Asymmetric metal carbene insertion into the SiH bond
摘要:
alpha-Silyl-alpha-substituted acetic esters have been prepared in good yields and reasonable diastereoselectivities using an asymmetric metal carbene insertion into the Si-H bond. Optically active 1,2-diols were then prepared after reduction of the ester and conversion of the C-Si bond into a C-OH bond.
Preparation of optically active α-silylcarbonyl compounds using asymmetric alkylation of α-silylacetic esters and asymmetric metal-carbene insertion into the SiH bond
作者:Yannick Landais、Denis Planchenault
DOI:10.1016/s0040-4020(97)00002-1
日期:1997.2
Substituted α-silylacetic esters have been prepared in good yields and with reasonable diastereoselectivities by three different routes. The first two involved alkylation of the parent α-silylacetic ester enolates, with the chiral auxiliaries being present either on silicon or on the ester function. The third route involving asymmetric insertion of metal-carbenoids into the SiH bond was found to afford