Ligand-Controlled Regiodivergent Silylation of Allylic Alcohols by Ni/Cu Catalysis for the Synthesis of Functionalized Allylsilanes
作者:Yi Gan、Wei Xu、Yuanhong Liu
DOI:10.1021/acs.orglett.9b03822
日期:2019.12.6
Ni/Cu-catalyzed regiodivergent synthesis of allylsilanes directly from allylic alcohols through modulating the steric and electronic properties of the ligands on the nickel catalyst has been developed. Good yields and excellent selectivity were obtained regardless of whether linear or α-branched allylic alcohols were utilized. Mechanistic studies indicate that an allyloxyboronate species is formed during the
通过调节镍催化剂上配体的空间和电子性质,直接由烯丙基醇直接进行烯丙基硅烷的Ni / Cu催化区域发散性合成已经得到了发展。无论使用线性还是α-支链的烯丙基醇,均获得了良好的收率和优异的选择性。机理研究表明,在反应过程中形成了烯丙氧基硼酸酯物质,这很可能充当了C(烯丙基)-O键氧化加成反应的活化中间体。