Asymmetric Hydrophosphonylation of α-Ketoesters Catalyzed by Cinchona-Derived Thiourea Organocatalysts
作者:Fei Wang、Xiaohua Liu、Xin Cui、Yan Xiong、Xin Zhou、Xiaoming Feng
DOI:10.1002/chem.200802237
日期:2009.1.5
Naturally catalytic: The cinchonidine‐ and cinchonine‐derived bifunctional thiourea organocatalysts 1 a and 1 g (see picture) have been applied in the asymmetric hydrophosphonylation of aromatic and heteroaromatic α‐ketoesters for the first time, obtaining S and R products in high yields with good to excellent enantioselectivities (up to 91 % ee).
天然催化:辛可尼定和辛可宁衍生的双官能硫脲有机催化剂1a和1g(参见图片)首次用于芳族和杂芳族α-酮酸酯的不对称加氢羰基化反应,以高收率获得S和R产物优良至优异的对映选择性(高达91% ee)。