DETERMINANTS OF DIASTEREOSELECTIVITY IN -BENZYLATION REACTIONS OF CARBOXYLIC ESTERS OF BORNANOL DERIVATIVES
摘要:
The influence of the steric bulk and chelation potential of the "blocking group" on the unexpectedly low diastereoselectivity observed during the a-benzylation of carboxylic ester enolates of 3,3-(2,3-butanedioxy)-2-exo-bornanol is examined.
Asymmetric Baylis-Hillman Reactions of Novel Bornyl Acrylate Esters
作者:Melanie D. Evans、Perry T. Kaye
DOI:10.1080/00397919908086209
日期:1999.6
Abstract 3, 3-(2, 3-Butanedioxy)-2-exo-bornyl acrylate esters have been prepared from D-(+)-camphor and reacted with a range of aldehydes to afford the corresponding Baylis-Hillman products in up to 34% d.e.