Oxidative Heck Arylation for the Stereoselective Synthesis of Tetrasubstituted Olefins Using Nitroxides as Oxidants
作者:Zhiheng He、Sylvia Kirchberg、Roland Fröhlich、Armido Studer
DOI:10.1002/anie.201108211
日期:2012.4.10
and dioxygen serve as oxidants in highly stereoselective oxidative Pd‐catalyzed Heck arylations in which aryl boronic acids are used to synthesize triarylalkyl‐substituted olefins. The reactions occur under very mild conditions at room temperature. As an example, the threefold sequential arylation of methyl acrylate is the crucial step in the stereoselective synthesis of Z‐Tamoxifen.
一二三 在高度立体选择性氧化的Pd催化的Heck芳基化反应中,一氧化氮和二氧用作氧化剂,其中芳基硼酸用于合成三芳基烷基取代的烯烃。该反应在室温下在非常温和的条件下发生。例如,丙烯酸甲酯的三重顺序芳基化是Z-他莫昔芬立体选择性合成的关键步骤。