Iridium-Catalyzed Asymmetric Transfer Hydrogenation of 1-Aryl-1-alkylethenes with Ethanol
作者:Xixia Tang、Lu Qian、Guixia Liu、Zheng Huang
DOI:10.1021/acs.orglett.3c01880
日期:2023.7.7
Asymmetric transfer hydrogenation of 1-aryl-1-alkylethenes with ethanol was developed with a chiral (PCN)Ir complex as the precatalyst, featuring high enantioselectivities, good functional group tolerance, and operational simplicity. The method is further applied to formal intramolecular asymmetric transfer hydrogenation of alkenols without an external H-donor, producing a tertiary stereocenter and
以手性(PCN)Ir配合物为预催化剂,开发了1-芳基-1-烷基乙烯与乙醇的不对称转移氢化反应,具有对映选择性高、官能团耐受性好、操作简单等特点。该方法进一步应用于无需外部氢供体的烯醇的正式分子内不对称转移氢化,同时产生叔立构中心和远程酮基。克级合成和( R )-黄根醇关键前体的合成凸显了催化系统的实用性。