| 2010 - 2017 | Member of the Advisory Board of the Karl-Ziegler-Foundation |
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| 2009 - 2010 | President of BOSS12 |
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| 2009 - 2010 | Coordinator of ORCHEM 2010 |
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| 2009 - 2018 | Associate Editor of "Chemistry and Biology" |
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| 2007 - 2011 | Senator of the German Academy of Sciences Leopoldina (Chemistry Section) |
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| 2007 - 2008 | Member of Research Assessment Exercise, RAE (Evaluation of UK Chemistry Departments) |
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| 2006 - 2007 | Member of the International Advisory Board of the Chemistry Department of Nagoya University (Japan) |
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| 2006 - 2011 | Member of the Advisory Board "Topics in Stereochemistry", John Wiley & Sons |
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| since 2005 | Honorary Member of the Editorial Advisory Board "Bulletin of the Chemical Society of Japan" |
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| 2003 - 2022 | Member of the Board of Governors of the Alfried Krupp von Bohlen und Halbach-Foundation |
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| 2003 - 2023 | Member of the Advisory Board of "QSAR & Combinatorial Science", Wiley-VCH |
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| 2002 - 2010 | Member of the Editorial Board "Angewandte Chemie", Wiley-VCH |
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| 2001 - 2005 | Member of Scientific Advisory Board for the School of Engineering and Science, International University Breme |
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| 2000 - 2005 | Member of Advisory Board, "Advanced Synthesis and Catalysis", Wiley-VCH |
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| 2000 - 2022 | Member of Advisory Board, "Russian Journal of Organic Chemistry" |
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| 1999 - 2022 | Member of Selction Committee, Alfried Krupp-Prize |
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| 1999 - 2005 | Chairman of Selection Committee, Adolf-von-Bayer-Prize (GDCh) |
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| 1998 - 2008 | Member of the Advisory Board, Catalysis NRSC (The Netherlands) |
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| 1998 - 2005 | Member of Advisory Board, Emil-Fischer-Prize (GDCh) |
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| since 1997 | Member of Editorial Board, "Topics in Organometallic Chemistry", Spinger |
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| 1997 - 2010 | Member of Board, Catalysis Network (Katalyseverbund) NRW |
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| 1997 | President of Bürgenstock-Conference |
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| 1995 | Vice-President of German Chemical Society (GDCh) |
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| 1994 - 2001 | Member of the Selection Committee, Karl Heinz Beckurts-Prize |
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| 1994 - 1999 | Member of Advisory Borad, "Nachrichten aus Chemie, Technik und Laboratorium" |
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| 1994 - 1998 | Member of Selection Committe, Carl-Duisberg-Prize (GDCh) |
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| 1993 - 2001 | Member of the Scientific Advisory Board, Institut für Organische Katalyseforschung Rostock (Germany) |
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| 1992 - 1996 | Chairman of Selection Committee, August-Wilhelm-von-Hofmann-Prize (Medal, GDCh) |
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| 1990 - 1995 | Member of the Board, German Chemical Society (GDCh) |
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| 1989 - 1992 | Committee Member of Fonds der Chemischen Industrie (Engeres Kuratorium) |
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| 1987 - 1988 | Chairman of Chemistry Department, University Marburg (Germany) |
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