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Gold Catalysis: In Situ EXAFS Study of Homogeneous Oxidative Esterification |
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| Authors: | A Stephen K Hashmi Prof Dr Christian Lothschütz Dipl‐Chem Martin Ackermann Dipl‐Chem René Doepp Dipl‐Chem Sankaran Anantharaman Benjamin Marchetti Dipl‐Chem Helmut Bertagnolli Prof Dr Frank Rominger Dr |
| Institution: | 1. Institute of Organic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49)?6221‐544205;2. Institut of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany), Fax: (+49)?711‐6856‐4443 |
| Abstract: | Gold complexes were prepared and investigated as catalysts for the oxidative esterification of aldehydes. Stabilisation by pyridine ligands gave good conversions and the in situ extended X‐ray absorption fine structure (EXAFS) study of the reactions indicated that the reaction mixtures contained only mononuclear gold species. Thus, this is the first proof for a homogeneous gold‐catalysed oxidation reaction; the presence of nanoparticles could be excluded experimentally. |
| Keywords: | esters EXAFS spectroscopy gold oxidation pyridines |