Palladium-Catalyzed C−H Silylation through Palladacycles Generated from Aryl Halides
作者:Ailan Lu、Xiaoming Ji、Bo Zhou、Zhuo Wu、Yanghui Zhang
DOI:10.1002/anie.201800330
日期:2018.3.12
A highly efficient palladium‐catalyzed disilylation reaction of aryl halides through C−H activation has been developed for the first time. The reaction has broad substrate scope. A variety of aryl halides can be disilylated by three types of C−H activation, including C(sp2)−H, C(sp3)−H, and remote C−H activation. In particular, the reactions are also unusually efficient. The yields are essentially
首次开发了通过CH活化的高效钯催化的芳基卤化物的二甲硅烷基化反应。该反应具有广泛的底物范围。多种芳基卤化物可通过三种类型的CH活化来二芳基化,包括C(sp 2)-H,C(sp 3)-H和远程CHH活化。特别地,反应也异常有效。在许多情况下,即使在相对温和的条件下,即使存在少于1摩尔%的催化剂和1当量的甲硅烷基化试剂,收率也基本上是定量的。可以将二甲硅烷基化的联苯转化为二硅氧烷桥联的联苯。