Indium- and zinc-mediated allylation of difluoroacetyltrialkylsilanes in aqueous media
摘要:
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.