Modular Ligands Derived from Amino Acids for the Enantioselective Addition of Organozinc Reagents to Aldehydes
作者:Meaghan L. Richmond、Christopher T. Seto
DOI:10.1021/jo0349375
日期:2003.9.1
series of modular chiral ligands that are derived from amino acids were prepared and tested for their ability to catalyze the asymmetric addition of alkylzinc reagents to aromatic and aliphatic aldehydes. The ligands contain a tertiary amine, an amino acid side chain, and a carbamate or amide functional group. One ligand, which was synthesized from Ile, catalyzes the addition of diethylzinc to cyclo
制备了一系列新的衍生自氨基酸的模块化手性配体,并测试了它们催化烷基锌试剂向芳族和脂族醛的不对称加成的能力。配体包含叔胺,氨基酸侧链和氨基甲酸酯或酰胺官能团。由Ile合成的一种配体催化将二乙基锌添加到99%ee的环己烷甲醛中。