Nickel-Catalyzed Allylic Substitution of Simple Alkenes
作者:Ryosuke Matsubara、Timothy F. Jamison
DOI:10.1002/asia.201000875
日期:2011.7.4
This report describes a nickel‐catalyzed allylic substitution process of simplealkenes whereby an important structural motif, a 1,4‐diene, was prepared. The key to success is the use of an appropriate nickel–phosphine complex and a stoichiometric amount of silyl triflate. Reactions of 1‐alkyl‐substituted alkenes consistently provided 1,1‐disubstituted alkenes with high selectivity. Insight into the
Alkenylfluorosilanes smoothly underwent cross-coupling reaction with allylic carbonates in the presence of a palladiun catalyst and in the absence of fluoride ion to give 1,4-dienes in good yields with retention of configuration.