Copper-catalyzed Silylative Allylation of Ketones and Aldehydes Employing Allenes and Silylboranes
作者:Yosuke Tani、Tatsuya Yamaguchi、Tetsuaki Fujihara、Jun Terao、Yasushi Tsuji
DOI:10.1246/cl.141018
日期:2015.3.5
The copper-catalyzed silylative allylation of ketones with allenes and silylboranes via an in situ generated β-silylallylcopper intermediate has been developed. Various ketones and allenes were converted to the homoallylic tertiary alcohols bearing internal (E)-vinylsilane moieties regio- and stereoselectively in good to high yields. Aldehydes were also employed as electrophiles in the reaction.
铜催化的酮与丙二烯和硅硼烷通过原位生成的β-硅基丙烯基铜中间体的硅醼化烯丙化反应已被开发。各种酮和丙二烯被选择性地转化为具有内消旋(E)-乙烯基硅烷基团的同烯丙基三级醇,产率良好至较高。醛也被用作反应中的亲电试剂。