Cobalt-Catalyzed Sequential Site- and Stereoselective Hydrosilylation of 1,3- and 1,4-Enynes
作者:Wenxin Lu、Yongmei Zhao、Fanke Meng
DOI:10.1021/jacs.2c00288
日期:2022.3.30
center. Reactions of 1,4-enynes proceeded through sequential isomerization of the alkene moiety followed by site- and stereoselective hydrosilylation. A wide range of alkenylsilanes were afforded in high efficiency and selectivity. Functionalization of the enantioenriched silanes containing a stereogenic center at silicon delivered a variety of chiral building blocks that are otherwise difficult to access
介绍了由双膦衍生的钴配合物促进的 1,3-烯炔和 1,4-烯炔的催化连续氢化硅烷化。将伯硅烷位点和立体选择性 Si-H 加成到 1,3-烯炔上,然后依次进行分子内非对映选择性和对映选择性 Si-H 加成,得到对映富集的环状烯基硅烷,同时构建了碳立体中心和硅立体中心。1,4-烯炔的反应通过烯烃部分的顺序异构化,然后是位点和立体选择性氢化硅烷化进行。以高效率和选择性提供了范围广泛的烯基硅烷。在硅上含有立体中心的对映体富集硅烷的功能化提供了各种难以获得的手性构件。