Palladium‐Catalyzed, Chelation‐Assisted Stereo‐ and Regioselective Synthesis of Tetrasubstituted Olefins by Oxidative Heck Arylation
作者:Hyun Seung Lee、Ko Hoon Kim、Sung Hwan Kim、Jae Nyoung Kim
DOI:10.1002/adsc.201200306
日期:2012.9.17
An efficient synthesis of tetrasubstituted olefins was achieved via a palladium‐catalyzed, chelation‐assisted oxidative Heck arylation protocol from trisubstituted olefins bearing a tether with a directing group in a completely stereo‐ and regioselective manner. The stereo‐ and regioselectivity as well as excellent yields of tetrasubstituted olefins originated from the stabilization of a palladium
通过钯催化的,螯合辅助的氧化Heck芳基化反应方案,可以从带有取代基的带有方向基团的三取代烯烃以完全立体和区域选择性的方式高效合成四取代烯烃。四取代烯烃的立体选择性和区域选择性以及出色的收率均源于钯中间物与导向基团之间的螯合作用,使钯中间体稳定。