Unlikeliness of Pd-Free Gold(I)-Catalyzed Sonogashira Coupling Reactions
作者:Thorsten Lauterbach、Madeleine Livendahl、Antonio Rosellón、Pablo Espinet、Antonio M. Echavarren
DOI:10.1021/ol101012n
日期:2010.7.2
The Sonogashira coupling reaction is not catalyzed by Aul/dppe in the absence of Pd complexes. However, addition of 0.1 mol % of Pd(0) led to efficient cross-coupling reactions. The most plausible catalytic cycles for the Au-catalyzed cross-coupling reactions have been examined and are unlikely in the absence of Pd contamination.