Influence of the metal and chiral diamine on metal(II)salen catalysed, asymmetric synthesis of α-methyl α-amino acids
作者:Yuri N Belokon、Jose Fuentes、Michael North、Jonathan W Steed
DOI:10.1016/j.tet.2004.02.025
日期:2004.3
The influence of the metal ion and chiral diamine used to form a metal(salen) complex on the catalytic activity of the complex in the asymmetric benzylation of an alanine enolate was investigated. Only metal ions which could form square-planar complexes gave catalytically active complexes, and best results were obtained with metal ions from the first row of transitionmetals, particularly copper(II)