Chelation versus Non-Chelation Control in the Stereoselective Alkenyl sp<sup>2</sup>
C−H Bond Functionalization Reaction
作者:Qiu-Ju Liang、Chao Yang、Fei-Fan Meng、Bing Jiang、Yun-He Xu、Teck-Peng Loh
DOI:10.1002/anie.201700559
日期:2017.4.24
A hydroxy group chelation‐assisted stereospecific oxidative cross‐coupling reaction between alkenes was developed under mild reaction conditions. In the presence of palladium catalyst, the alkenes tethered with hydroxy functionality can couple efficiently with electron‐deficient alkenes to form the corresponding multi‐substituted olefin products. The hydroxy group on the substrate could play dual roles
在温和的反应条件下,烯烃之间发生了羟基螯合辅助的立体定向氧化交叉偶联反应。在钯催化剂的存在下,与羟基官能团相连的烯烃可以与缺电子的烯烃有效偶联,形成相应的多取代烯烃产物。底物上的羟基可在反应中扮演双重角色,充当烯基CH键活化的指导基团并控制产物的立体选择性。