Chiral phosphoproline-catalyzed asymmetric Michael addition of ketones to nitroolefins: an experimental and theoretical study
作者:Zhiping Zeng、Ping Luo、Yao Jiang、Yan Liu、Guo Tang、Pengxiang Xu、Yufen Zhao、G. Michael Blackburn
DOI:10.1039/c1ob06143g
日期:——
A novel pyrrolidine-based chiral phosphoproline is an effective bifunctional organocatalyst for the asymmetric Michael addition of ketones to nitroolefins giving high levels of diastereo- and enantio-selectivities (up to > 99 : 1 dr and 96% ee). anti-SR Transition state has the lowest barrier which controls the stereoselectivity, in agreement with experimental results.
一种新型吡咯烷基手性磷脯氨酸是一种有效的双功能有机催化剂,可用于酮与硝基烯烃的不对称迈克尔加成反应,具有很高的非对映和对映选择性(高达 > 99 : 1 dr 和 96% ee)。