and great synthetic value of chiral lactones and their derivatives, increasing attention has been paid to developing effective synthetic methods for chiral lactones. We herein report an efficient asymmetric hydrogenation of benzo-fused ketoesters, γ-ketoesters and biaryl-bridged ketoesters catalyzed by chiral iridium complexes bearing ferrocene-based chiral ligands, furnishing a series of chiral lactones
由于手性内酯及其衍
生物的
生物学意义和巨大的合成价值,人们越来越重视开发有效的手性内酯合成方法。我们在此报道了由带有
二茂铁基手性
配体的手性
铱配合物催化的苯并稠合
酮酯、γ-
酮酯和联芳基桥接
酮酯的有效不对称氢化,以极好的收率和优异的对映选择性(高达 99%)提供一系列手性内酯产量和高达 99% ee)。