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。