| 205. | Seniorenakademie, Rostock, 20.10.2021. | 
|
|  | 
| 2020 | 
|---|
| 204. | Universidad de La Laguna, Spanien, 28.2.2020. | 
| 203. | Universidad de La Habana, Cuba, 18.2.2020. | 
|  | 
| 2019 | 
|---|
| 202. | Universidad Tecnologica Equinoccial, Ecuador, Quito, 3.12.2019. | 
| 201. | University of Zagreb, Croatia, Zagreb, 9.10.2019. | 
| 200. | University of Rijeka, Croatia, Rijeka, 7.10.2019. | 
| 199. | Yerevan State University (YSU), 100 years anniversary of YSU, Yerevan, Republic of Armenia, 27.9.2019. | 
| 198. | Vietnam National University – Hanoi University of Sciences, 3rd RoHan Summerschool, Vietnam, Hanoi, 13.9.2019. | 
| 197. | Baku State University, Azerbaijan, Baku, 11.6.2019. | 
| 196. | University of Lodz, Poland, Lodz, 4.6.2019. | 
| 195. | Academy of Sciences of Poland, Poland, Warzawa, 3.6.2019. | 
| 194. | University of Wroclaw, Poland, Wroclaw, 31.5.2019. | 
| 193. | University of Malaga, Spain, Malaga, 14.5.2019. | 
| 192. | University of Almeria, Spain, Almeria, 10.5.2019. | 
| 191. | University of Tehran, Iran, Tehran, 1.5.2019. | 
| 190. | University of Qom, Iran, Qom, 30.4.2019. | 
| 189. | University of Busheer, Iran, Busheer, 28.4.2019. | 
| 188. | University of Shiraz, Iran, Shiraz, 26.4.2019. | 
|  | 
| 2018 | 
|---|
| 187. | Academy of Sciences of Hungary, Budapest, Hungary, Humboldt-Kolleg, 1.12.2018. | 
| 186. | University of Lille, Frankreich, 20.11.2018. | 
|  | 
| 2017 | 
|---|
| 185. | Universidad Valladolid, Spanien, 22.9.2017. | 
| 184. | Universidad Complutense Madrid, Spanien, 20.9.2017. | 
| 183. | Polytechnische Universität Lviv, Ukraine, 4.9.2017. | 
| 182. | Universität Khojand, Tadschikistan, 6.7.2017. | 
| 181. | Universität Khorog, Tadschikistan, 1.7.2017. | 
| 180. | Akademie der Wissenschaften Tadschikistan, Dushanbe, Tadschikistan, 29.6.2017. | 
| 179. | Universität Kharkov, Ukraine, 22.6.2017. | 
| 178. | Taras-Shevchenko Universität Kiev, Ukraine, 17.6.2017. | 
| 177. | Yerevan State University, Institute of Organic Chemistry, Armenien, 8.6.2017. | 
| 176. | Yerevan State University, Institute of Pharmaceutical Chemistry, Armenien, 7.6.2017. | 
| 175. | Universidad de Sevilla, Spanien, 7.3.2017. | 
| 174. | Universidad de Malaga, Spanien, 3.3.2017. | 
| 173. | Universidad de Murcia, Spanien, 1.3.2017. | 
| 172. | Universidad de Alicante, Spanien, 28.2.2017. | 
|  | 
| 2016 | 
|---|
| 171. | Universidad de Valencia, Valencia, Spanien, 3.10.2016. | 
| 170. | Universidad de Barcelona, Barcelona, Spanien, 30.9.2016. | 
| 169. | Universidad Autónoma de Barcelona, Barcelona, Spanien, 29.9.2016. | 
| 168. | Universidad de Girona, Girona, Spanien, 28.9.2016. | 
| 167. | Universität Greifswald, Festkolloquium, 23.9.2016. | 
| 166. | The third International Conference on “Research to Applications & Markets”, Hammamet, Tunesien, 17.9.2016. | 
| 165. | COMSATS Institute of Information Technology, Abbottabad, Pakistan, 27.8.2016. | 
| 164. | Université Euro-Méditerranéenne, Fès, Marokko, 2.6.2016. | 
| 163. | Université de Marrakech, Marrakech, Marokko, 30.5.2016. | 
| 162. | Université de Rennes, Rennes, Frankreich, 12.5.2016. | 
| 161. | Université de Rouen, Rouen, Frankreich, 11.5.2016. | 
| 160. | Université Paris-Sud, Orsay, Frankreich, 10.5.2016. | 
| 159. | École Supérieure de Chimie, Frankreich, 9.5.2016. | 
| 158. | Université de Marseille, Frankreich, 27.4.2016. | 
| 157. | Universidad de Oviedo, Oviedo, Spanien, 16.3.2016. | 
| 156. | Universidad de La Coruna, La Coruna, Spanien, 14.3.2016. | 
| 155. | Universidad Agraria Managua, Nicaragua, 1.3.2016. | 
| 154. | Universität Hamburg, Institutskolloquium, 19.1.2016. | 
|  | 
| 2015 | 
|---|
| 153. | Congreso de la Sociedad de Química Orgánica de Argentina, Mar del Plata, Argentinien, 14.11.2015. | 
| 152. | Universidad del País Vasco, San Sebastian, 10.9.2015. | 
| 151. | Universidad del País Vasco, San Sebastian, 3.9.2015. | 
| 150. | Universidad del País Vasco, Bilbao, 2.9.2015. | 
| 149. | Scientific and Production Center “Armbiotechnology” of National Academy of Science, Yerevan, Republic of Armenia, 2.4.2015. | 
| 148. | COMSATS Institute of Information Technology, campus Abbottabad, Abbottabad, Pakistan, 24.3.2015. | 
| 147. | DFG Workshop and Conference Vietnam National University Ho Chi Minh City, Ho Chi Minh City,17.3.2015. | 
| 146. | Universidad de La Habana, La Habana, Cuba, 5.+6.3.2015. | 
| 145. | Universidad Central “Marta Abreu” de Las Villas, Santa Clara, Cuba, 2.+3.3.2015. | 
| 144. | Universidad de Granma, Bayamo, Cuba, 26.+27.2.2015. | 
| 143. | Universidad de Antioquia, Medellín, Colombia, 12.+13.2.2015. | 
| 142. | Ponteficia Universidad de Javeriana, Bogotá, Colombia, lecture series, 5.-10.2.2015. | 
|  | 
| 2014 | 
|---|
| 141. | Al-Farabi Kazakh National University, Almaty, Kazakhstan, 9.12.2014. | 
| 140. | Universidad de La Plata, La Plata, Argentina, lecture series, 29.9.-3.10.2014. | 
| 139. | Universidad de Buenos Aires, Buenos Aires, Argentina, 26.9.2014. | 
| 138. | Federal University Rio de Janeiro, Rio de Janeiro, Brazil, 10.9.2014. | 
| 137. | University of Pecs, Pecs, Hungary, 28.8.2014. | 
| 136. | University of Szeged, Szeged, Hungary, 26.8.2014. | 
| 135. | University of Debrecen, Debrecen, Hungary, 25.8.2014. | 
| 134. | Scientific and Production Center “Armbiotechnology” of National Academy of Science, Yerevan, Republic of Armenia, 16.7.2014. | 
| 133. | University of Isfahan, Isfahan, Iran, 1.6.2014. | 
| 132. | Shiraz University Tehran, Tehran, Iran, 26.+27.5.2014. | 
| 131. | University of Qom, Qom, Iran, 24.+25.5.2014. | 
| 130. | Princess Sumaya University for Technology, Amman, Jordan, Humboldt Kolleg, Building International Networks for Enhancement of Research in Jordan, 3.4.2014. | 
| 129. | Amity University, Lucknow Campus, Lucknow, India, 20.3.2014. | 
| 128. | Amity University, Jaipur Campus, Jaipur, India, 14.3.2014. | 
| 127. | Amity University, Haryana Campus, Haryana, India, 13.3.2014. | 
| 126. | Amity University, Noida Campus, Noida, India, 12.3.2014. | 
| 125. | Universidad Central “Marta Abreu” de Las Villas, Santa Clara, Cuba, 24.+25.2.2014. | 
| 124. | Universidad de Granma, Bayamo, Cuba, 20.+21.2.2014. | 
|  | 
| 2013 | 
|---|
| 123. | University of Szeged, Szeged, Hungary, 18.11.2013. | 
| 122. | VNU University of Sciences, Hanoi, Vietnam, 8.+9.10.2013. | 
| 121. | Al-Farabi Kazakh National University, Almaty, Kazakhstan, lecture series, 2.-13.9.2013. | 
| 120. | University of Debrecen, Debrecen, Hungary, 31.5.2013. | 
| 119. | COMSATS Institute of Information Technology, campus Abbottabad, Abbottabad, Pakistan, 5.4.2013. | 
|  | 
| 2012 | 
|---|
| 118. | Enamine Ltd., Kiev, Ukraine, 14.11.2012. | 
| 117. | Taras Shevchenko University, Kiev, Ukraine, workshop, 13. - 14.11.2012. | 
| 116. | University of Clausthal, GdCh lecture, 8.11.2012. | 
| 115. | Scientific and Production Center “Armbiotechnology” of National Academy of Science, Republic of Armenia, 25.9.2012. | 
| 114. | VNU University of Science, Hanoi, Vietnam, workshop, 10.-13.9.2012. | 
| 113. | University of Debrecen, Hungary, 4.9.2012. | 
| 112. | Humboldt Kolleg, New Prospects for Science and Education in the MENA Region, Marrakech, Marroc, 10.3.2012 | 
| 111. | COMSATS Institute of Information Technology, campus Lahore, Pakistan, 24.2.2012. | 
| 110. | COMSATS Institute of Information Technology, campus Sahiwal, Pakistan, 24.2.2012. | 
| 109. | COMSATS Institute of Information Technology, campus Vehari, Pakistan, 23.2.2012. | 
| 108. | COMSATS Institute of Information Technology, campus Abbottabad, Pakistan, 21.2.2012. | 
| 107. | COMSATS Institute of Information Technology, campus Wah, Pakistan, 20.2.2012. | 
| 106. | University of Kulob, Tajikistan, 12.1.2012. | 
| 105. | Academy of Science of Tajikistan, Dushanbe, Tajikistan, 9.1.2012. | 
|  | 
| 2011 | 
|---|
| 104. | Merck AG, Darmstadt, 7.4.2011. | 
| 103. | Humboldt Kolleg The First International Conference on “Research to Applications & Markets” RAM 2011, Monastir, Tunisia, June 23 - 25, 2011. | 
| 102. | German-Hungarian workshop on chemistry, University of Debrecen, Hungary, 14.6.2011. | 
| 101. | Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan, 26.1.2011. | 
| 100. | Vietnam Academy of Sciences, Hanoi, Vietnam, 17.2.2011. | 
| 99. | VNU University of Sciences, Hanoi, Vietnam, 18.2.2011. | 
| 98. | German-Vietnamese workshop on catalysis, Hanoi, Vietnam, 21.2.2011. | 
| 97. | Lomonossow University, Moscow, Russia, 2.9.2011. | 
| 96. | University of Brno, Czech Republic, XIVth Conference on Heterocycles in Bio-organic Chemistry, 4.9. – 8.9.2011. | 
| 95. | Al-Farabi National University of Kazhastan, Almaty, 5 lectures in the period of 21.-26.9.2011. | 
| 94. | Yerevan State University, academic council, 21.10.2011. | 
| 93. | COMSATS Institute of Information Technology, campus Abbottabad, Pakistan, keynote lecture on the occasion of the convocation 2011. | 
|  | 
| 2010 | 
|---|
| 92. | Yerevan State University, Armenia, 14.6.2010. | 
| 91. | University of Hannover, Symposium zum 75. Geburtstag von Prof. H. H. R. Hoffmann, 12.11.2010. | 
| 90. | University of Amman, Jordan, Jordanian Materials Workshop, 10.5.2010. | 
| 89. | Jahrestagung der deutschen Gesellschaft für biomedizinische Technik 2010, Rostock-Warnemünde, 5.10. – 8.10.2010. | 
| 88. | Tishreen University Lattakia, Syria, 28.9.2010. | 
| 87. | Tishreen University Lattakia, Faculty of Sciences, Syria, 28.9.2010. | 
| 86. | Akademy of Sciences, Budapest, Hungary, 3.5.2010. | 
| 85. | University of Debrecen, Hungary, 5.5.2010. | 
| 84. | University of Szeged, Hungary, 6.5.2010. | 
| 83. | University of Cluj-Napoca, Romania, 26.5.2010. | 
| 82. | BMT 2010 Rostock, conference, 4. DGBMT Jahrestagung, 6.10.2010. | 
|  | 
| 2009 | 
|---|
| 81. | Enamine Ltd, Kiev, Ukraine, 19.6.2009. | 
| 80. | H.E.J. Research Institute, Karachi, Pakistan, 30.7.2009. | 
| 79. | G. C. University College Faisalabad, Pakistan, 29.7.2009. | 
| 78. | COMSATS University, Campus Lahore, Pakistan, 28.7.2009. | 
| 77. | UET Lahore, Pakistan, 28.7.2009. | 
| 76. | Quaid-e-Azam University, Pakistan, 24.7.2009. | 
| 75. | Ludwig-Maximillians University München, 14.12.2009. | 
| 74. | University of Göttingen, 30.11.2009. | 
| 73. | State University Yerevan, Armenia, 24.5.2009, DAAD Alumni conference. | 
|  | 
| 2008 | 
|---|
| 72. | University of Damascus, Syria, 2.12.2008. | 
| 71. | University of Potsdam, 22.10.2008. | 
| 70. | University of Belgrad, Serbia, 1.10.2008. | 
| 69. | University of Zagreb, Croatia, 26.9.2008. | 
| 68. | University of Latvia, Riga, Latvia, 3.9.2008. | 
| 67. | University of Rostock, ImSaT Workshop, 20.9.2008. | 
| 66. | Technical University Denmark, Kopenhagen, Denmark, 22.2.2008. | 
| 65. | Stockholm, Conference MedChemEurope, 20.9.2008. | 
| 64. | Stockholm, Karolinska Institute, Sweden, 19.9.2008. | 
| 63. | Imperial College London, UK, 4.3.2008. | 
| 62. | University of Düsseldorf, 24.1.2008. | 
|  | 
| 2007 | 
|---|
| 61. | Karl-Franzens-University of Graz, Austria, 29.6.2007. | 
| 60. | University of Zagreb, 27.6.2007. | 
| 59. | University of Ljubljana, 25.6.2007. | 
| 58. | University of Chemnitz, Festvortrag zur Ehrenpromotion von Prof. Dr. Dr. h. c. mult. Dietmar Seyferth, 24.5.2007. | 
| 57. | BayerHealthCare, 13.2.2007. | 
|  | 
| 2006 | 
|---|
| 56. | Vortragsreihe „The Cell-Material-Dialogue“,University of Rostock, 20.12.2006. | 
| 55. | GdCh-Lecture, University of Oldenburg, 9.11.2006. | 
| 54. | ICIQ, Tarragona, Spanien, 27.10.2006. | 
| 53. | Esteve Ltd, Barcelona, Spanien, 10.10.2006. | 
| 52. | Baltic Meeting on Microbial Carbohydrates 2006, Rostock, 6.10.2006. | 
| 51. | CEDNETS Conference, Klekotki, Polen, 25.9.2006. | 
| 50. | Harz-Heide-Seminar (anläßlich der Emeritierung von Prof. Dr. A. de Meijere), Goslar, 20.5.2006. | 
| 49. | Yerevan State University, Armenia, 16.5.2006. | 
| 48. | Yerevan State University, Armenia, 11.5.2006. | 
| 47. | University of Granma, Bayamo, Kuba, 1.3.2006. | 
| 46. | Drug Reasearch Institute, University de las Villas, Santa Clara, Kuba, 22.2.2006. | 
|  | 
| 2005 | 
|---|
| 45. | Leibniz-Institute of Catalysis, Rostock, 6.12.2005. | 
| 44. | Aventis Pharma, 1.12.2005. | 
| 43. | 7. Fachtagung für Iminiumsalze (ImSaT-7 2005), Bartholomä, 7.9.2005. | 
| 42. | GdCh Jahrestagung, University of Düsseldorf, 13.9.2005. | 
|  | 
| 2004 | 
|---|
| 41. | University of Dresden, 27.4.2004. | 
| 40. | University of Rostock, 20.1.2004. | 
|  | 
| 2003 | 
|---|
| 39. | University of Hannover, 21.6.2003. | 
| 38. | University of Hamburg, 5.5.2003. | 
| 37. | University of Wuppertal, 9. Januar 2003. | 
|  | 
| 2002 | 
|---|
| 36. | University of Rostock, 25. Oktober 2002. | 
| 35. | Merck, Darmstadt, 17. Oktober 2002. | 
| 34. | Aventis Pharma, Frankfurt am Main, 25. April 2002. | 
| 33. | BASF AG, Ludwigshafen, 15. März 2002. | 
| 32. | Chemiedozententagung 2002, University of Köln, 12. März 2002. | 
| 31. | Boehringer Ingelheim Pharma KG, Biberach, 28. Februar 2002. | 
|  | 
| 2001 | 
|---|
| 30. | University of Göttingen, 13. Dezember 2001. | 
| 29. | University of Stuttgart, 11. Dezember 2001. | 
| 28. | University of Greifswald, 10. Dezember 2001. | 
| 27. | University of Potsdam, 28. November 2001. | 
| 26. | University of Mainz, 25. Oktober 2001. | 
| 25. | Free University Berlin, 2.10.2001. | 
| 24. | CHIRAL Europe 2001, London, 11.-12. Oktober 2001. | 
| 23. | GDCh-Jahrestagung Chemie 2001, University of Würzburg, 23.-28. September 2001. | 
| 22. | BASF AG, Ludwigshafen. | 
| 21. | BAYER AG, Zentrale Forschung, Leverkusen, 26. Juli 2001. | 
| 20. | Institut für Organische Chemie, Universität Würzburg, 23. Juli 2001. | 
| 19. | University of Köln, 19. Juli 2001. | 
| 18. | Young Chemists Workshop „Selective Synthesis: New Reagents for Specific Transformations“, Fribourg, Switzerland, 7.-9. Juni 2001. | 
| 17. | Dept. of Pharmacy, University of Heidelberg, 18. Mai 2001. | 
| 16. | Steinheimer Gespräche für den Hochschullehrernachwuchs des Fonds der Chemischen Industrie, Steinheim (Hanau), 10.-12. Mai 2001. | 
| 15. | University of Dortmund, 15.5.2001. | 
| 14. | Habilitationskolloquium, University of Göttingen, 5. Mai 2001. | 
| 13. | Institut für Organische Chemie und Biochemie, University of Greifswald, 19. April 2001. | 
| 12. | Chemiedozententagung 2001, University of Leipzig, 18.-21. März 2001. | 
| 11. | Dept. of Chemistry, University of Heidelberg, 19. Februar 2001. | 
| 10. | University of Gießen, 5. Februar 2001. | 
|  | 
| 2000 | 
|---|
| 9. | University of Karlsruhe, 29. November 2000. | 
| 8. | Ludwig-Maximilians-University München, 8. November 2000. | 
| 7. | Harz-Heide-Seminar, St. Andreasberg, September 2000. | 
| 6. | Steinheimer Gespräche für den Hochschullehrernachwuchs des Fonds der Chemischen Industrie, Steinheim (Hanau), 18.-20. Mai 2000. | 
| 5. | First Hispano-German Organic Chemistry Symposium, La Coruna, Spain, 9.-11. April 2000. | 
|  | 
| 1998 | 
|---|
| 4. | University of Jena, Germany, group seminar Prof. Beckert, 5.7.1998. | 
| 3. | University Chemical Laboratory, Cambridge, England, April 1998. | 
|  | 
| 1997 | 
|---|
| 2. | University of Münster, group seminar Prof. Erker, Germany, März 1997. | 
|  | 
| 1996 | 
|---|
| 1. | Harz-Heide-Seminar, St. Andreasberg, September 1996. |