Lu Zhichao, Han Junbin, Hammond Gerald B, Xu Bo
Department of Chemistry, University of Louisville , Louisville, Kentucky 40292, United States.
College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Lu, Shanghai 201620, China.
Org Lett. 2015 Sep 18;17(18):4534-7. doi: 10.1021/acs.orglett.5b02224. Epub 2015 Sep 3.
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.
从诸如L - Au - Cl的金催化剂前体生成阳离子金时，过量的银盐几乎总是会对阳离子金催化剂的反应性产生不利影响。通过超声处理然后离心生成的预制L - Au(+)X(-)配合物，会提高金催化反应中的反应性。银的不利影响可能是由银盐与金中间体的相互作用引起的。
