作者:William E. Crowe、Daniel R. Goldberg、Zhijia J. Zhang
DOI:10.1016/0040-4039(96)00230-4
日期:1996.3
Allylsilanes are prepared by simple metathetical cross-coupling of terminal olefins with allyltrimethylsilane. Allytrimethylsilane coupling with π-substituted terminal olefins (styrenes, 1-phenyl-1,3-butadiene, and acrylonitrile) proceeds in excellent yield and very high selectivity. Lower, but still useful, selectivities are observed for allyltrimethylsilane/alkyl olefin cross-metathesis reactions
developed a chemoselective deprotection and nucleophilic substitution of acetals from aldehydes in the presence of ketals. This article describes the highly discriminative and chemoselective transformations of acetals bearing different substitution patterns, different types of acetals, as well as mixed acetals. These reactions can achieve the transformations that cannot be attained by conventional methods,