A Highly Chemoselective Cobalt Catalyst for the Hydrosilylation of Alkenes using Tertiary Silanes and Hydrosiloxanes
作者:Abdulrahman D. Ibrahim、Steven W. Entsminger、Lingyang Zhu、Alison R. Fout
DOI:10.1021/acscatal.6b01091
日期:2016.6.3
The hydrosilylation of alkene substrates bearing additional functionalities is difficult to achieve using earth-abundant catalysts and has not been extensively realized with both earth-abundant transition metals and tertiary silanes or hydrosiloxanes. Reported herein is a well-defined bis(carbene) cobalt(I)-dinitrogen complex for the efficient, catalytic anti-Markovnikov hydrosilylation of terminal
带有附加功能的烯烃底物的氢化硅烷化难以使用富含地球的催化剂来实现,并且还没有被富含地球的过渡金属和叔硅烷或氢硅氧烷广泛地实现。本文报道的是定义明确的双(卡宾)钴(I)-二氮配合物,用于末端烯烃的高效,催化抗马尔科夫尼科夫氢化硅烷化反应,具有广泛的底物范围。含有羟基,氨基,酯,环氧化物,酮,甲酰基和腈基的烯烃按该反应顺序被选择性地氢化硅烷化。反应性中间体的多核NMR研究提供了对该机理的见解。