Efficient chiral poisoning of racemic titanium catalysts for the asymmetric chloral-ene reaction
作者:J.W. Faller、X. Liu
DOI:10.1016/0040-4039(96)00643-0
日期:1996.5
A BINOL catalyst can be poisoned with an inactive enantiopure catalyst, diisopropyl , to yield an effective catalyst for the asymmetric ene reaction with chloral. In some cases the ee's are greater than those observed with catalysts prepared from enantiopure BINOL.