| since 2010 |
Member of the Advisory Board of the Karl-Ziegler-Foundation |
| 2009 - 2010 |
President of BOSS12 |
| 2009 - 2010 |
Coordinator of ORCHEM 2010 |
| since 2009 |
Associate Editor of "Chemistry and Biology" |
| 2007 - 2011 |
Senator of the German Academy of Sciences Leopoldina (Chemistry Section) |
| 2007 - 2008 |
Member of Research Assessment Exercise, RAE (Evaluation of UK Chemistry Departments) |
| 2006 - 2007 |
Member of the International Advisory Board of the Chemistry Department of Nagoya University (Japan) |
| 2006 - 2011 |
Member of the Advisory Board "Topics in Stereochemistry", John Wiley & Sons |
| since 2005 |
Member of the Editorial Advisory Board "Bulletin of the Chemical Society of Japan" |
| since 2003 |
Member of the Board of Governors of the Alfried Krupp von Bohlen und Halbach-Foundation |
| since 2003 |
Member of the Advisory Board of "QSAR & Combinatorial Science", Wiley-VCH |
| 2002 - 2010 |
Member of the Editorial Board "Angewandte Chemie", Wiley-VCH |
| 2001 - 2005 |
Member of Scientific Advisory Board for the School of Engineering and Science, International University Breme |
| 2000 - 2005 |
Member of Advisory Board, "Advanced Synthesis and Catalysis", Wiley-VCH |
| since 2000 |
Member of Advisory Board, "Russian Journal of Organic Chemistry" |
| since 1999 |
Member of Selction Committee, Alfried Krupp-Prize |
| 1999 - 2005 |
Chairman of Selection Committee, Adolf-von-Bayer-Prize (GDCh) |
| 1998 - 2008 |
Member of the Advisory Board, Catalysis NRSC (The Netherlands) |
| 1998 - 2005 |
Member of Advisory Board, Emil-Fischer-Prize (GDCh) |
| since 1997 |
Member of Editorial Board, "Topics in Organometallic Chemistry", Spinger |
| 1997 - 2010 |
Member of Board, Catalysis Network (Katalyseverbund) NRW |
| since 1997 |
President of Bürgenstock-Conference |
| since 1995 |
Vice-President of German Chemical Society (GDCh) |
| 1994 - 2001 |
Member of the Selection Committee, Karl Heinz Beckurts-Prize |
| 1994 - 1999 |
Member of Advisory Borad, "Nachrichten aus Chemie, Technik und Laboratorium" |
| 1994 - 1998 |
Member of Selection Committe, Carl-Duisberg-Prize (GDCh) |
| 1993 - 2001 |
Member of the Scientific Advisory Board, Institut für Organische Katalyseforschung Rostock (Germany) |
| 1992 - 1996 |
Chairman of Selection Committee, August-Wilhelm-von-Hofmann-Prize (Medal, GDCh) |
| 1990 - 1995 |
Member of the Board, German Chemical Society (GDCh) |
| 1989 - 1992 |
Committee Member of Fonds der Chemischen Industrie (Engeres Kuratorium) |
| 1987 - 1988 |
Chairman of Chemistry Department, University Marburg (Germany) |