硅氢加成
烯烃
硅烷
钴
催化作用
化学
羧酸盐
烷基
硅烷化
有机化学
吡啶
高分子化学
硅烷
作者
Christopher H. Schuster,Tianning Diao,Iraklis Pappas,Paul J. Chirik
标识
DOI:10.1021/acscatal.6b00304
摘要
High-spin pyridine diimine cobalt(II) bis(carboxylate) complexes have been synthesized and exhibit high activity for the hydrosilylation of a range of commercially relevant alkenes and tertiary silanes. Previously observed dehydrogenative silylation is suppressed with the use of sterically unencumbered ligands, affording exclusive hydrosilylation with up to 4000 TON. The cobalt precatalysts were readily prepared and handled on the benchtop and underwent substrate activation, obviating the need for external reductants. The cobalt catalysts are tolerant of epoxide, amino, carbonyl, and alkyl halide functional groups, broadening the scope of alkene hydrosilylation with earth-abundant metal catalysts.
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