Enantioselective and Diastereoselective Ir-Catalyzed Hydrogenation of α-Substituted β-Ketoesters via Dynamic Kinetic Resolution
作者:Guoxian Gu、Jiaxiang Lu、Ouran Yu、Jialin Wen、Qin Yin、Xumu Zhang
DOI:10.1021/acs.orglett.8b00433
日期:2018.4.6
An iridium/f-amphol catalytic system for the enantioselective hydrogenation of α-substituted β-ketoesters via dynamic kinetic resolution is reported. The desired anti products were obtained in high yields (up to 98%) with good diastereoselectivity (up to 96:4 diastereometic ratio (dr)) and excellent enantioselectivity (up to >99% enantiomeric excess (ee)). A catalytic model is proposed to explain the
报道了用于通过动态动力学拆分对α-取代的β-酮酸酯进行对映选择性氢化的铱/ f-amphol催化体系。以高收率(高达98%),良好的非对映选择性(高达96:4的非对映比率(dr))和优异的对映选择性(高达> 99%的对映体过量(ee))获得所需的抗产物。提出了催化模型来解释立体选择性。