[(NHC)AuCl]-catalyzed Meyer–Schuster rearrangement: scope and limitations
作者:Rubén S. Ramón、Nicolas Marion、Steven P. Nolan
DOI:10.1016/j.tet.2008.10.111
日期:2009.2
system allowing for the synthesis of a variety of α,β-unsaturated ketones has been developed. [(NHC)AuCl] (NHCN-heterocyclic carbene) in the presence of a silver(I) salt was found to catalyze the Meyer–Schuster rearrangement, leading to α,β-unsaturated ketones from easily accessible propargylic alcohols in high yields. Catalysis was performed in a 2:1 mixture of methanol and water at 60 °C and afforded