Gold catalysis: in situ EXAFS study of homogeneous oxidative esterification.
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.
Hashmi
A Stephen K
AS
Institute of Organic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany. hashmi@hashmi.de
Lothschütz
Christian
C
Ackermann
Martin
M
Doepp
René
R
Anantharaman
Sankaran
S
Marchetti
Benjamin
B
Bertagnolli
Helmut
H
Rominger
Frank
F