Indium-mediated allylation reaction of difluoroacetyltrialkylsilanes in aqueous media
作者:Woo Jin Chung、Seiichiro Higashiya、John T Welch
DOI:10.1016/s0040-4039(02)01183-8
日期:2002.8
Indium-mediated allylations of difluoroacetyltrialkylsilanes in aqueousmedia give homoallylic alcohols exclusively. The common Brook rearrangement C- to O-silyl group migration is totally suppressed with no detectable formation of enol silyl ethers. The influence of water on the allylation reaction is also described.
Indium- and zinc-mediated allylation of difluoroacetyltrialkylsilanes in aqueous media
作者:Woo Jin Chung、Seiichiro Higashiya、Yukiko Oba、John T Welch
DOI:10.1016/j.tet.2003.10.033
日期:2003.12
Metal-mediated allylations of difluoroacetyltriakylsilanes with various allyl bromides in aqueous media form homoallylic alcohols exclusively. The common Brook rearrangement, carbon to oxygen-silyl migration, is totally suppressed with no detectable formation of silyl enol ether. Influence of solvents on reaction is studied. Reactivity differences between indium and zinc are also described. (C) 2003 Elsevier Ltd. All rights reserved.