Ru-catalyzed asymmetric hydrogenation of α,β-unsaturated ketones <i>via</i> a hydrogenation/isomerization cascade
作者:Kun Wang、Saisai Niu、Weijun Tang、Dong Xue、Jianliang Xiao、Hongfeng Li、Chao Wang
DOI:10.1039/d4cc00356j
日期:2024.4.16
Ru-catalyzed asymmetric hydrogenation of α-substituted α,β-unsaturated ketones has been developed for the enantioselective synthesis of chiral α-substituted secondary alcohols with high diastereo- and enantioselectivities (up to >99 : 1 dr, 98% ee). Mechanistic experiments suggest that the reaction proceeds via a Ru-catalyzed asymmetric hydrogenation of the CO bond in concert with a base-promoted allylic
Ru 催化的 α-取代 α,β-不饱和酮的不对称氢化已被开发用于手性 α-取代仲醇的对映选择性合成,具有高非对映选择性和对映选择性(高达 >99 : 1 dr,98% ee)。机理实验表明该反应是通过Ru催化的C的不对称氢化进行的 O 键与碱促进的烯丙醇异构化相配合,最终的立体选择性由酮中间体不对称氢化过程中的 DKR 过程控制。