Revisiting the Influence of Silver in Cationic Gold Catalysis: A Practical Guide.
An excess amount of silver salt to generate cationic gold from a gold catalyst precursor such as L-Au-Cl almost always has adverse effects on the reactivity of the cationic gold catalyst. A preformed L-Au(+)X(-) complex, generated by sonication followed by centrifugation, increases the reactivity in a gold catalyzed reaction. The adverse silver effect might be caused by the interaction of silver salts with gold intermediates.
Department of Chemistry, University of Louisville , Louisville, Kentucky 40292, United States.
Zhichao
Z
Lu
Department of Chemistry, University of Louisville , Louisville, Kentucky 40292, United States.
Junbin
J
Han
Department of Chemistry, University of Louisville , Louisville, Kentucky 40292, United States.
Gerald B
GB
Hammond
College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Lu, Shanghai 201620, China.
Bo
B
Xu