, 2691-2695.

“Efficient Synthesis of Functionalized 2,3-Di(alkenyl)benzothiophenes and Dibenzothiophenes based on the First Heck Reactions of 2,3-Di- and 2,3,5-Tribromobenzothiophene”.

 

321.    Abdolmajid Riahi, Mohanad Shkoor, Olumide Fatunsin, Mirza A. Yawer, Ibrar Hussain, Christine Fischer, and Peter Langer*, Tetrahedron 2009, 65, 9300-9315.

“Synthesis of amino- and nitroarenes based on regioselective [3+3] cyclocondensations of 1,3-bis(silyloxy)-1,3-butadienes”.

 

320.    Serge-Mithérand Tengho Toguem, Munawar Hussain, Imran Malik, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2009, 50, 4962-4964.

“Synthesis of Functionalized Benzothiophenes by Twofold Heck and subsequent 6p-Electrocyclization Reactions of 2,3-Dibromothiophene”.

 

319.    Inam Iqbal, Muhammad Imran, Nasir Rasool, Muhammad A. Rashid, Munawar Hussain, Alexander Villinger, Christine Fischer, Peter Langer*, Tetrahedron 2009, 65, 7562-7572.

“Synthesis of Functionalized 2-(Arylthio)benzoates by Formal [3+3] Cyclizations of 3-Arylthio-1-silyloxy-1,3-butadienes with 3-Silyloxy-2-en-1-ones and 1,1-Diacylcyclopropanes”.

 

318.    Ihsan Ullah, Rasheed Ahmad Khera, Munawar Hussain, Peter Langer*, Tetrahedron Lett. 2009, 50, 4651-4653.

“Synthesis of Tetraarylquinones by Suzuki Cross-Coupling Reactions of Tetrabromobenzoquinone”.

 

317.    Abdolmajid Riahi, Mohanad Shkoor, Olumide Fatunsin, Rasheed Ahmad Khera, Christine Fischer, Peter Langer*, Org. Biomol. Chem. 2009, 7, 4248-4251.

“Regioselective synthesis of 4-acyl-1-hydroxy-2,3-benzodioates by chelation-controlled [3+3] annulation of 3-acyl-4-ethoxy-2-oxo-3-enoates with 1,3-bis(trimethylsilyloxy)-1,3-butadienes.”

 

316.    Muhammad Nawaz, Muhammad Adeel, Muhammad Farooq Ibad, Peter Langer*, Synlett 2009, 2154-2156.

“Synthesis of functionalized 2′,4-diarylbenzophenones based on site-selective Suzuki cross-coupling reactions”.

 

315.    Abdolmajid Riahi, Martina Wurster, Michael Lalk,* Ulrike Lindequist, Peter Langer*, Bioorg. Med. Chem. 2009, 17, 4323-4326.

“Synthesis and Antimicrobial Activity of 4-Hydroxy-4-(pyridyl)alk-3-en-2-ones”.

 

314.    Alina Bunescu, Sebastian Reimann, Mathias Lubbe, Anke Spannenberg, Peter Langer*, J. Org. Chem. 2009, 74, 5002-5010.

“Synthesis of Trifluoromethyl-Substituted Arenes, Cyclohexenones and Pyran-4-ones by Cyclocondensation of 1,3-Bis(silyloxy)-1,3-butadienes with 1,1-Dimethoxy-4,4,4-trifluorobut-1-en-3-one. Influence of the Lewis Acid on the Product Distribution”.

 

313.    Vahuni Karapetyan, Satenik Mkrtchyan, Mathias Lubbe, Alexander Villinger, Peter Langer*, Tetrahedron 2009, 65, 6211-6217.

“Synthesis of 6-Formylsalicylates based on Regioselective [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with 1,1-Dichloro-4-ethoxy-3-buten-2-ones”.

 

312.    Nicole Höttecke, Christine Fischer, Helmut Reinke, Peter Langer*, Z. Naturforsch. B. 2009, 64b, 699-706.

“Synthesis of Bicyclic Salicylates by [3+3] Cyclization of 1,3-Bis(Silyl Enol Ethers) with Cyclic 3-(Silyloxy)alk-2-en-1-ones”.

 

311.    Eline M Basílio Janke, Sebastian Schlund, Bernd Engels*, Rüdiger Dede, Ibrar Hussain, Peter Langer*, Michael Rettig, Klaus Weisz*, J. Org. Chem. 2009, 74, 4878-4881.

“Tautomeric Equilibria of 3-Formylacetylacetone by Low-Temperature NMR Spectroscopy and ab initio Calculations”.

 

310.    Munawar Hussain, Nguyen Thai Hung, Peter Langer*, Tetrahedron Lett. 2009, 50, 3929-3932.

“Efficient Synthesis of Functionalized Dibenzofurans by Domino ¢Twofold Heck / 6p-Electrocyclization¢ Reactions of 2,3-Di- and 2,3,5-Tribromobenzofuran”.

 

309.    Peter Langer*, Guest Editor, Tetrahedron Symposium-in-Print 2009, 65, 5455.

“Recent Advances in Organosilicon Chemistry directed towards Organic Synthesis. Foreword”

 

308.    Franziska Bendrath and Peter Langer*, Curr. Org. Chem. 2009, 13, 955-964.

“2-Isocyanatobenzonitrile and 2‑Isothiocyanatobenzonitrile – Versatile Building Blocks in Organic Synthesis”.

 

307.    Muhammad Imran, Inam Iqbal, Peter Langer*, Synlett 2009, 1477-1479.

„Regioselective Synthesis of 2-Arylthio-4-(methoxy)benzoates by the First [3+3] Cyclocondensations of 3-Arylthio-1-silyloxy -1,3-butadienes with 3-Oxo-orthoesters”.

 

306.    Mohanad Shkoor, Abdolmajid Riahi, Olumide Fatunsin, Helmut Reinke, Christine Fischer, Peter Langer*, Synthesis 2009, 2223-2235.

“Diversity-oriented synthesis of functionalized diaryl-sulfones by regioselective [3+3] cyclocondensations of 1,3-bis(silyloxy)-1,3-butadienes with 2-arylsulfonyl-3-ethoxy-2-en-1-ones”.

 

305.    Orazio A. Attanasi*, Gianfranco Favi, Gianluca Giorgi, Fabio Mantellini, Vahuni Karapetyan, Peter Langer*, Tetrahedron 2009, 65, 5456-5461  (Symposium-in-Print).

“Regioselective synthesis of spiro-cyclopropanated 1-aminopyrrol-2-ones by Bi(OTf)3-catalyzed one-pot ′Mukaiyama-Michael addition/cyclization/ring-contraction′ reactions of 1,2-bis(trimethylsilyloxy)-cyclobutene with 1,2-diaza-1,3-butadienes”.

 

304.    Tung T. Dang, Tuan T. Dang, Nasir Rasool, Alexander Villinger, Peter Langer*, Adv. Synth. Catal. 2009, 351, 1595-1609.

“Regioselective Palladium(0)-Catalyzed Cross-Coupling Reactions and Metal-Halide Exchange Reactions of Tetrabromothiophene: Optimization, Scope and Applications”.

 

303.    Christian Haase, Peter Langer*, Tetrahedron 2009, 65, 4530-4539.

“Synthesis of 5-alkylidene-2,5-dihydropyrrol-2-ones based on cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with oxalyl chloride”.

 

302.    Peter Langer*, Synlett 2009, 2205-2216 (account).

“Synthesis of Fluorinated Arenes and Hetarenes based on One-Pot Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

301.    Abdolmajid Riahi, Mohanad Shkoor, Rasheed Ahmad Khera, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2009, 50, 3017-3019.

“Regioselective synthesis of functionalized 4-nitro- and 4-aminophenols based on formal [3+3] cyclocondensations of 3-ethoxy-2-nitro-2-en-1-ones with 1,3-bis(silyloxy)-1,3-butadienes”.

 

300.    Munawar Hussain, Tung T. Dang, Peter Langer*, Synlett 2009, 1822-1826.

“Synthesis of Carbazoles and 1,2-Dihydrocarbazoles by 'Domino Twofold Heck / 6π-Electrocyclization' Reactions of Di- and Tribromo-N-methylindoles”.

 

299.    Rasheed Ahmad, Rasheed Ahmad Khera, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2009, 50, 3020-3022.

“One-pot synthesis of 2,3-dihydro-4H-pyran-4-ones by cyclocondensation of 1,3-diketone dianions with aldehydes”.

 

298.    Muhammad Adeel, Muhammad Nawaz, Alexander Villinger, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2009, 65, 4099-4105.

“Synthesis of Polyketide-Type Phenols by Domino ′Michael / Retro-Michael / Aldol′ Reactions of 3-Formylchromones with Silyl Enol Ethers derived from Ethyl 3,5-Dioxohexanoate”.

 

297.    Gerson Mroß, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2009, 65, 3910-3917.

“Synthesis of Functionalized 2-Alkoxybenzoates, 2-Aryloxybenzoates and Xanthones based on Formal [3+3] Cyclocondensations of 3-Alkoxy- and 3-Aryloxy-1-silyloxy-1,3-butadienes with 3-Silyloxy-2-en-1-ones”.

 

296.    Inam Iqbal, Muhammad Imran, Peter Langer*, Synthesis 2009, 2430-2434.

“Synthesis of 5-Arylthio-3-hydroxyphthalates by the First [4+2] Cycloadditions of 3-Arylthio-1-silyloxy-1,3-butadienes with Dimethyl Acetylenedicarboxylate”.

 

295.    Constantin Mamat*, Helmut Reinke, Peter Langer*, Z. Naturforsch. B. 2009, 64b, 423-426.

„NMR Studies and Crystal Structure Determinations of CF3 Group Containing Bicyclic Phenolates”.

 

294.    Abdolmajid Riahi, Matthias Lau, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2009, 65, 5491-5496 (Symposium-in-Print). 

“Regioselective synthesis of functionalized 3-aryl-4-(chloroethyl)phenols by domino ′[3+3] cyclization / homo-Michael′ reactions of 1,3-bis(silyloxy)-1,3-butadienes with 1-formyl- and 1-acetyl-1-aroyl-cyclopropanes”.

 

293.    Thomas Rahn, Bettina Appel, Wolfgang Baumann, Haijun Jiao, Christine Fischer, Armin Börner, Peter Langer*, Org. Biomol. Chem. 2009, 7, 1931-1938.

“Synthesis of chromones and 4-hydroxyquinolines based on uncatalyzed condensations of 1-methoxy-1,3-bis(trimethylsilyloxy)-1,3-butadiene with 2-alkoxy- and 2-nitrobenzoyl chlorides”.

 

292.    Mohanad Shkoor, Abdolmajid Riahi, Olumide Fatunsin, Ibrar Hussain, Mirza A. Yawer, Mathias Lubbe, Stefanie Reim, Helmut Reinke, Christine Fischer, Peter Langer*, Org. Biomol. Chem. 2009, 7, 2182-2186.

“Diversity-Oriented Synthesis of 1-Hydroxy-2,4-benzodioates by Regioselective [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with 3-Alkoxy- and 3-Silyloxy-2-alkoxycarbonyl-2-en-1-ones”.

 

291.    Abdolmajid Riahi, Olumide Fatunsin, Mohanad Shkoor, Rüdiger Dede, Helmut Reinke, Christine Fischer, Peter Langer*, Synthesis 2009, 1623-1634.

First Synthesis of 5-Cyanosalicylates by Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes

 

290.    Stefan Büttner, Abdolmajid Riahi, Ibrar Hussain, Mirza A. Yawer, Mathias Lubbe, Peter Langer*, Tetrahedron 2009, 65, 2124-2135.        

“First Synthesis of Functionalized 5-Aryl-3-(trifluoromethyl)phenols by Regioselective [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with 3-Aryl-3-silyloxy-1-trifluoromethyl-2-en-1-ones”.

 

289.    Rasheed Ahmad, Abdolmajid Riahi, Peter Langer*, Tetrahedron Lett. 2009, 50, 1490-1492.

“Synthesis of Functionalized Triarylmethanes based on a ′FeCl3-Catalyzed Benzylation / [3+3] Cyclocondensation′ Strategy”.

 

288.    Benard Juma, Muhammad Adeel, Alexander Villinger, Helmut Reinke, Anke Spannenberg, Christine Fischer, Peter Langer*, Adv. Synth. Catal. 2009, 351, 1073-1079.

“Synthesis of 2,6-Dioxo-1,2,3,4,5,6-hexahydroindoles by Acid-Catalyzed Cyclization of Acetal-Protected (2,4-Dioxocyclohex-1-yl)acetamides and their Transformation into 5,8,9,10-Tetrahydro-6H-indolo[2,1-a]isoquinolin-9-ones”.

 

287.     Farman Ullah, Tung T. Dang, Joachim Heinicke, Alexander Villinger, Peter Langer*, Synlett 2009, 838-842.

“Regioselective Sonogashira Reactions of N-Methyltetrabromo-pyrrole. First Synthesis of Tri- and Tetra(1-alkynyl)pyrroles”.

 

286.     Gerson Mroß, Peter Langer*, Lett. Org. Chem. 2009, 6, 189-190.

“Synthesis of 4,5-Dimethoxy-o-quinone by Formal [4+2] Cyclization of 2,3-Dimethoxy-1,3-butadiene with Oxalyl Chloride”.

 

285.     Stefanie Libnow, Martin Hein, Peter Langer*, Synlett 2009, 221-224.

“The First N-Glycosylated Indoxyls and their Application to the Synthesis of Indirubin-N-glycosides (Purple Sugars)”.

 

284.    Olumide Fatunsin, Abdolmajid Riahi, Mohanad Shkoor, Rüdiger Dede, Helmut Reinke, Peter Langer*, Synlett 2009, 201-204.

“First Synthesis of Functionalized Benzonitriles by Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes”.

 

283.    Gerson Mroß, Simone Ladzik, Helmut Reinke, Anke Spannenberg, Christine Fischer, Peter Langer*, Synthesis 2009, 2236-2248.

“Synthesis of Functionalized Salicylates by Formal [3+3] Cyclocondensation of 1,3-Bis(silyloxy)-1,3-butadienes with 3-Alkoxy-2-en-1-ones”.

 

282.    Asad Ali, Ihsan Ullah, Muhammad Sher, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2009, 50, 118-120.

“Synthesis of Sterically Encumbered Biaryls based on a ′Copper(I)-Catalyzed Arylation / [3+3] Cyclocondensation′ Strategy”.

 

281.    Abdolmajid Riahi, Mohanad Shkoor, Olumide Fatunsin, Mathias Lubbe, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2009, 50, 115-117.

“First synthesis of 4-(arylsulfonyl)phenols by regioselective [3+3] cyclocondensations of 1,3-bis(silyloxy)-1,3-butadienes with 2-arylsulfonyl-3-ethoxy-2-en-1-ones”.

 

280.    Sven Rotzoll, Helmut Reinke, Christine Fischer, and Peter Langer*, Synthesis 2009, 69-78.

„Synthesis of Novel Halogenated 4(1H)-Quinolones by Thermolysis of Arylaminomethylene-1,3-dioxane-4,6-diones”.

 

279.    Esen Bellur, Mirza A. Yawer, Ibrar Hussain, Abdolmajid Riahi, Olumide Fatunsin, Christine Fischer, Peter Langer*, Synthesis 2009, 227-242.

“Synthesis of 3-Acylpyrroles, 3-(Alkoxycarbonyl)pyrroles, 6,7-Dihydro-1H-indol-4(5H)-ones and 3-Benzoylpyridines based on Staudinger-Aza-Wittig Reactions of 1,3-Dicarbonyl Compounds with 2- and 3-Azido-1,1-dialkoxyalkanes”.

 > > Highlighted in Synfacts 2009, 4, 374

 

278.    Stefanie Reim, Matthias Lau, Muhammad Adeel, Ibrar Hussain, Mirza A. Yawer, Abdolmajid Riahi, Zafar Ahmed, Christine Fischer, Helmut Reinke, Peter Langer*, Synthesis 2009, 445-463.

„Synthesis of Biaryls, Fluorenones, Cyclopenta[def]phenanthren-4-ones and Benzophenones based on Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes”.

 

277.    Muhammad Adeel, Muhammad A. Rashid, Nasir Rasool, Rasheed Ahmad, Alexander Villinger, Helmut Reinke, Christine Fischer, and Peter Langer*, Synthesis 2009, 243-250.

“Regioselective Synthesis of Functionalized Biaryls based on the First [3+3] Cyclocondensations of 4-Aryl-1,3-bis(trimethylsilyloxy)-1,3-butadienes”.

 

276.     Wolf-Diethard Pfeiffer, Horst Dollinger, Peter Langer*, Phosphorus, Sulfur, Silicon & Related Elem. 2009, 184, 626-637.

“Synthesis of 5-Thioxo-hexahydrobenzo[b]thiopheno-[2,3-d]-1,2,4-triazolo[1,5-c]pyrimidines and Related Compounds based on Cyclizations of 2-Isothiocyanato-3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophene”.

 

275.     Inam Iqbal, Muhammad Imran, Alexander Villinger, Peter Langer*, Synthesis 2009, 297-305.

“Regioselective Synthesis of Functionalized 2-(Aryloxythio)-benzoates by the First [3+3] Cyclizations of 3-Aryloxythio-1-silyloxy-1,3-butadienes with 3-Alkoxy-2-en-1-ones”.

 

 

2008

 

 

274.    Holger Feist and Peter Langer*, Synthesis 2008, 3877-3902 (review).

“One-Pot Cyclizations of (2,4-Dioxobutylidene)phosphoranes and (2-Alkoxy-4-oxo-but-2-enylidene)phosphoranes”.  

 

273.    Nicole Höttecke, Sven Rotzoll, Uwe Albrecht, Michael Lalk, Peter Langer*, Bioorg. Med. Chem. 2008, 16, 10319-10325.

“Synthesis and Antimicrobial Activity of 2-Alkenyl-chroman-4-ones, 2-Alkenylthiochroman-4-ones and 2-Alkenylquinol-4-ones”.

 

272.     Ibrar Hussain, Mirza Arfan Yawer, Michael Lalk, Ulrike Lindequist, Alexander Villinger, Christine Fischer, Peter Langer*, Bioorg. Med. Chem. 2008, 16, 9898-9903.

„Hetero-Diels-Alder Reaction of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Arylsulfonylcyanides. Synthesis and Antimicrobial Activity of 4-Hydroxy-2-(arylsulfonyl)pyridines”.

 

271.    Constantin Mamat*, Helmut Reinke, Peter Langer, Anal. Sci.: X-Ray Struct. Anal. Online 2008, 24, x265.

“Crystal Structure of Ethyl 6,6’-(1,2-Ethanediyl)-4,4’-bis(trifluoromethyl)-salicylate”.

 

270.    Andrea Eick, Zhou Xiao, Peter Langer, Klaus Weisz*, Bioorg. Med. Chem. 2008, 16, 9106-9112.

“Spectroscopic studies on the formation and thermal stability of DNA triplexes with a benzoannulated d-carboline - oligonucleotide conjugate".

 

269.    Katrin Marie Driller, Stefanie Libnow, Martin Hein, Manuela Harms, Kristian Wende, Michael Lalk, Dirk Michalik, Helmut Reinke, Peter Langer*, Org. Biomol. Chem. 2008, 6, 4218-4223.

„Synthesis of 6H-Indolo-[2,3-b]quinoxaline-N-glycosides and their Cytotoxic Activity against Human Ceratinocytes (HaCaT)”.

 

268.     Mathias Lubbe, Jörg-Peter Gütlein, Helmut Reinke, Peter Langer*, Synlett 2008, 2671-2673.

 „Regioselective Synthesis of Polyketide-Type Phenols by the First [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with 3-Oxo-orthoesters“.

 

267.    Muhammad Imran, Inam Iqbal, Nasir Rasool, Muhammad A. Rashid, Peter Langer*, Synlett 2008, 2708-2710.

„Regioselective Synthesis of 2-Thiophenoxybenzoates by the First Catalytic [3+3] Cyclocondensations of 1-Trimethylsilyloxy-3-thiophenoxy-1,3-butadienes with 1,1,3,3-Tetramethoxypropane”.

 

266.     Muhammad Adeel, Stefanie Reim, Verena Wolf, Mirza A. Yawer, Ibrar Hussain, Alexander Villinger, Peter Langer*, Synlett 2008, 2629-2632.

“Synthesis and Reactions of the First Fluorine-Containing 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

265.     Matthias Lau, Peter Langer*, Tetrahedron Lett. 2008, 49, 5618-5619.

„Synthesis of 5-(2-Aryl-2-haloethyl)salicylates by the First Domino ¢[3+3] Cyclization / Ring-Cleavage¢ Reactions of  1,3-Bis(silyloxy)-1,3-butadienes with 3-Acetyl-5-aryl-4,5-dihydrofurans”.

 

264.    Thomas Rahn, T. H. Tam Dang, Anke Spannenberg, Christine Fischer, Peter Langer*, Org. Biomol. Chem. 2008, 6, 3366-3370.

„Regioselective Synthesis of Functionalized 3,5-Diketoesters and 2,4-Diketosulfones by Uncatalyzed Condensation of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with a,b-Unsaturated Acid Chlorides and Sulfonyl Chlorides”.

 

263.     Muhammad Sher, Asad Ali, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2008, 49, 5400-5402.

“Synthesis of 3-Aryl-3,4-dihydroisocoumarins by Regioselective Domino ′[3+3] Cyclization / Lactonization′ Reactions of 1,3-Bis(silyloxy)-1,3-butadienes with 1-Hydroxy-5-silyloxy-4-en-3-ones”.

 

262.     Tung T. Dang, Alexander Villinger, Peter Langer*, Adv. Synth. Catal. 2008, 350, 2109-2117.

“Efficient Synthesis of Substituted Selenophenes based on the First Palladium(0)-Catalyzed Cross-Coupling Reactions of Tetrabromoselenophene”.

 

261.    Stefan Büttner, Mathias Lubbe, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2008, 64, 7968-7976.

“First Synthesis of 5-Alkyl- and 5-Aryl-3-(perfluoroalkyl)phenols by [3+3] Cyclocondensation of 1,3-Bis(silyloxy)-1,3-butadienes with 3-Silyloxy-1-(perfluoroalkyl)prop-2-en-1-ones”.

 

260.     Stefanie Reim, Dirk Michalik*, Klaus Weisz, Zhou Xiao, Peter Langer*, Org. Biomol. Chem. 2008, 6, 3079-3084.

„Synthesis and Solution Structure of 3,5-Dioxopimelic Acid Diesters – Stable 1,3,5,7-Tetracarbonyl Derivatives”.

 

259.    Mathias Lubbe, Renske Klassen, Tiana Trabhardt, Alexander Villinger, Peter Langer*, Synlett 2008, 2331-2333.

“Regioselective Synthesis of Functionalized 3-(Methylthio)phenols by Formal [3+3] Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 1,1-Bis(methylthio)-1-en-3-ones”.

 

258.    Ibrar Hussain, Mirza A. Yawer, Bettina Appel, Muhammad Sher, Ahmed Mahal, Alexander Villinger, Peter Langer*, Tetrahedron 2008, 64, 8003-8009.

“Synthesis of 4-Hydroxy- and 2,4-Dihydroxy-homophthalates by [4+2] Cycloaddition of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Dimethyl Allene-1,3-dicarboxylate”.

 

257.     Stefanie Reim, Ibrar Hussain, Muhammad Adeel, Mirza A. Yawer, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2008, 49, 4901-4904.

“Synthesis and Reactions of the First  2-Chloro-1,3-bis(trimethylsilyloxy)-1,3-butadienes”.

 

256.     Ibrar Hussain, Abdolmajid Riahi, Mirza Arfan Yawer, Helmar Görls, Peter Langer*, Org. Biomol. Chem. 2008, 6, 3542-3551.

“One-Pot Synthesis of 6-(Thien-2-yl)- and 6-(Fur-2-yl)salicylates based on Regioselective [3+3] Cyclizations of 1,3-Bis(trimethyl-silyloxy)-1,3-butadienes”.

 

255.    Mirza A. Yawer, Ibrar Hussain, Andreas Schmidt, Jörg-Peter Gütlein, Haijun Jiao, Helmut Reinke, Anke Spannenberg, Peter Langer*  Eur. J.Org. Chem. 2008, 4193-4199.

“Synthesis of Functionalized Isobenzomorphans by Two-Step Cyclocondensation of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Isoquinolines”.

 

254.     Mathias Lubbe, Constantin Mamat, Peter Langer*, Synlett 2008, 1684-1686.

„Regioselective Synthesis of Rare 3-(Halomethyl)phenols based on Formal [3+3] Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

253.    Andreas Schmidt, Dirk Michalik*, Ehsan Ullah, Sven Rotzoll, Christine Fischer, Helmut Reinke, Peter Langer*, Org. Biomol. Chem. 2008, 6, 2804-2814.

„Synthesis of Azoxabicyclo[3.3.1]nonanones based on Reactions of 1,1-Bis(trimethylsilyloxy)ketene Acetals with Isoquinolines and Quinolines”.

 

252.     Mathias Lubbe, Alina Bunescu, Alexander Villinger, Peter Langer*, Synlett 2008, 1862-1864.

“Synthesis of 4-Methoxy-6-(trifluoromethyl)salicylates by [3+3] Cyclocondensations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 1,1-Dimethoxy-4,4,4-trifluorobut-1-en-3-one”.

 

251.     Mirza A. Yawer, Ibrar Hussain, Inam Iqbal, Anke Spannenberg, Peter Langer*, Tetrahedron Lett. 2008, 49, 4467-4469.

“Synthesis of Functionalized Dibenzo[b,d]pyrid-6-ones based on a [3+3]-Cyclocondensation / Lactamization Strategy”.

 

250.    Jennifer Hefner, Peter Langer*, Tetrahedron Lett. 2008, 49, 4470-4472.

“Chelation Control in the [3+3] Annulation Reactions of Alkoxy-Substituted 1,1-Diacylcyclopropanes with 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

249.    Vahuni Karapetyan, Satenik Mkrtchyan, Tung T. Dang, Helmut Reinke, Peter Langer*, Tetrahedron 2008, 64, 8010-8015.

“Regioselective Synthesis of 6-Halomethyl-5,6-dihydro-4H-1,2-oxazines based on Iodine-mediated Cyclizations of Arylalkenyl-oximes”.

 

248.     Vahuni Karapetyan, Satenik Mkrtchyan, Andreas Schmidt, Jörg-Peter Gütlein, Alexander Villinger, Helmut Reinke, Haijun Jiao, Christine Fischer, and Peter Langer*, Org. Biomol. Chem. 2008, 2961-2968.

“Synthesis of 7,8-Benzo-4-hydroxy-1,9-diazabicyclo[3.3.1]non-3-enes by Cyclization of 1,3-Bis(Silyl Enol Ethers) with Quinazolines”.

 

247.     Peter Langer,* Shadi Amiri, Anja Bodtke, Nehad N. R. Saleh, Klaus Weisz, Helmar Görls, Peter R. Schreiner*, J. Org. Chem. 2008, 73, 5048-5063.

“3,5,7,9-Substituted Hexaazaacridines – Toward Structures with Nearly Degenerate Singlet-Triplet Energy Separations”.

 

246.     Stefanie Libnow, Karen Methling, Martin Hein, Dirk Michalik, Manuela Harms, Kristian Wende, Anke Flemming, Martin Köckerling, Helmut Reinke, Patrick J. Bednarski, Michael Lalk, and Peter Langer* Bioorg. Med. Chem. 2008, 16, 5570-5583.

“Synthesis of Indirubin-N-glycosides and their Anti-Proliferative Activity against Human Cancer Cell Lines”.

 

245.     Vahuni Karapetyan, Satenik Mkrtchyan, Andreas Schmidt, Orazio A. Attanasi, Gianfranco Favi, Fabio Mantellini, Alexander Villinger, Christine Fischer, Peter Langer*, Adv. Synth. Catal. 2008, 350, 1331-1336.

“Diversity-Oriented Synthesis of Functionalized 1-Aminopyrroles by Regioselective ZnCl2-Catalyzed One-Pot ¢Conjugate Addition/Cyclization¢ Reactions of 1,3-Bis(silyl enol ethers) with 1,2-Diaza-1,3-butadienes”.

 

244.    Muhammad A. Rashid, Nasir Rasool, Bettina Appel, Muhammad Adeel, Vahuni Karapetyan, Satenik Mkrtchyan, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2008, 64, 5416-5425.

“Synthesis of 1-Azaxanthones by Condensation of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 3-(Cyano)benzopyrylium Triflates and Subsequent Domino ¢Retro-Michael / Nitrile-Addition / Heterocyclization¢ Reaction”.

 

243.    Muhammad A. Rashid, Nasir Rasool, Muhammad Adeel, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2008, 64, 3782-3793.

“Synthesis of Functionalized Diarylsulfides based on Regioselective One-Pot Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

242.     Jennifer Hefner, Peter Langer*, Tetrahedron Lett. 2008, 49, 2262-2264.

“Synthesis of Sterically Encumbered and Functionalized Diaryl-diazenes by Formal [3+3] Cyclization of 2-Aryl-diazenyl-3-silyloxy-2-en-1-ones with 1,3-Bis(silyloxy)-1,3-butadienes”.

 

241.     Nasir Rasool, Muhammad A. Rashid, Muhammad Adeel, Helmar Görls, Peter Langer*, Tetrahedron Lett. 2008, 49, 2254-2257.

“Synthesis and Reactions of Hydroxyspiro[5.2]cyclooctenones based on the Cyclization of the Dianions of Acetone and Diethyl 2-Oxopropylphosphonate with 1,1-Diacylcyclopropanes”.

 

240.    Muhammad A. Rashid, Nasir Rasool, Inam Iqbal, Imran Iqbal, Peter Langer*, Tetrahedron Lett. 2008, 49, 2466-2468.

“Regioselective Synthesis of Functionalized 2-(Phenylthio)benzoates by ′[3+3] Cyclization / Homo-Michael′ Reactions of 1-Methoxy-1-trimethylsilyloxy-3-phenylthio-1,3-butadienes with 1,1-Diacylcyclopropanes”.

 

239.     Stefanie Reim, Peter Langer*, Tetrahedron Lett. 2008, 49, 2329-2332..

“The First 4-Chloro-1,3-bis(trimethylsilyloxy)-1,3-diene and its Application to the Regioselective Synthesis of Chlorinated Arenes”.

 

238.     Peter Langer*, Chimica Oggi/Chemistry Today 2008, 26 n 1, 9.

“2-Vinylchroman-4-ones as Potent Antibiotic Agents”.

 

237.     Gerson Mroß, Helmut Reinke, Peter Langer*, Synlett 2008, 963-966.

”Synthesis of Functionalized Biaryls based on a ′Heck Cross-Coupling / [3+3] Cyclization′ Strategy”.

 

236.    Muhammad Sher, Peter Langer*, Synlett 2008, 1050-1053.

“Regioselective synthesis of functionalized resorcins by cyclization of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with 3,3-dimethoxypentanoyl chloride”.

 

235.    Mirza A. Yawer, Abdolmajid Riahi, Muhammad Adeel, Ibrar Hussain, Christine Fischer, Peter Langer*, Synthesis 2008, 1276-1282.

“One-pot synthesis of 6-(pyridyl)salicylates by formal [3+3] cyclizations of 1,3-bis(silyl enol ethers) with 3-pyridyl-3-silyloxy-2-en-1-ones”.

 

234.     Benard Juma, Muhammad Adeel, Alexander Villinger, Peter Langer*, Tetrahedron Lett. 2008, 49, 2272-2274.

“Efficient synthesis of 2,6-dioxo-1,2,3,4,5,6-hexahydroindoles based on the synthesis and reactions of (2,4-dioxocyclohex-1-yl)acetic acid derivatives”.

 

233.    Nasir Rasool, Muhammad A. Rashid, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2008, 64, 3246-3252.

“Synthesis and Reactions of Functionalized Spirocyclo-propanes by Cyclization of Dilithiated β-Ketosulfones, a-Cyanoacetone and Diethyl 2-Oxopropylphosphonate with 1,1-Diacetylcyclopropane”.

 

232.     Tung T. Dang, Tuan T. Dang, Rasheed Ahmad, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2008, 49, 1698-1700.

“Regioselective Synthesis of Functionalized Pyrroles based on the first Palladium(0)-Catalyzed Cross-Coupling Reactions of N-Methyltetrabromopyrrole”.

 

231.    Thomas Rahn, Haijun Jiao, Wolfgang Baumann, Anke Spannenberg, Peter Langer*, Eur. J. Org. Chem. 2008, 971-974.

“Synthesis and characterization of cyclopropyl-polyketides. A combined experimental and theoretical study”.

 

230.    Tung T. Dang, Tuan T. Dang, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2008, 64, 2207-2215.

“Synthesis of Pyrazole-5-carboxylates and Pyrazole-1,5-Dicarboxylates by One-Pot Cyclization of Hydrazone Dianions with Diethyl Oxalate”.

 

229.     Sven Rotzoll, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2008, 49, 675-677.

“Synthesis of Heterospiranes by Cyclization of Dinucleophiles with 1,1-Bis(tosyloxymethyl)cyclopropane and –cyclobutane”.

 

228.   Muhammad A. Rashid, Nasir Rasool, Muhammad Adeel, Christine Fischer, Helmut Reinke, Anke Spannenberg, Peter Langer*  Tetrahedron 2008, 64, 529-535.

“Regioselective Synthesis of Diaryl Ethers based on One-Pot Cyclizations of 4-Aryloxy-1,3-bis(trimethylsilyloxy)-1,3-dienes“.

 

227.   Stefanie Libnow, Martin Hein, Peter Langer*  Tetrahedron Lett. 2008, 49, 289-291.

“First synthesis of oxaanalogous isoindigo-N-glycosides”.

 

226.    Sven Rotzoll, Peter Langer*, Synthesis 2008, 45-52.

“Regioselective Synthesis of Oxepin- and Oxocin-Annulated Quinolines by Combined ′Claisen-Rearrangement / Olefin-Metathesis′ Reactions”.

 

225.    Ibrar Hussain, Mirza A. Yawer, Matthias Lau, Thomas Pundt, Christine Fischer, Helmut Reinke,      Helmar Görls, Peter Langer*, Eur. J. Org. Chem.  2008, 503-518.

“Regioselective  Synthesis of Fluorinated Phenols, Biaryls, 6H-Benzo[c]chromen-6-ones and Fluorenones based on Formal  [3+3] Cyclizations of 1,3-Bis(Silyl Enol Ethers)”.

 

224.    Mirza A. Yawer, Ibrar Hussain, Christine Fischer, Helmar Görls, Peter Langer*, Tetrahedron 2008, 64, 894-900 (Symposium-in-Print).

“Synthesis of 2-Benzoyl-4-(2-hydroxybenzoyl)phenols by Catalytic Domino ′Michael-Retro-Michael-Mukaiyama-Aldol′ Reactions of 1-Aryl-1,3-bis(silyloxy)buta-1,3-dienes with 3-Formylchromones“.

 

223.    Constantin Mamat, Thomas Pundt, T. H. Tam Dang, Renske Klassen, Helmut Reinke, Martin Köckerling, Peter Langer*, Eur. J. Org. Chem. 2008, 492-502.

“One Pot Synthesis of Functionalized 3-(Trifluoromethyl)phenols by Formal [3+3] Cyclization of 1,3-Bis(silyl enol ethers) with a,b-Unsaturated Trifluoromethylketones”.

 

2007

 

222.    Andreas Schmidt, Vahuni Karapetyan, Orazio A. Attanasi, Gianfranco Favi, Helmar Görls, Fabio Mantellini, Peter Langer,* Synlett 2007, 2965-2968.

“Regioselective Synthesis of New 1-Aminopyrroles and 1-Amino-4,5,6,7-tetrahydroindoles by one-pot ¢conjugate addition / cyclization¢ reactions of 1,3-bis(silyl enol ethers) with 1,2-diaza-1,3-butadienes”.

 

221.    Van T. H. Nguyen, Joachim T. Anders, Qingjun Ma, Regine Herbst-Irmer, Peter Langer*, Tetrahedron 2007, 63, 12975-12985.

“Synthesis of Functionalized Pyran-4-ones based on Ring Transformations of 5-Alkylidene-2,5-dihydro-pyrrol-2-ones”.

 

220.    Rüdiger Dede, Lars Michaelis, Dilver Fuentes, Mirza A. Yawer, Ibrar Hussain, Christine Fischer, Peter Langer*, Tetrahedron 2007, 63, 12547-12561.

“Synthesis of 4-Alkoxycarbonyl-butenolides by Uncatalyzed One-Pot Cyclization of 1,3-Bis(silyloxy)alk-1-enes with Oxalyl Chloride”.

 

219.    Mirza Arfan Yawer, Ibrar Hussain, Stefanie Reim, Zafar Ahmed, Ehsan Ullah, Inam Iqbal, Christine Fischer, Helmut Reinke, Helmar Görls, and Peter Langer* , Tetrahedron 2007, 63, 12562-12575.

“Regioselective Synthesis of 4-Chlorophenols, 10-Chloro-7-hydroxy-6H-benzo[c]chromen-6-ones and 4-Chloro-1-hydroxy-9H-fluoren-9-ones based on [3+3] Cyclizations of 1,3-Bis(silyloxy)-1,3-dienes with 2-Chloro-3-silyloxy-2-en-1-ones”.

 

218.    Muhammad Sher, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2007, 48, 7923-7925.

“Regioselective synthesis of 1-(2,2-dimethoxyethyl)-1,2,3-triazoles by copper(I)-catalyzed [3+2] cyclization of 2-azido-1,1-dimethoxyethane with alkynes”.

 

217.    Nasir Rasool, Muhammad A. Rashid, Helmut Reinke, Christine Fischer, Peter Langer*, Tetrahedron 2007, 63, 11626-11635.

“Regioselective Synthesis of ω-Bromo-3-ketosulfones, ω-Bromo-3-ketonitriles, and 2-(ω-Bromoalkyl)benzofurans based on a ′Ring-Closing / Ring-Opening′ Strategy”.

 

216.     Anja Bodtke, Wolf-Diethard Pfeiffer, Helmar Görls, Horst Dollinger, Peter Langer,* Tetrahedron 2007, 63, 11287-11298.

“Sequential Cyclizations of 2-Isothiocyanatobenzonitrile (ITCB) and 2-Isocyanatobenzonitrile (ICB) with α-Aminoketones: Synthesis of 5-Thioxo-6H-imidazo[1,2-c]quinazolines and Related Compounds”.

 > > Highlighted in Synfacts 2008, 01, 0017

 

215.    Esen Bellur, Holger Feist, Peter Langer*, Tetrahedron 2007, 63, 10865-10888 (review).

“Recent Advances in the Chemistry of 2-(2-Oxoalkylidene)tetrahydrofurans”.

 

214.     Muhammad Sher, Zafar Ahmed, Muhammad A. Rashid, Christine Fischer, Peter Langer*, J. Org. Chem. 2007, 72, 6284-6286.

“First Catalytic [3+3] Cyclizations of 1,3-Bis(Silyl Enol Ethers)”. 

> > Highlighted in Organic Chemistry Portal (http://www.organic-chemistry.org/)

 

213.    Constantin Mamat, Stefan Büttner, Tiana Trabhardt, Christine Fischer, Peter Langer*, J. Org. Chem. 2007, 72, 6273-6275.

“Synthesis of 5-Alkylsalicylates, 5-Alkyl-2-hydroxyacetophenones, and 5-Alkyl-2-hydroxybenzophenones by formal [3+3] Cyclization of 1,3-Bis(Silyl Enol Ethers) with 2-Alkyl-1,1,3,3-tetraethoxypropanes”.

 

212.    Ibrar Hussain, Van Thi Hong Nguyen, Mirza Arfan Yawer, Tuan Thanh Dang, Christine Fischer, Helmut Reinke, Peter Langer*, J. Org. Chem. 2007, 72, 6255-6258.

“Synthesis of Dibenzo[b,d]pyran-6-ones based on [3+3] Cyclizations of 1,3-Bis(Silyl Enol Ethers) with 3-Silyloxy-2-en-1-ones”.

 

211.    Peter Langer* in Electronic Encyclopedia of Reagents for Organic Synthesis (Ed.: L. A. Paquette), Wiley, New York,  2007, pp. 1-6

“2-Azido-1,1-dimethoxyethane”.

 

210.     Van T. H. Nguyen, Esen Bellur, Christine Fischer, Peter Langer*, Tetrahedron 2007, 63, 8037-8045.

“Synthesis of 2,5-Dihydrobenzo[b]oxepines and 5,6-Dihydro-2H-benzo[b]oxocines based on [3+3] Cyclizations of 1,3-Bis(Silyl Enol Ethers)”.

 

209.     Muhammad Sher, Zafar Ahmed, Muhammad A. Rashid, Christine Fischer, Anke Spannenberg, Peter Langer*, Tetrahedron 2007, 63, 4929-4936.

“Synthesis of Diaryl Ethers based on One-Pot [3+3] Cyclizations of 1,3-Bis(Silyl Enol Ethers)”.

 

208.     Uwe Albrecht, Peter Langer*, Tetrahedron 2007, 63, 4648-4654.

“Synthesis of Spirocyclic Butenolides by Ring Closing Metathesis”.

 

207.     Edith Holtz, Uwe Albrecht, Peter Langer*, Tetrahedron 2007, 63, 3293-3301.

“One-Pot Reactions of 2,4-(Dioxobutylidene)phosphoranes. Efficient Synthesis of 4-(2-Hydroxybenzoyl)salicylic Acid Derivatives and Buta-1,3-diene-1,4-dicarboxylates”.

 

206.     Andreas Schmidt, Jörg-Peter Gütlein, Satenik Mkrtchyan, Helmar Görls, Peter Langer*, Synlett 2007, 1305-1307.

„Synthesis of 7,8-Benzo-4-hydroxy-1,9-diazabicyclo[3.3.1]non-4-enes by Cyclization of 1,3-Bis(Silyl Enol Ethers) with Quinazolines”.

 

205.     Muhammad Sher, Helmut Reinke, Peter Langer*, Tetrahedron 2007, 63, 4080-4086.

“Synthesis of 4,5-Diaryl-1,2,3-benzenetricarboxylates by Reaction of 4-Hydroxycyclopent-2-en-1-one-2-carboxylates with Dimethyl Acetylenedicarboxylate”.

 

204.     Nguyen Van Duy, Carmen Wolf, Ulrike Mäder, Michael Lalk, Peter Langer, Ulrike Lindequist, Michael Hecker, Haike Antelmann*, Proteomics 2007, 7, 1391-1408.

“Transcriptome and proteome analyses in response to 2-methylhydroquinone and 6-brom-2-vinyl-chroman-4-on reveal different degradation systems involved in the catabolism of aromatic compounds in Bacillus subtilis”.

 

203.     Thomas Pundt, Matthias Lau, Ibrar Hussain, Mirza, A. Yawer, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2007, 48, 2745-2747.

One-Pot Synthesis of Aryl Fluorides by [3+3] Cyclization of 1,3-Bis(Silyl Enol Ethers) with 2-Fluoro-3-silyloxy-2-en-1-ones

 

202.     Muhammad A. Rashid, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2007, 48, 2321-2323.

„Regioselective Synthesis of Diaryl Sulfides by [3+3] Cyclizations of 1,3-Bis(Silyl Enol Ethers)”.

 

201.     Andreas Schmidt, Jörg-Peter Gütlein, Peter Langer*, Tetrahedron Lett. 2007, 48, 2067-2069.

“Synthesis of 6-Alkylidene-2,3-benzo-1,4-diaza-7-oxabicyclo[4.3.0]non-2-enes by Cyclization of 1,3-Bis(silyl enol ethers) with Quinoxalines”.

 

200.     Sven Rotzoll, Ehsan Ullah, Helmar Görls, Peter Langer*, Tetrahedron 2007, 63, 2647-2656.

“One-Pot Synthesis of 3-Hydroxymaleic Anhydrides by Cyclization of 1,1-Bis(trimethylsilyloxy)ketene Acetals with Oxalyl Chloride”.

 

199.     Peter Langer*, Eur. J. Org. Chem. 2007, 2233-2238.

“Synthesis of Bridged and Non-Bridged N-Heterocycles by Cyclocondensation of Bis(silyl enol ethers) with Iminium Salts” (Microreview).

 

198.     Tuan Thanh Dang, Tung Thanh Dang, Peter Langer*, Tetrahedron Lett. 2007, 48, 3591-3593.

“One-Pot Synthesis of Pyrazole-5-carboxylates by Cyclization of Hydrazone 1,4-Dianions with Diethyl Oxalate”.

 > > Highlighted in Synfacts 2007, 07, 0692

 

197.     Thomas Rahn, Van T. H. Nguyen, T. H. Tam Dang, Zafar Ahmed, Michael Lalk, Christine Fischer, Anke Spannenberg, Peter Langer*, J. Org. Chem. 2007, 72, 1957-1961.

“Synthesis of 1,3,5-Tricarbonyl Derivatives by Condensation of 1,3-Bis(Silyl Enol Ethers) with Carboxylic Acid Chlorides”.

 > > Highlighted in Organic Chemistry Portal (http://www.organic-chemistry.org/)

 

196.     Peter Langer*, Synlett 2007, 1016-1025.

“Domino Reactions of 1,3-Bis(Silyl Enol Ethers) with 4-(Trialkylsilyloxy)benzopyrylium Triflates” (account article).

 

195.     Tuan Thanh Dang, Nasir Rasool, Tung Thanh Dang, Helmut Reinke, Peter Langer*, Tetrahedron Lett. 2007, 48, 845-847.

“Synthesis of Tetraarylthiophenes by Regioselective Suzuki Cross-Coupling Reactions of Tetrabromothiophene”.

 

194.     Edith Holtz, Peter Langer*, Synth. Commun. 2007, 37, 2959-2966.

“Synthesis of 5-Cyano-1,3-dioxoalkanes by Reaction of 1,3-Dicarbonyl Dianions with Bromoacetonitrile”.

 

193.     Iyad Karamé,* Esen Bellur, Sven Rotzoll, Peter Langer, Christine Fischer, Jens Holz, Armin Börner*, Synth. Commun. 2007, 37, 1067-1076.

“Highly Enantioselective Hydrogenation of β-Alkyl and β-(w-Chloroalkyl) Substituted β-Keto Esters”.

 

192.     Anja Bodtke, Madeleine Kandt, Wolf-Diethard Pfeiffer, Peter Langer*, Phosphorus, Sulfur, Silicon & Related Elem. 2007, 182, 209-217.

„Synthesis of 4-Aryl-2-imino-2H-selenazolines by Cyclization of Amines with α-(Selenocyanato)acetophenones”.

 

191.     Ilia Freifeld, Gopal Bose, Tobias Eckardt, Peter Langer*, Eur. J. Org. Chem. 2007, 351-355.

„Synthesis of g-(4-Oxobut-2-en-1-ylidene)butenolides and g-(2-Oxobut-3-en-1-ylidene)butenolides based on [3+2] Cyclization of 1,5-Bis(trimethylsilyloxy)-1,3,5-hexatrienes and 2,4-Bis(trimethylsilyloxy)-1,3,5-hexatrienes with Oxalyl Chloride”.

 

190.     Holger Feist, Peter Langer*, Synthesis 2007, 327-347 (invited review).

“One-Pot Synthesis of Functionalized Carbacycles by Formal [3+3] Cyclizations of 1,3-Bis(silyl enol ethers) with 1,3-Dielectrophiles”.

 

189.     Mathias Lubbe, Constantin Mamat, Christine Fischer, Peter Langer*, Tetrahedron 2007, 63, 413-418.

„Synthesis of 6-(Perfluoroalkyl)salicylates by [3+3] Cyclization of 1,3-Bis(Silyl Enol Ethers) with 3-Ethoxy-1-(perfluoroalkyl)prop-2-en-1-ones”.

 

 

2006

 

188.     Peter Langer*, Synlett 2006, 3369-3381 (account article).

“Synthesis of Butenolides by One-Pot Cyclizations of Silyl Enol Ethers with Oxalyl Chloride”.

 

187.     Sven Rotzoll, Ehsan Ullah, Christine Fischer, Dirk Michalik, Anke Spannenberg, Peter Langer*, Tetrahedron 2006, 62, 12084-12091.

„Synthesis of 1,4-Diaza-7-oxabicyclo[4.3.0]non-2-en-6-ones by Cyclization of 1,1-Bis(trimethylsiloxy)ketene Acetals with Pyrazine and Quinoxaline”.

 

186.     Zafar Ahmed, Peter Langer*, Synlett 2006, 3361-3363.

„Synthesis of Functionalized Diaryl Ethers by [3+3] Cyclization of 1,3-Bis(Silyl Enol Ethers) with 2-Aryloxy-3-(silyloxy)alk-2-en-1-ones”.

 

185.     Gerson Mroß, Peter Langer*, Tetrahedron Lett. 2006, 47, 8519-8521.

„Synthesis of Functionalized Arylalkyl and Diaryl Ethers by [3+3] Cyclization of 3-Alkoxy- and 3-Aryloxy-1-siloxy-1,3-butadienes with 3-(Silyloxy)alk-2-en-1-ones “.

 

184.     Mathias Lubbe, Bettina Appel, Anke Flemming, Christine Fischer, Peter Langer*, Tetrahedron 2006, 62, 11755-11759.

„Synthesis of 7-Hydroxy-2-(2-hydroxybenzoyl)benzo[c]chromen-6-ones by Sequential Application of Domino Reactions of 1,3-Bis(Silyl Enol Ethers) with Benzopyrylium Triflates”.

 

183.     Tuan T. Dang, Tung T. Dang, Peter Langer*, Synlett 2006, 2812-2814.

“Synthesis of 2-(2-Arylethenyl)-5-arylfurans by Regioselective Palladium(0)-Catalyzed Coupling Reactions of 2-(2-Bromo-2-nitroethenyl)-5-bromofuran”.

 

182.     Gerson Mroß, Edith Holtz, Peter Langer*, J. Org. Chem. 2006, 71, 8045-8049.

“Synthesis of Functionalized Furans based on Feist-Benary-Cyclization of (2,4-Dioxobutylidene)phosphoranes with a-Haloketones and a-Chloracetaldehyde”.

 > > Highlighted in Synfacts 2007, 01, 0030

 

181.     Stefanie Reim, Matthias Lau, Peter Langer*, Tetrahedron Lett. 2006, 47, 6903-6905.

“Synthesis of Fluorenones based on a ′[3+3] Cyclization / Suzuki Cross-Coupling / Friedel-Crafts-Acylation′ Strategy“.

 

180.     Stefanie Reim, Mathias Lubbe, Peter Langer*, Tetrahedron Lett. 2006, 47, 6751-6752.

 “Synthesis of Phthalates and Isophthalates by [3+3] Cyclizations of 1,3-Bis(Silyl Enol Ethers) with 3-(Silyloxy)alk-2-en-1-ones“.

 

179.     Ehsan Ullah, Bettina Appel, Christine Fischer, Peter Langer*, Tetrahedron 2006, 62, 9694-9700.

„Synthesis of 7-Hydroxy-6H-benzo[c]chromen-6-ones based on a ′[3+3] Cyclization / Domino Retro-Michael-Aldol-Lactonization′ Strategy”.

 

178.     Stefanie Libnow, Martin Hein*, Dirk Michalik, Peter Langer*, Tetrahedron Lett. 2006, 47, 6907-6909.

“First Synthesis of Indirubin N-Glycosides (Red Sugars)”.

 

177.     Ilia Freifeld, Heydar Shojaei, Rüdiger Dede, Peter Langer*, J. Org. Chem. 2006, 71, 6165-6170.

“Domino ′Staudinger / Semi-Aza-Wittig / Fragmentation′ Reactions of γ-Azido-β-hydroxyketones”.

 

176.     Martin Hein*, Thi Bich Phuong Nguyen, Dirk Michalik, Helmar Görls, Michael Lalk, Peter Langer*, Tetrahedron Lett. 2006, 47, 5741-5745.

“Synthesis of the first Deprotected Indigo N-glycosides (Blue Sugars) by Reductive Glycosylation of Dehydroindigo”.

 

175.     Van Thi Hong Nguyen, Bettina Appel, Peter Langer*, Tetrahedron 2006, 62, 7674-7686.

“Synthesis of Chromanes by Double-Annulation Reactions of 1,3-Bis(trimethylsilyloxy)-7-chlorohepta-1,3-dienes”.

 

174.     Anja Bodtke, Helmut Reinke, Dirk Michalik, Peter Langer*, Tetrahedron 2006, 62, 7653-7660.

„Synthesis of 2-Oxo-2,3,5,6-tetrahydro-5-thioxoimidazo[1,2-c]quinazolines by One-Pot Cyclization of a-Aminocarboxylic Esters with 2-(Isothiocyanato)benzonitrile (ITCB)”.

 

173.     Uwe Albrecht, Helmut Reinke, Peter Langer*, Synthesis 2006, 3067-3074.

„One-Pot Cyclization of Carbon Nucleophiles with 2-(Isothiocyanato)benzonitrile (ITCB). Synthesis of 2-Alkylidene-3,4-dihydro-4-thioxo-2(1H)quinazolines”.

 

172.     Van Thi Hong Nguyen, Esen Bellur, Bettina Appel, Peter Langer*, Synthesis 2006, 2865-2872.

“Synthesis of 4-Alkyl- and 4-(w-Chloroalkyl)-3-hydroxy-5-alkylidenebutenolides based on Cyclizations of 4-Alkyl- and 4-(w-Chloroalkyl)-1,3-bis(trimethylsilyloxy)buta-1,3-dienes with Oxalyl Chloride”.

 

171.     Ilia Freifeld, Heydar Shojaei, Peter Langer*, J. Org. Chem. 2006, 71, 4965-4968.

“Synthesis of 2-Alkylidenepyrrolidines and Pyrroles by Condensation of 1,3-Dicarbonyl Dianions with a-Azidoketones and subsequent Intramolecular Staudinger-Aza-Wittig-Reaction”.

 

170.     Ilia Freifeld, Edith Holtz, Georg Dahmann, Peter Langer*, Eur. J. Org. Chem. 2006, 3251-3258.

“Diversity-Oriented Synthesis of 2,5-Disubstituted Tetrahydrofurans based on a 'Cyclization-Hydrogenation-Substitution' Strategy”.

 

169.     Esen Bellur, Ilia Freifeld, Dominique Böttcher, Uwe Bornscheuer, Peter Langer*, Tetrahedron 2006, 62, 7132-7139.

“Synthesis of (Tetrahydrofuran-2-yl)acetates based on a ′Cyclization / Hydrogenation / Enzymatic Kinetic Resolution′ Strategy”.

 

168.     Thomas Emmrich, Helmut Reinke and Peter Langer*, Synthesis 2006, 2551-2555.

“Synthesis of 4-Hydroxy-2-(arylsulfonyl)pyridines by Hetero-Diels-Alder Reaction of 1,3-Bis-Silyl Enol Ethers with Arylsulfonylcyanides”.

 

167.     Zafar Ahmed, Christine Fischer, Anke Spannenberg, Peter Langer*, Tetrahedron 2006, 62, 4800-4806.

“Synthesis of Functionalized p-Dihydrobenzoquinones and p-Benzoquinones based on [3+3] Cyclizations of 1,3-Bis-Silyl Enol Ethers“.

 

166.     Uwe Albrecht, Ilia Freifeld, Helmut Reinke, Peter Langer*, Tetrahedron 2006, 62, 5775-5786.

“One-Pot Cyclization of Dilithiated Nitriles with Isothiocyanates and Epibromohydrin. Synthesis of 2-Cyano-1-(hydroxymethyl)cyclopropanes and 2-Cyanomethylidene-4-(hydroxymethyl)thiazolidines”.

 

165.     Falko Helmholz, Rita Schroeder, Peter Langer*, Synthesis 2006, 2507-2514.

“Synthesis of Unsymmetrical Pyrrolo[3,2-b]pyrrole-2,5-diones and Bis(quinazolin-4-on-2-yls) by Double-Anion-Capture-Reactions of Unsymmetrical Oxaldi(arylimidoyl) dichlorides”.

 

164.     Bettina Appel, Sven Rotzoll, Helmut Reinke and Peter Langer* Eur. J. Org. Chem. 2006, 3638-3644.

 “Domino ′Michael-Retro-Michael-Mukaiyama-Aldol′ Reactions of 1,3-Bis-Silyl Enol Ethers with 3-Acyl- and 3-Formylbenzopyrylium Triflates.  Synthesis of Functionalized 2,4¢-Dihydroxybenzophenones”.

 

163.     Gopal Bose, Karin Bracht, Patrick J. Bednarski, Michael Lalk*, Peter Langer*, Bioorg. Med. Chem. 2006, 14, 4694-4703.

“Synthesis, Reactions and Structure-Activity Relationships of 1-Hydroxyspiro[2.5]cyclooct-4-en-3-ones. Illudin Analogs with in vitro Cytotoxic Activity”.

 

162.     Tuan Thanh Dang, Uwe Albrecht, Peter Langer*, Synthesis 2006, 2515-2522.

“Synthesis of Isoxazole-5-carboxylates by Cyclization of Oxime 1,4-Dianions with Diethyl Oxalate”.

 

161.     Esen Bellur, Peter Langer*, Tetrahedron Lett. 2006, 47, 2151-2154.

"Synthesis of Functionalized Pyrroles and 6,7-Dihydro-1H-indol-4(5H)-ones by Reaction of 1,3-Dicarbonyl Compounds with 1-Azido-2,2-diethoxyethane".

 

160.       Esen Bellur, Dominique Böttcher, Uwe Bornscheuer*, Peter Langer*, Tetrahedron: Asymmetry 2006, 17, 892-899.

“Enantioselective Synthesis of 2-Alkylidenetetrahydrofurans based on a ′Cyclization / Enzymatic Resolution′ Strategy”.

 

159.       Esen Bellur, Helmar Görls, Peter Langer*, J. Org. Chem. 2006, 71, 2332-2338.

“Domino Reactions of 1,2-Diimidoyl-1,2-dichloroethanes. Synthesis of 3-Imino-1,2-dithia-3H-cyclopent-4-enes, 3-Amino-2-thioxo-2,5H-pyrrol-5-ones, 2,3-Diamino-4-thioxo-4H-thiopyrans and 6-Imino-6H-1,3-oxazines”.

 

158.       Ilia Freifeld, Holger Armbrust, Peter Langer*, Synthesis 2006, 1807-1810.

“Synthesis of 5-(Hydroxymethyl)pyrrolidin-2-ones by Cyclization of Amide Dianions with Epibromohydrin”.

 > > Highlighted in Organic Chemistry Portal (http://www.organic-chemistry.org/)

 

157.       Constantin Mamat, Thomas Pundt, Andreas Schmidt, Peter Langer*, Tetrahedron Lett. 2006, 47, 2183-2185.

“Regioselective Synthesis of 2-Acetyl- and 2-Alkoxycarbonyl- 3-(trifluoromethyl)phenols by [3+3] Cyclization of 1,3-Bis-Silyl Enol Ethers with 4-Ethoxy- and 4-Silyloxy-1,1,1-trifluoroalk-3-en-2-ones”.

 

156.       Nina Todorovic, Nguyen Thi Bich Phuong, Peter Langer*, Klaus Weisz*, Bioorg. Med. Chem. Lett. 2006, 16, 1647-1650.

“DNA-triplex stabilization by a d-carboline derivative tethered to third-strand oligonucleotides”.

 

155.      Tuan Thanh Dang, Uwe Albrecht, Katrin Gerwien, Melanie Siebert, Peter Langer*, J. Org. Chem. 2006, 71, 2293-2301.

“One-Pot Cyclizations of Dilithiated Oximes and Hydrazones with Epibromohydrin. Efficient Synthesis of 6-Hydroxymethyl-5,6-dihydro-4H-1,2-oxazines and Oxazolo[3,4-b]pyridazin-7-ones”.

 

154.     Zafar Ahmed, Peter Langer*, Tetrahedron Lett. 2006, 47, 417-419.

“Synthesis of Functionalized 4-Chlorophenols and 1,4-Dihydroquinones by [3+3] Cyclization of 1,3-Bis-Silyl Enol Ethers with 2-Chloro- and 2-Acyloxy-3-(silyloxy)alk-2-en-1-ones”.

 

153.       Zafar Ahmed, Peter Langer*, Eur. J. Org. Chem. 2006, 1057-1060.

“Synthesis Defunctionalization of α-Hydroxy-γ-alkylidenebutenolides by Palladium(0) Catalyzed Reaction of Enol Triflates with Hexylboronic Acid”.

 

152.       Uwe Albrecht, Van Thi Hong Nguyen, Peter Langer*, Synthesis 2006, 1111-1116.

“Synthesis of g-(2,4-Dioxobut-1-ylidene)butenolides by Reaction of Masked 1,3-Dicarbonyl Dianions with Maleic Anhyrides and Phthaloyl Dichloride”.

 

151.       Esen Bellur, Peter Langer*, Tetrahedron 2006, 62, 5426-5434.

“Synthesis of 4-(3′-Hydroxyalkyl)pyrimidines by Ring Transformation Reactions of 2-Alkylidenetetrahydrofurans with Amidines”.

 

150.  Van Thi Hong Nguyen, Esen Bellur, Bettina Appel, Peter Langer*, Synthesis 2006, 1103-1110.

“Synthesis of 3-Alkyl- and 3-Chloroalkyl-2-hydroxybenzoates based on [3+3] Cyclizations of 4-Alkyl- and 4-Chloroalkyl-1,3-bis(trimethylsilyloxy)buta-1,3-dienes”.

 

149.     Esen Bellur, Peter Langer*, Synthesis 2006, 480-488.

“Chemo- and Regioselective Synthesis of Functionalized Furans based on a ′[3+2] Cyclization / Bromination / Elimination′ Strategy”

 

148.     Van Thi Hong Nguyen, Esen Bellur, Peter Langer*, Tetrahedron Lett. 2006, 47, 113-116.

“Synthesis of 2,5-Dihydrobenzo[b]oxepines and 5,6-Dihydro-2H-benzo[b]oxocines based on a ′[3+3] Cyclization−Olefin-Metathesis′ Strategy”.

 

147.     Bettina Appel, Nehad N. R. Saleh, Peter Langer*, Chem. Eur. J. 2006, 12, 1221-1236.

“Domino Reactions of 1,3-Bis-Silyl Enol Ethers with Benzopyrylium Triflates. Efficient Synthesis of fluorescent 6H-Benzo[c]chromen-6-ones, Dibenzo[c,d]chromen-6-ones and 2,3-Dihydro-1H-4,6-dioxachrysen-5-ones”.

 

 

2005

 

146.     Martin Hein*, Dirk Michalik, Peter Langer*, Synthesis 2005, 20, 3531-3534.

“First Synthesis of N-Indigoglycosides - Analogues of Cancerostatic Akashines“.

 

145.       Falko Helmholz, Rita Schroeder and Peter Langer*, Z. Naturforsch. B 2005, 60b, 1192-1196.

“Synthesis of Unsymmetrical Bis(imidoyl)dichlorides of Oxalic Acid”.

 

144.      Ehsan Ullah, Sven Rotzoll, Andreas Schmidt, Dirk Michalik, Peter Langer*, Tetrahedron Lett. 2005, 46, 8997-8999.

“Synthesis of 7,8-Benzo-9-aza-4-oxabicyclo[3.3.1]nonan-3-ones by Sequential ′Condensation-Iodolactonization′ Reactions of 1,1-Bis(trimethylsilyloxy)ketene Acetals with Isoquinolines”.

 

143.       Esen Bellur, Peter Langer*, J. Org. Chem. 2005, 70, 10013-10029.

“Efficient Synthesis of (Furan-2-yl)acetates, 7-(Alkoxycarbonyl)benzofurans and 7-(Alkoxycarbonyl)-2,3-dihydrobenzofurans based on Cyclization Reactions of Free and Masked Dianions: a ′[3+2] Cyclization / Dehydrogenation′ Strategy.”

 

142.     Stefanie Reim, Van Thi Hong Nguyen, Uwe Albrecht and Peter Langer*, Tetrahedron Lett. 2005, 46, 8423-8425.

 “Synthesis of 3,5-Dioxopimelates and 2,4-Dioxoadipates by Acylation of 1,3-Bis-Silyl Enol Ethers”.

 

141.     Rüdiger Dede, Lars Michaelis, Peter Langer*, Tetrahedron Lett. 2005, 46, 8129-8131.

“Regioselective Synthesis of Isotetronic Acids by Cyclization of 1,3-Bis(trimethylsilyloxy)alk-1-enes with Oxalyl Chloride”.

 > > Highlighted in Synlett 2007, 1172 (Synlett Spotlight 195)

 

140.       Anja Bodtke, Wolf-Diethard Pfeiffer,* Norbert Ahrens, Peter Langer*, Tetrahedron 2005, 61, 10926-10929.

“Horseradish Peroxidase (HRP) Catalyzed Oxidative Coupling Reactions using Aqueous Hydrogen Peroxide: An Environmentally Benign Procedure for the Synthesis of Azine Pigments”.

 

139.     Ehsan Ullah and Peter Langer*, Synthesis 2005, 3189-3190.

“Synthesis of Pyran-2-ones by Reaction of 1,1-Bis(trimethylsilyloxy)ketene Acetals with 3-Silyloxyalk-2-en-1-ones”.

 

138.     Esen Bellur, Peter Langer*, J. Org. Chem. 2005, 70, 7686-7693.

“Synthesis of Benzofurans with Remote Bromide Functionality Domino ‘Ring-Cleavage-Deprotection-Cyclization’ Reactions of 2-Alkylidenetetrahydrofurans with Boron Tribromide”.

 

137.     Esen Bellur, Peter Langer*, Eur. J. Org. Chem. 2005, 4815-4828.

“Synthesis of Functionalized 2-Alkylidenetetrahydrofurans based on a ′[3+2] Cyclization / Bromination / Palladium(0)-Cross-Coupling′ Strategy”.

 

136.     Andreas Schmidt, Jörg-Peter Gütlein, Anja Preuss, Uwe Albrecht and Peter Langer*, Synlett 2005, 2489-2491.

“Synthesis of 7,8-Benzo-3-hydroxy-9-azabicyclo[3.3.1]non-3-enes by Cyclocondensation of 1,3-Bis-Silyl Enol Ethers with Isoquinoline”.

 

135.     Harald Below,* Wolf-Diethard Pfeiffer, Karlheinz Geisler, Michael Lalk and Peter Langer*, Eur. J. Org. Chem. 2005, 3637-3639.

“1,3-Selenazole”.

 

134.       Peter Langer,* Anja Bodtke, Nehad N. R. Saleh, Peter R. Schreiner*, Angew. Chem. 2005, 117, 5389-5393; Angew. Chem. Int. Ed. 2005, 44, 5255-5259.

“3,5,7,9-Tetraphenylhexaazaacridine: A Highly Stable, weakly Antiaromatic Species with 16 π-Electrons”.

> > Highlighted in Nachr. Chem. 2005, 54, 241 (Trendberichte Organische Chemie 2005)

> > Highlighted in Synfacts 2005, 02, 0204

 

133.      Uwe Albrecht, Dirk Gördes, Enrico Schmidt, Kerstin Thurow, Michael Lalk, Peter Langer*, Bioorg. Med Chem. 2005, 13, 4402-4407.

“Synthesis and Structure-Activity Relationships of 2-Alkylidenethiazolidine-4,5-diones as Potent Antibiotic Agents”.

 

132.     Sven Rotzoll, Bettina Appel and Peter Langer*, Tetrahedron Lett. 2005, 46, 4057-4059.

“Synthesis of 2,3-Benzoxepins by Sequential Cyclopropanation / Ring-Enlargement Reactions of Benzopyrylium Triflates with Diazoesters”.

 

131.       Zafar Ahmed, Uwe Albrecht, Peter Langer*, Eur. J. Org. Chem. 2005, 3469-3474.

“Synthesis of Leprapinic Acid, Calycine and Analogues by Sequential ‘[3+2]-Cyclization / Suzuki / Lactonization’ Reactions”.

 

130.       Sabine Ciecholewski, Elke Hammer,* Katrin Manda, Gopal Bose, Van T. H. Nguyen, Peter Langer*, Frieder Schauer, Tetrahedron 2005, 61, 4615-4619.

“Laccase-Catalyzed Carbon-Carbon Bond Formation: Oxidative Dimerization of Salicylic Esters by Air in Aqueous Solution”.

 

129.       Gopal Bose, Peter Langer*, Synlett 2005, 1021-1023.

“Synthesis of Linderone and Lucidone based on One-Pot Cyclizations of 1,3-Bis-Silyl Enol Ethers with Oxalyl Chloride”.

 

128.       Esen Bellur, Ilia Freifeld, Peter Langer*, Tetrahedron Lett. 2005, 46, 2185-2187.

“Efficient Synthesis of Functionalized Furans and Benzofurans based on a ′[3+2] Cyclization / Oxidation′ Strategy”.

 

127.       Esen Bellur, Helmar Görls and Peter Langer*, J. Org. Chem. 2005, 70, 4751-4761.

“Synthesis of 2-Alkylidenepyrrolidines, Pyrroles and Indoles by Condensation of Silyl Enol Ethers and 1,3-Bis-Silyl Enol Ethers with 1-Azido-2,2-dimethoxyethane and subsequent Reductive Cyclization”.

 

126.       Zafar Ahmed and Peter Langer*, Tetrahedron 2005, 61, 2055-2063.

“Synthesis of Natural Pulvinic Acids based on a ′[3+2] Cyclization−Suzuki Cross-Coupling′ Strategy”.

 

125.       Uwe Albrecht, Michael Lalk* and Peter Langer*, Bioorg. Med. Chem. 2005, 13, 1531-1536.

“Synthesis and Structure-Activity Relationships of 2-Vinylchroman-4-ones as Potent Antibiotic Agents”.

 

124.       Esen Bellur, Helmar Görls and Peter Langer*, Eur. J. Org. Chem. 2005, 2074-2090.

“Regioselective Synthesis of Functionalized Furans by Cyclization of 1,3-Bis-Silyl Enol Ethers with 1-Chloro-2,2-dimethoxyethane”.

 

123.       Uwe Albrecht, Katrin Gerwien and Peter Langer*, Tetrahedron Lett. 2005, 46, 1017-1019.

“Synthesis of 6-Hydroxymethyl-5,6-dihydrooxazines by One-Pot-Cyclization of Dilithiated Oximes with Epibromohydrin”.

 

122.       Van Thi Hong Nguyen and Peter Langer*, Tetrahedron Lett. 2005, 46, 1013-1015.

“Synthesis of Dibenzo[b,d]pyran-6-ones based on a ‘[3+3]-Cyclization−Suzuki-Cross-Coupling’ Strategy”.

 

121.       Van Thi Hong Nguyen and Peter Langer*, Tetrahedron Lett. 2005, 46, 815-817.

“Synthesis of Functionalized Benzopyrans by Sequential [3+3]-Cyclization−Williamson Reactions of 1,3-Bis(trimethylsilyloxy)-7-chlorohepta-1,3-dienes”.

 

120.       Christian Haase and Peter Langer*, Synlett 2005, 453-456.

“Efficient Preparation of 5-Alkylidene-2,5-dihydropyrrol-2-ones by Ring-Transformations of γ-Alkylidenebutenolides. Formal Total Synthesis of Pukeleimide A”.

 

119.       Edith Holtz, Valentin Köhler, Bettina Appel and Peter Langer,* Eur. J. Org. Chem 2005, 532-542.

“Efficient Synthesis of Functionalized 4-Hydroxycyclopent-2-en-1-ones by Cyclization of 1,3-Bis-Silyl Enol Ethers and 1,3-Dicarbonyl Dianions with 1,2-Diketones”.

 

118.       Esen Bellur, Peter Langer*, J. Org. Chem. 2005, 70, 3819-3825.

“Synthesis of ε-Halo-β-ketoesters and γ,γ′-Dibromoalkanones by Regio- and Chemoselective Reaction of 2-Alkylidenetetrahydrofurans with Borontrihalides: A ′Ring-Closure / Ring-Cleavage′ Strategy”.

 

2004

 

117.       Gopal Bose, Van Thi Hong Nguyen, Ehsan Ullah, Sunanda Lahiri, Helmar Görls and Peter Langer*, J. Org. Chem. 2004, 69, 9128-9134.

“Domino ′[3+3]-Cyclization-homo-Michael′ Reactions of 1,3-Bis-Silyl Enol Ethers with 1,1-Diacylcyclopropanes”.

 

116.       Gopal Bose, Ehsan Ullah and Peter Langer*, Chem. Eur. J. 2004, 10, 6015-6028.

“Synthesis of Spiro[5.4]decenones and their Transformation into Bicyclo[4.4.0]deca-1,4-dien-3-ones by Domino ′Elimination–Double-Wagner-Meerwein-Rearrangement′ Reactions”.

 

115.       Rüdiger Dede and Peter Langer*, Tetrahedron Lett. 2004, 45, 9177-9179.

“Regioselective Synthesis of Functionalized Acetophenones by [3+3] Cyclizations of 1,3-Bis-Silyl Enol Ethers with 2-Acetyl-1-silyloxybut-1-en-3-one”.

 

114.       Ehsan Ullah and Peter Langer*, Synlett 2004, 2782-2784.

“One-Pot Synthesis of 3-Hydroxymaleic Anhydrides by Cyclization of 1,1-Bis(trimethylsilyloxy)ketene Acetals with Oxalyl Chloride”.

> > Highlighted in Synlett 2007, 1172 (Synlett Spotlight 195)

 

113.       Joachim T. Anders, Van Thi Hong Nguyen and Peter Langer,* Synlett 2004, 2779-2781.

“Efficient Synthesis of Functionalized 2-Carbamoylpyran-4-ones by Ring-Transformation of 5-Alkylidene-2,5-dihydropyrrol-2-ones”.

 

112.       Anja Bodtke and Peter Langer*, Tetrahedron Lett. 2004, 45, 8741-8743.

“Efficient Synthesis of Tricyclic Quinazolines by One-Pot Cyclizations of 2-(Dichloroisocyanido)benzonitrile”.

 

111.       Joachim T. Anders and Peter Langer*, Eur. J. Org. Chem. 2004, 5020-5026.

“Domino ′Cyclization-Electrocyclization-Elimination′ Reactions of Arylmethylnitriles with Oxalic Acid-bis(naphthylimidoyl) Dichlorides: Efficient Synthesis of Fluorescent 7H-Benzo[g]indolino[3,2-b]benzo[h]quinolines”.

 

110.       Uwe Albrecht and Peter Langer*, Synlett 2004, 2200-2202.

„Synthesis of 2-Alkylidene-4-(hydroxymethyl)thiazolidines by One-Pot Cyclization of Dilithiated Arylmethylnitriles with Isothiocyanates and Epibromohydrin”

 

109.       Steven Collier, Peter Langer, Science of Synthesis (Shinkai, I.; Murahashi, S., eds.), Chapter 19.5.15, Thieme, Stuttgart: 2004.

“Applications of Nitriles as Reagents for Organic Synthesis with Loss of the Nitrile Functionality (incl. cycloaddition reactions)”.

 

108.       Anett Kirschner, Peter Langer*, Uwe T. Bornscheuer*, Tetrahedron: Asymmetry 2004, 15, 2871-2874.

“Lipase-catalyzed highly enantioselective kinetic resolution of racemic α-hydroxy butenolides”.

 

107.       Esen Bellur and Peter Langer*, Synlett 2004, 2172-2174.

“Reaction of 2-Alkylidenetetrahydrofurans with Borontribromide: Chemo- and Regioselective Synthesis of 6-Bromo-3-oxoalkanoates by Application of a ′Cylization-Ring-Opening′ Strategy”.

 

106.       Uwe Albrecht and Peter Langer*, Synlett 2004, 1963-1964.

“Synthesis of 2-Alkylidenethiazolidine-4,5-diones and 2-Alkylideneoxazolidine-4,5-diones by One-Pot Cyclization of Arylacetonitriles with Heterocumulenes and Ethyl 2-Chloro-2-oxoacetate”.

 

105.       Peter Langer*, Walter Freiberg, Chem. Rev. 2004, 104, 4125-4149.

“Cyclization Reactions of Dianions in Organic Synthesis”.

 

104.    Edith Holtz and Peter Langer*, Synlett 2004, 1805-1807.

“Synthesis of 2-Alkenyl-3-alkoxycarbonylfurans by ¢Feist-Benary-Cyclocondensation¢ of (2,4-Dioxobutylidene)phosphoranes with Chloroacetaldehyde and subsequent Wittig Reactions”.

 

103.     Esen Bellur and Peter Langer*, Synlett 2004, 2169-2171.

“Functionalization of 2-Alkylidenetetrahydrofurans and 2-Alkylidenepyrrolidines by Palladium(0)-Catalyzed Cross-Coupling-Reactions”.

 

102.     Gopal Bose and Peter Langer*, Tetrahedron Lett. 2004, 3861-3863.

“Synthesis and Reactivity of 1-Hydroxyspiro[2.5]cyclooct-4-en-3-ones”.

 

101.       Uwe Albrecht, Thi Hong Van Nguyen and Peter Langer*, J. Org. Chem. 2004, 69, 3417-3424.

“Synthesis of 4,5-Benzotropones by Cyclization of 1,3-Bis-Silyl Enol Ethers with 1,2-Dialdehydes”.

 

100.     Zafar Ahmed, Peter Langer*, J. Org. Chem. 2004, 69, 3753-3757.

“Suzuki Cross Coupling Reactions of γ-Alkylidenebutenolides: Application to the Synthesis of Vulpinic Acid”.

 

99.       Joachim T. Anders, Helmar Görls, Peter Langer*, Eur. J. Org. Chem. 2004, 1897-1910.

„Synthesis of N-Aryl-5-alkylidene-2,5-dihydropyrrol-2-ones by ′Cyclization–Dimroth-Rearrangement′ Reactions of 1,3-Dicarbonyl Dianions with Bis(imidoyl)dichlorides of Oxalic Acid”.

 

98.       Anja Bodtke, Wolf-Diethard Pfeiffer*, Norbert Ahrens, Peter Langer*, Bioorg. Med. Chem. Lett. 2004, 14, 1509-1511.

„Peroxidase Catalyzed Formation of Azine Pigments – A Convenient and Sensitive Method for the Identification of Human Cells with Positive Peroxidase Reactivity“.

 

97.       Karlheinz Geisler*, Wolf-Diethard Pfeiffer, Andreas Künzler, Harald Below, Ehrenfried Bulka, Peter Langer*, Synthesis 2004, 875-884.

„Synthesis of 1,3-Selenazoles and Bis(selenazoles) from Primary Selenocarboxylic Amides and Selenourea”.

 

96.       Peter Langer* and Rita Schröder, Eur. J. Org. Chem. 2004, 1025-1032.

„Synthesis of 2-Arylamino-2-aryliminoacetic amides”.

 

95.       Karlheinz Geisler*, Andreas Künzler, Ehrenfried Bulka, Wolf-Diethard Pfeiffer and Peter Langer*, Synthesis 2004, 97-105.

„Synthesis and Reactivity of 2-Acyl-1,3-selenazoles”.

 

94.       Uwe Albrecht and Holger Armbrust, Peter Langer*, Synlett 2004, 143-145.

“Synthesis of Unsymmetrical Tropanes by Domino Cyclization of 1,3-Bis-Silyl Enol Ethers with Iminium Salts”.

 

2003

 

93.           U. T. Bornscheuer, A. Musidlowska-Persson, D. Böttcher, K. Liebeton, P. Lorenz, J. Eck, H. Zinke, C. Schleper, P. Langer, H. Trauthwein, A. Karau, S. Buchholz, Transkript 2003, 9, 81-84.

„Esterasen und Lipasen aus kultivierten und nicht-kultivierten Mikroorganismen“.

 

92.       Peter Langer*, Ilia Freifeld, Heydar Shojaei, Chem. Commun. 2003, 3044-3045.

„Domino 'Staudinger–Aza-Wittig–1,5-Phosphonium-Rearangement–Fragmentation' Reactions of 1-Azido-2-hydroxy-4,6-dioxohexanes”.

 

91.       Peter Langer*, Falko Helmholtz, Rita Schröder, Synlett 2003, 2389-2391.

„Synthesis of Unsymmetrical Pyrrolo[3,2-b]pyrrole-2,5-diones”.

 

90.       Wolf-Diethard Pfeiffer*, Erich Dilk, Harald Roßberg and Peter Langer*, Synlett 2003, 2392-2394.

„Synthesis and Reactivity of 3,4-Dimethyl-4H-1,3,4-thiadiazines”.

 

89.       Peter Langer* and Esen Bellur, J. Org. Chem. 2003, 68, 9742-9746.

Chemo-, Regio- and E/Z-Diastereoselective Synthesis of 2-Alkylidenetetrahydrofurans by Sequential Reactions of Ambident Dianions and Monoanions”.

 

88.       Peter Langer* and Bettina Appel, Tetrahedron Lett.  2003, 7921-7923.

Domino Michael-Retro-Michael-Aldol¢ Reactions of 1,3-Bis-Silyl Enol Ethers with 3-Formylchromones”.

 

87.       Peter Langer* and Anja Bodtke, Synlett 2003, 1743-1745.

„Domino Cyclization of 2-Isothiocyanatobenzonitrile with α-Aminocarboxylic Esters and Acids”.

 

86.       Peter Langer* and Anja Bodtke, Tetrahedron Lett. 2003, 5965-5967.

„Sequential Cyclizations of 2-Isothiocyanatobenzonitrile with α-Aminoketones”.

 

85.       Peter Langer* and Gopal Bose, Angew. Chem. 2003, 115, 4165-4168; Angew. Chem. Int. Ed. 2003, 42, 4033-4036.

„[3+3] Cyclizations of 1,3-Bis-Silyl Enol Ethers with 1,1-Diacetylcyclopentane and 1,1-Diacetylcyclopropane”.

 

84.       Peter Langer* and Uwe Albrecht, Synlett 2003, 1503-1505.

„Regioselective Cyclization of 2-Isothiocyanatobenzonitrile with Carbon 1,1-Dinucleophiles”.

 

83.       Karlheinz Geisler*, Andreas Künstler, Ehrenfried Bulka, Wolf-Diethard Pfeiffer and Peter Langer*, Synlett 2003, 1195-1197.

„Efficient Synthesis of 2-Unsubstituted 1,3-Selenazoles”.

 

82.       Peter Langer* and Bettina Appel, Tetrahedron Lett. 2003, 5133-5135.

„Efficient Synthesis of Benzopyrano[2,3-b]pyridines by Cyclization of 1,3-Bis-Silyl Enol Ethers with 3-Cyanobenzopyran-4-ones”.

 

81.       Karlheinz Geisler*, Wolf-Diethard Pfeiffer, Cornelia Müller, Elvira Nobst, Ehrenfried Bulka, and Peter Langer*, Synthesis 2003, 1215-1220.

„Synthesis and Functionalization of 4-Halomethyl-1,3-selenazoles“.

 

80.       Peter Langer*, Joachim T. Anders, Judith Jähnchen, Klaus Weisz, Chem. Eur. J. 2003, 9, 3951-3964.

„Efficient Synthesis of 2-Alkylidene-3-iminoindoles, Indolo[1,2-b]isoquinolin-5-ones, d-Carbolines  and Indirubines by Domino and Sequential Reactions of Functionalized Nitriles”.

 

79.       Peter Langer*, Dietmar Seyferth and Helmar Görls, Eur. J. Org. Chem. 2003, 1948-1953.

„Synthesis of Nitrile Oligomers by Multiple Anion Capture Reactions of Allene Dianions”.

 

78.       Peter Langer* in Organic Synthesis Highlights V (H.-G. Schmalz, T. Wirth, Eds.), Wiley-VCH 2003, 165 – 177.

„The Asymmetric Baylis-Hillman-Reaction“.

 

77.       Peter Langer* and Edith Holtz, Synlett 2003, 402 – 404.

„Domino 'Michael-Retro-Michael-Wittig' Reactions of (2,4-Dioxobutylidene)-phosphoranes with 3-Formylchromones”.

 

76.       Janet Blank, Madeleine Kandt, Wolf-Diethard Pfeiffer*, Annemarie Hetzheim, and Peter Langer*,  Eur. J. Org. Chem. 2003, 182-189.

„Domino Cyclization of 2-Isothiocyanatobenzonitrile with Carboxylic Hydrazides – One-Pot Synthesis of 5-Thioxo-5,6-dihydro-1,2,4-triazolo[1,5-c]quinazolines“.

 

 

2002

 

75.       Karlheinz Geisler*, Anke Jacobs, Andreas Künstler, Manuela Mattes, Ilona Girrleit, Brigitte Zimmermann, Ehrenfried Bulka, Wolf-Diethard Pfeiffer, and Peter Langer*, Synlett 2002, 1983-1986.

„Efficient Synthesis of Primary Selenocarboxylic Amides by Reaction of Nitriles with Phosphorous(V)selenide”.

 

74.       Peter Langer*, Ilia Freifeld, Chem. Commun. 2002, 2668-2669.

„Efficient and Regioselective Synthesis of Functionalized Pyrroles by Cyclocondensation of 1,3-Dicarbonyl Dianions with a-Azidoketones”.

 

73.       Peter Langer*, Uwe Albrecht, Synlett 2002, 1841-1842.

„Synthesis of Spirocyclic Butenolides by a Ring Closing Metathesis Strategy“.

 

72.       Peter Langer*, Nehad N. R. Saleh, Valentin Köhler, Eur. J. Org. Chem. 2002, 1566-1572.

„Synthesis of γ-Lactones and Ascorbic Acid Analogues by Diastereoselective Hydrogenation of α-Hydroxy-γ-alkylidenebutenolides“.

 

71.       Fritz Scholz*, Rubin Gulaboski, Valentin Mirceski, Peter Langer, Electrochem. Comm. 2002, 4, 659-662.

„Quantification of the chiral recognition in electrochemically driven ion transfer across the interface water / chiral liquid“.

 

70.       Peter Langer*, Joachim T. Anders, Eur. J. Org. Chem. 2002, 686-691.

„Synthesis of Bis- and Tris(indolinylidenemethyl)benzenes by One-Pot Reactions of Polylithiated Nitriles with Bis(imidoyl)chlorides of Oxalic Acid”.

 

69.       Peter Langer*, Synthesis 2002 (invited Review), 441-459.

„Cyclization Reactions of 1,3-Bis-Silyl Enol Ethers and Related Masked Dianions”.

 

68.       Peter Langer*, Manfred Döring, Eur. J. Org. Chem. 2002 (invited Review), 221-234.

„Efficient Synthesis of Nitrogen Heterocycles by Cyclization of Bis(nucleophiles) with Oxaldiimidoyl Dichlorides”.

 

67.       Peter Langer*, Nehad N. R. Saleh and Ilia Freifeld, Chem. Commun. 2002, 168-169.

„Efficient Synthesis of Biaryl Lactones by Domino Retro-Michael—Aldol—Lactonization Reactions of Functionalized 2,3-Dihydrobenzopyrans”.

 

66.       Peter Langer*, Edith Holtz, Synlett 2002, 110-112.

„Olefin Cross-Metathesis of Alkenyl Epoxides with Allyl- and Vinyltrimethylsilane”.

 

65.       Peter Langer*, Holger Armbrust, Tobias Eckardt and Jörg Magull, Chem. Eur. J. 2002, 8, 1443-1455.

„Synthesis of Functionalized 2-Alkylidenetetrahydrofurans by Cyclization of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Epoxides”.

 

64.       Peter Langer*, Edith Holtz and Nehad N. R. Saleh, Chem. Eur. J.  2002, 8, 917-928.

„Efficient and Stereoselective Synthesis of Bicyclo[3.2.1]octan-8-ones — Synthesis and Palladium-catalyzed Isomerization of Functionalized 2-Vinyl-2,3,3a,4,5,6-hexahydro-2,3-benzofurans”.

 

 

2001

 

63.       Peter Langer*, Ilia Freifeld, Org. Lett. 2001, 3903-3905.

„Chemo-, Regio- and Diastereoselective Synthesis of Functionalized Cyclopropyl Nitriles by Cyclization of 1,1-Dianions with Epibromohydrin”.

 

62.       Peter Langer*, Bettina Kracke, Synlett 2001, 1790-1792.

„Regio- and Diastereoselective Synthesis of Functionalized Cyclopentenones by Domino Michael-Ester-Wittig Reactions of (3-Alkoxycarbonyl-2-oxopropylidene)triphenyl phosphoranes with Maleic Diesters”.

 

61.       Peter Langer*, Edith Holtz, Inass Karimé, Nehad N. R. Saleh, J. Org. Chem. 2001, 66, 6057-6063.

„Regio- and Diastereoselective Synthesis of 2-Alkylidenetetrahydrofurans by Domino SN/SN' and SN/SN Reactions of 1,3-Dicarbonyl Dianions”.

 

60.       Peter Langer, Habilitationsschrift, Universität Göttingen,  2001.

„New Strategies for the Efficient Synthesis of Medium-Sized Bicyclic γ-Alkylidenebutenolides Based on Regioselective Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Oxalyl Chloride”.

 

59.       Peter Langer*, Tobias Eckardt, Nehad N. R. Saleh, Inass Karimé, Peter Müller, Eur. J. Org. Chem.  2001, 3657-3667.

„New Strategies for the Synthesis of Medium-Sized Bicyclic Butenolides Based on Lewis Acid Catalyzed [3+2]-Cyclizations of Bis-Silyl Enol Ethers”.

 

58.       Peter Langer*, Joachim T. Anders, Manfred Döring, Helmar Görls, Eur. J. Org. Chem.  2001, 3953-3958.

„One-Pot Synthesis of (3-Imino-2,3-dihydro-1H-indol-2-ylidene)acetic Amides by Double-Anion-Capture-Reactions of Amide Carbanions with Oxal Di(imidoyl)-dichlorides”.

 

57.       Peter Langer*, Manfred Döring, Synlett 2001, 1437-1439.

„Regio- and Stereoselective Synthesis of N-Aryl-5-alkylidene-5H-pyrrol-2-ones by a New Domino Reaction of 1,3-Dicarbonyl Dianions with Oxalic Acid-bis(imidoyl)chlorides”.

 

56.       Peter Langer*, Jörg Wuckelt, Manfred Döring,* Peter R. Schreiner, and Helmar Görls, Eur. J. Org. Chem. 2001, 2257-2263.

„Regioselective Anionic [3+2] Cyclizations of Isoxazole, Pyrazole and 1,2,4-Triazole Dinucleophiles — Efficient Synthesis of 2,4-Dihydroimidazo[4,5-b]quinoxalines, 3H-Imidazo[1,2-b]pyrazoles and 5H-Imidazo[2,1-c]-1,2,4-triazoles“.

 

55.       Peter Langer*, Tobias Eckardt, Toni Schneider, Cornelia Göbel, and Regine Herbst-Irmer, J. Org. Chem. 2001, 66, 2222-2226.

„Efficient Synthesis of γ-Alkylidenetetronic Esters by Sequential Lewis Acid Catalyzed [3+2] Cyclizations and Palladium-Catalyzed Cross Coupling Reactions”.

 

54.       Peter Langer*, Chem. Eur. J.  2001, 7, 3858-3866 (Concept Article).

„Regio- and Diastereoselective Cyclization Reactions of Free and Masked 1,3-Dicarbonyl Dianions with 1,2-Dielectrophiles”.

 

53.       Peter Langer*, Uwe Albrecht, Synlett 2001, 526-528.

„Efficient Synthesis of Functionalized 4,5-Benzotropones by Regioselective Cyclization of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Phthalic Dialdehyde”.

 

52.      Peter Langer*, Ilia Freifeld, Synlett 2001, 523-525.

„Regio- and Diastereoselective Synthesis of Lissoclinolide Analogues by Lewis Acid Catalyzed Cyclization of the First 1,5-Bis(trimethylsilyloxy)-1,3,5-hexatrienes with Oxalyl Chloride”.

 

51.        Peter Langer*, Manfred Döring, Helmar Görls, Eur. J. Org. Chem.  2001, 1511-1517.

„Regioselective Synthesis of Heterospirocyclic Isobenzofuranones and Medium-Sized Lactones by Multiple Anion Capture Reactions of 1,3-Dianions”.

 

50.        Peter Langer*, Jörg Wuckelt, Manfred Döring*, Helmar Görls, Eur. J. Org. Chem. 2001, 1503-1509.

„Double Anion Capture Reactions of Anthranilic Esters with Oxaldiimidoyl Dichlorides - Efficient Synthesis of 2,2'-Biquinazoline-4,4'(3H,3'H)-diones”.

 

49.      Peter Langer*, Manfred Döring, Peter R. Schreiner, Helmar Görls, Chem. Eur. J.  20017, 2617-2627.

„Synthesis of Radialene-shaped Pyrroles by Multiple-Anion-Capture Reactions of 1,3-Dianions”.

 

48.       Peter Langer*, Jörg Wuckelt, Manfred Döring*, Peter R. Schreiner, Helmar Görls, Eur. J. Org. Chem. 2001, 2245-2255.

„Regioselective Cyclizations of Imidazole Dinucleophiles with Oxaldiimidoyl Dichlorides – A Combined Experimental and Theoretical Study”.

 

47.      Peter Langer*, Thilo Krummel, Chem. Eur. J. 2001, 7, 1720-1727.

„Chemo-, Regio- and Stereoselective Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with α-Chloroacetic Acid Chlorides and α-Chloroacetic Acetals”.

 

46.       Jörg Wuckelt, Manfred Döring*, Helmar Görls, Peter Langer*, Eur. J. Inorg. Chem. 2001, 805-811.

„Synthesis and Properties of Dimetallic Carbonyl Complexes based on New Oxalamidine Derived Ligands with Pendant Pyridine Functionality”.

 

45.        Peter Langer*, Manfred Döring, Dietmar Seyferth, Helmar Görls, Chem. Eur. J. 2001, 7, 573-584.

„Direct Transformation of Silyl Enol Ethers into Allenes”.

 

44.      Peter Langer*, Ilia Freifeld, Chem. Eur. J. 2001, 7, 565-572.

„Regio- and Stereoselective Synthesis of Nor-Nonactinic Acid Derivatives - Kinetic Reaction Control in the Lewis Acid mediated Domino Reaction of 1,3-Dicarbonyl-Dianions with 1-Bromo-2,3-Epoxypropanes”.

 

 

2000

 

43.       Peter Langer*, Nehad N. R. Saleh, Org. Lett. 2000, 2, 3333-3336.

„Regioselective Synthesis of Medium-Sized Bicyclic Butenolides by Lewis Acid catalyzed Cyclization of Cyclic 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Oxalyl Chloride”.

 

42.      Peter Langer*, Tobias Eckardt, Martin Stoll, Org. Lett. 2000, 2991-2993.

„Efficient Synthesis of Butenolide—Medium Ring Ether Hybrids by a [3+2] Cyclization—Ring-Closing Metathesis Strategy”.

 

41.      Peter Langer*, Valentin Köhler, Chem. Commun. 2000, 1653-1654.

„First Oxidative Dimerization of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes”.

 

40.      Peter Langer*, J. Prakt. Chem. 2000, 342, 728-730.

„Tetra-n-propyl Ammonium Perruthenate (TPAP) – an Efficient and Selective Reagent for the Oxidation of Alcohols to Aldehydes”.

 

39.       Peter Langer*, Valentin Köhler, Org. Lett. 2000, 2, 1597-1599.

„First Domino Mukaiyama-Aldol-Cyclizations of 1,3-Dianion Synthons with 1,2-Diketones”.

 

38.       Peter Langer*, Bettina Kracke, Tetrahedron Lett. 2000, 4545-4547.

„Regioselective Synthesis of Functionalized Homophthalates by Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-dienes with α-Allenylesters”.

 

37.       Peter Langer*, Tobias Eckardt, Angew. Chem. 2000, 112, 4503-4506; Angew. Chem. Int. Ed. 2000, 39, 4343-4346.

„Chemo-, Regio- and Stereoselective Cyclization of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with Functionalized Epoxides”.

 

36.      Peter Langer*, Thilo Krummel, Chem. Commun. 2000, 967-968.

„Chemo- and Regioselective Synthesis of Functionalized 3(2H)-Furanones by the First Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-dienes with α-Chlorocarboxylic Acid Chlorides”.

 

35.     Peter Langer*, Inass Karimé, Synlett 2000, 743-745.

„Regio- and Stereoselective Synthesis of 2-Alkylidene-tetrahydrofurans by Domino-Cyclodialkylations of 1,3-Dicarbonyl Dianions with 1-Bromo-2-chloroethane”.

 

34.      Peter Langer*, Toni Schneider, Synlett 2000, 497-500.

„Regioselective Synthesis and Acylations of Cyclic 1,3-Bis(trimethylsiloxy)-1,3-dienes SYMBOL 45 \f "Symbol" \s 12- New and Versatile 1,3-Dianion Synthons”.

 

33.      Peter Langer*, Tobias Eckardt, Synlett 2000, 844-847.

„New and Regioselective Synthesis of 4-Ylidenetetronic Acids by Cyclization of 4-Alkyloxy-bis(trimethylsiloxy)-1,3-dienes with Oxalyl Chloride”.

 

32.     Peter Langer*, Edith Holtz, Angew. Chem. 2000, 112, 3208-3211; Angew. Chem. Int. Ed. 2000, 39, 3086-3090.

„Stereoselective Synthesis and Palladium-catalyzed Transformations of 2-Alkylidene-5-vinyltetrahydrofurans”.

 

31.     Peter Langer*, Ilia Freifeld, Edith Holtz, Synlett 2000, 501-503.

„Chemo-, Regio- and Stereoselective Synthesis of 2-Alkylidene-5-hydroxymethyl-tetrahydrofurans by Reaction of 1,3-Dicarbonyl-Dianions with 1-Bromo-2,3-Epoxypropanes”.

 

30.       Peter Langer*, Angew. Chem. 2000, 112, 3177-3180; Angew. Chem. Int. Ed. 2000, 39, 3049-3052.

„New Strategies for the Development of an Asymmetric Version of the Baylis-Hillman Reaction”.

 

29.      Peter Langer*, Jörg Wuckelt, Manfred Döring, Helmar Görls, J. Org. Chem. 2000, 65, 3603.

„Stereoselective Synthesis of 2-Alkylidene-3-imino-indoles by Reaction of 1,1-Dianions with Bis(imidoyl)chlorides of Oxalic Acid”.

 

28.     Peter Langer*, Martin Stoll, Toni Schneider, Chem. Eur. J. 2000, 6, 3204-3214.

„Efficient and General Synthesis of SYMBOL 103 \f "Symbol" \s 12g-Alkylidenebutenolides by the first Lewis-Acid Catalyzed Cyclizations of 1,3-Bis(trimethylsiloxy)-1,3-dienes with Oxalyl Chloride”.

 

27.      Peter Langer*, Jörg Wuckelt, Manfred Döring*, J. Org. Chem. 2000, 65, 729-734.

„New and Efficient Synthesis of Pyrrolo[3,2-b]pyrrole-2,5-diones by Double-Anion-Capture Reactions of Ester-Carbanions with Bis(imidoyl)chlorides of Oxalic Acid”.

 

 

1999

 

26.    Peter Langer*, Manfred Döring, Chem. Commun. 1999, 2439-2440.

         „Cyclization Reactions of Vicinal Dianions with 1,2-Dielectrophiles – Synthesis and Properties of the First 2,3-Diiminothietanes”.

 

25.      Peter Langer*, Chem. Commun. 1999, 1217-1218.

„Synthesis and Domino Reactions of 1,1-Bis(hydroxymethyl)allenes”.

 

24.       Peter Langer*, Peter R. Schreiner*, Nachr. Chem. Tech. Lab. 1999, 1093-1094.

„Merck-Schuchardt-Lecture 1999 – Barry M. Trost”.

 

23.     Peter Langer*, Martin Stoll, Angew. Chem. 1999111, 1919-1922; Angew. Chem. Int. Ed. 1999, 38, 1803-1805.

„Regio- and Stereoselektive Synthesis of γ-Alkylidenebutenolides by Cyclization of Dilithiated 1,3-Dicarbonyl Compounds with N,N'-Dimethoxy-N,N'-dimethylethane-diamide”.

 

22.      Jörg Wuckelt, Manfred Döring*, Rainer Beckert, Peter Langer*, Synlett 1999, 1100-1102.

„Efficient Synthesis of Quinazolin-4-ones and Axially Chiral 2,2-Bis-quinazolin-4-ones by Reaction of Anthranilic Acid Derived Nucleophiles with Oxalic acid bis(imidoyl)chlorides”.

 

21.      Jörg Wuckelt, Manfred Döring*, Peter Langer*, Rainer Beckert, Synlett 1999, 468-470.

„Domino-Reaction of Oxal(imidoyl)chlorides with 3-Aminoisoxazoles: Regio- and Stereoselective Synthesis of 1,4-Dihydro-imidazo[4,5-b]quinoxalines”.

 

20.     Thomas Billert, Rainer Beckert*, Peer Fehling, Manfred Döring*, Jörg Brandenburg, Helmar Görls, Peter Langer*, J. Heterocycl. Chem. 1999, 36, 627-633.

„A New Domino Reaction based on [4+2] Cycloadditions of Pyrido[1,2-a]pyrazines with Azadienophiles”.

 

19.       Jörg Wuckelt, Manfred Döring*, Peter Langer*, Rainer Beckert, Helmar Görls, J. Org. Chem. 1999, 64, 365-372.

„Regioselective Synthesis of 5-Ylidenepyrrol-2(5H)-ones by Reaction of Transition Metal-Coordinated Bis(imidoyl) Chlorides with Carbon Nucleophiles”.

 

18.       Peter Langer*, Manfred Döring, Dietmar Seyferth, Synlett 1999, 135-137.

„Synthesis of Medium-Sized Rings, Spiro-annulated Oxazacycles and 1-Amino-3-Siloxy Dienes based on Regioselective Reactions of Ambident 1,3-Dianions”.

 

 

1998

 

17.       Peter Langer*, Manfred Döring, Dietmar Seyferth, Chem. Commun. 1998, 1927-1928. „Domino reaction of Lithiated Allenes with Nitriles”.

 

 

16.     Peter Langer*, Jörg Wuckelt, Manfred Döring*, Rainer Beckert, Eur. J. Org. Chem. 1998, 1467-1470.

„The Reaction of Ambident Dianions with Oxalic Acid Dielectrophiles.  Effect of the Heteroatoms of the Dinucleophile on the Regiochemistry of Cyclization”.

 

15.     Peter Langer*, Manfred Döring*, Synlett 1998, 399-401.

„New and Convenient Synthesis of Pyrrolo[1,2-a]benzimidazoles and Indolizinones based on Regioselective Cyclization Reactions of Heterocyclic Dianions”.

 

14.      Peter Langer*, Manfred Döring*, Synlett 1998, 396-398.

„Efficient and Stereoselective Syntheses of (3-Imino-2,3-dihydro-1H-indol-2-ylidene)acetonitriles   and –sulfones”.

 

13.     Jörg Wuckelt, Manfred Döring*, Peter Langer*, Helmar Görls, Rainer Beckert, Tetrahedron Lett. 1998, 39, 1135-1138.

„New and Convenient Synthesis of α-Tetramic Acid Amides via a Cobalt(II)-Mediated Reaction Cascade”.

 

12.      Peter Langer, Stuart J. Ince, Steven V. Ley*, J. Chem. Soc., Perkin Trans 1 1998, 3913-3915.

„Assembly of Dendritic Glycoclusters from Monomeric Mannose Building Blocks”.

 

 

11.      Luke Green, Berthold Hinzen, Stuart Ince, Peter Langer, Steven Ley*, Stuart Warriner, Synlett 1998, 440-442.

„One-Pot Preparation of Penta- and Heptasaccharides based on the Principles of Orthogonality and Reactivity-Tuning”.

 

10.      Peter Langer, H. M. R. Hoffmann, Rüdiger Wartchow*, Z. Krist. 1998, 193-194.

„Crystal Structure of (3S,8R,9R)-3,9-Dihydroxy-6'-methoxy-3-phenyl-10,11-dinorcin-chonane hemihydrate, (C24H26N2O3) • 0.5H2O”.

 

9.     Jens Frackenpohl, Peter Langer, H. M. R. Hoffmann*, Helv. Chim. Acta 1998, 8, 1429-1438.

„1,2-Carbonyl Transposition of a Protected Rubanone. Stereoselective Synthesis of Bicyclic and Tricyclic Lactams derived from Quinidine”.

 

8.      Wilfried Braje, Jens Frackenpohl, Peter Langer, H. M. R. Hoffmann*, Tetrahedron 1998, 54, 3495-3512.

„The Synthesis of Oxazatwistanes, Homo- and Bishomo-oxazatwistanes from Quinidine. Medium Ring Systems Derived from Cinchona Alkaloids”.

 

7.       Peter Langer, Jens Frackenpohl, H. M. R. Hoffmann*, J. Chem. Soc., Perkin Trans 1 1998, 801-806.

„Synthesis of Tricyclic N,O-Acetals from α-Functionalized Rubanone. A Masked 1,2,3-Rricarbonyl System from Quinidine”.

 

 

1997

 

6.      Peter Langer*, Manfred Döring, Helmar Görls, Rainer Beckert, Liebigs Ann./Receuil 1997, 2553-2561.

„Regioselective Cyclization Reactions of Ambident Amide Dianions with Oxalic Acid Dielectrophiles”.

 

5.      Jörg Wuckelt, Manfred Döring*, Peter Langer, Rainer Beckert, Helmar Görls, Tetrahedron Lett. 1997, 38, 5269-5272.

„Lactam Analogues of Pentalene. A  Novel  One-Pot  Synthesis of Pyrrolo[3,2-b]pyrrole-2,5-diones deriving from Pulvinic Acid”.

 

4.      Peter Langer, Dissertation, Universität Hannover, 1997.

„Regio- und Diastereoselektive Synthese von Stickstoffhaltigen Naturstoff-Fragmenten, Supramolekularen Heterocyclischen Strukturen und Chinaalkaloiden“.

 

3.     Dietmar Seyferth*, Tao Wang, Peter Langer, Robert L. Ostrander, Arnold L. Rheingold, Organometallics 1997, 16, 2413-2426.

„Reactions of the 1,1-Diphenylacetone-Derived Dianion as a C,O-Dinucleophile with Organohalosilanes and –germanes”.

 

2.     Peter Langer, H. M. R. Hoffmann*, Tetrahedron 1997, 53, 9145-9158.

„Diastereocontrol of Nucleophilic Attack of the Rubanone Carbonyl Group via Remote Siloxy Tether. Establishing the Natural Configuration at Carbon C(3) of Cinchona Alkaloids”.

 

 

1995

 

1.      Dietmar Seyferth*, Peter Langer, Manfred Döring, Organometallics 1995, 14, 4457-4459.

„New and Convenient Synthesis of Lithiated Allenes and Ketenimines Based on Readily Available Aryl-Substituted Ketones and Amides”.

 

Patents

 

 

1.     M. Lalk, U. Albrecht, P. Langer, Offenlegungsschrift DE 103 28 049 A1, 2005.01.13, Anmeldetag 20.6.2003.

„Neue antimikrobielle Chroman-4-one“

 

2.     M. Lalk, U. Albrecht, P. Langer, Intern. Patent PCT WO 2004/113317 A1, 29.12.2004, Anmeldetag 20.6.2003.

„Novel antimicrobial chroman-4-ones“

 

3.     G. Bose, K. Bracht, P. J. Bednarski, M. Lalk, P. Langer, Offenlegungsschrift DE 10 2005 052 501 A1, 2007.05.16, Anmeldetag 4.11.2005

„Neue Leitstrukturen für zytostatische Verbindungen auf Basis von Spiroverbindungen“

 

4.     K. Liebeton, J. Eck, U. T. Bornscheuer, D. Böttcher, P. Langer, E. Bellur, Intern. Patent PCT WO 2007128496. 2007.

“A novel group of esterases for the enantioselective production of fine and specialty chemicals”.

[Ende des Inhalts]

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