14-Electron Pt(II) germyl complexes bearing small N-heterocyclic carbene ligands (NHC) catalyze the regio- and diastereoselective hydrosilylation (anti SiH bond addition) of electron-rich alkenes derived from enamines, thus producing β-aminosilanes. On the contrary, using bulkier NHC ligands promotes the competitive silylative dehydrocoupling process. Mechanistic studies point to unprecedented outer-sphere Pt-catalyzed
带有小N-杂环卡宾
配体(NHC)的14-电子Pt(II)甲
锗烷基络合物催化源自烯胺的富电子烯烃的区域和非对映选择性氢化
硅烷化(反SiH键加成),从而产生β-
氨基
硅烷。相反,使用体积较大的 NHC
配体会促进竞争性
硅烷化脱氢偶联过程。机理研究指出了前所未有的外层
铂催化转变。