Fluoride ion-catalyzed generation and carbonyl addition of α-halo carbanions derived from α-halo organosilicon compounds
作者:Makoto Fujita、Michio Obayashi、Tamejiro Hiyama
DOI:10.1016/s0040-4020(01)86661-8
日期:1988.1
The title carbanion species are generated from the corresponding α-haloorganosilicon compounds by the action of a catalytic amount of tris(diethylamino)sulfonium difluorotrimethylsilicate and are found to undergo addition to aldehyde carbonyl efficiently at ambient temperature. The synthetic potential of the reaction is demonstrated by application to the synthesis of some insecticides.
Directing group and transitionmetalfree C–H bond functionalization of a simple molecule is an ideal but challenging chemical transformation. Herein, we report a general Mg-prompted approach to synthesize versatile polyfluoroaryl carbinols at ambient temperature viapolyfluoroarene C–H bond addition to aldehydes, which featured excellent monoaddition selectivity and broad functional group compatibility