Direct enantioselective synthesis of syn-1,3-diols by the reaction of aldehydes with enol silyl ethers in the presence of a chiral borane complex. Successive asymmetric aldol reaction and asymmetric reduction with one promoter
作者:Yuichi Kaneko、Takao Matsuo、Syun-ichi Kiyooka
DOI:10.1016/s0040-4039(00)73125-x
日期:1994.6
A stoichiometric amount of the chiral borane 1 turned out to successively promote the asymmetric aldolreaction of aldehydes with enol silyl ethers and the following asymmetric reduction in one pot to afford syn-1,3-diols with high enantioselectivity.
Treatment of α-halo carbonyl compounds with title Sn-Al or Pb-Al reagents provides enolates which react with aldehydes or ketones to give β-hydroxy carbonyl compounds effectively.