作者:Zhichao Lu、Junbin Han、Gerald B. Hammond、Bo Xu
DOI:10.1021/acs.orglett.5b02224
日期:2015.9.18
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.
过量的银盐会从金催化剂前体(例如L–Au–Cl)生成阳离子金,几乎总是对阳离子金催化剂的反应性产生不利影响。通过超声然后离心分离生成的预先形成的L–Au + X –络合物可提高金催化反应的反应性。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。