Bench-Stable, Substrate-Activated Cobalt Carboxylate Pre-Catalysts for Alkene Hydrosilylation with Tertiary Silanes
作者:Christopher H. Schuster、Tianning Diao、Iraklis Pappas、Paul J. Chirik
DOI:10.1021/acscatal.6b00304
日期:2016.4.1
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
concerning the selective mono-functionalization of 1,1,3,3-tetramethyldisiloxane (TMDSO) with vinyl-substituted silicon derivatives via the hydrosilylation reaction. Examinations of platinum- and rhodium-based catalysts in the reactions between TMDSO and exemplary vinyl-containing silicon derivatives have enabled appointing the most efficient catalyst, whose application leads to selective partial functionalization
<i>N,N</i>
‐Dimethylformamide‐protected Fe
<sub>2</sub>
O
<sub>3</sub>
Combined with Pt Nanoparticles: Characterization and Catalysis in Alkene Hydrosilylation
disclose a combination of N,N-dimethylformamide (DMF)-protected Fe2O3 nanoparticles (NPs) and Pt NPs catalyst system for the hydrosilylation of various functional alkenes and tertiarysilanes. The catalyst of DMF-protected Fe2O3/Pt NPs can be recycled for five times by a simple extraction. The developed combination Fe2O3/Pt NPs catalyst is effective up to the 1-kilogram scale.
纳米催化:我们公开了N,N-二甲基甲酰胺 (DMF) 保护的 Fe 2 O 3纳米粒子 (NPs) 和 Pt NPs 催化剂体系的组合,用于各种功能性烯烃和叔硅烷的氢化硅烷化。DMF保护的Fe 2 O 3 /Pt NPs催化剂可以通过简单的提取循环使用五次。所开发的 Fe 2 O 3 /Pt NPs 组合催化剂在 1 公斤级有效。