Dehydrogenative Silylation and Crosslinking Using Cobalt Catalysts
申请人:Princeton University
公开号:US20140051822A1
公开(公告)日:2014-02-20
Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient and selective dehydrogenative silylation and crosslinking catalysts.
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
[EN] DEHYDROGENATIVE SILYLATION, HYDROSILYLATION AND CROSSLINKING USING PYRIDINEDIIMINE COBALT CARBOXYLATE CATALYSTS<br/>[FR] SILYLATION DÉSHYDROGÉNANTE, HYDROSILYLATION ET RÉTICULATION À L'AIDE DE CATALYSEURS À BASE DE PYRIDINEDIIMINE-CARBOXYLATE DE COBALT
申请人:MOMENTIVE PERFORMANCE MAT INC
公开号:WO2017019473A1
公开(公告)日:2017-02-02
A process for producing a silylated product comprises reacting a mixture comprising (a) an unsaturated compound containing at least one unsaturated functional group, (b) a silyl hydride containing at least one silylhydride functional group, and (c) a catalyst, optionally in the presence of a solvent, to produce a dehydrogenative silylated product, a hydrosilylated product, or a combination of a dehydrogenative silylated product and a hydrosilylated product, wherein the catalyst is chosen from a pyridine diimine cobalt dicarboxylate complex or a cobalt carboxylate compound, and the process is conducted without pre-activating the catalyst via a reducing agent and/or without an initiator or promoter compound. The present catalysts have been found to be active in the presence of the silyl hydride employed in the silylation reaction.
Phosphinite-Iminopyridine Iron Catalysts for Chemoselective Alkene Hydrosilylation
作者:Dongjie Peng、Yanlu Zhang、Xiaoyong Du、Lei Zhang、Xuebing Leng、Marc D. Walter、Zheng Huang
DOI:10.1021/ja404963f
日期:2013.12.26
characterized. These iron compounds are efficient and selective catalysts for the anti-Markovnikov alkenehydrosilylation of primary, secondary, and tertiarysilanes. More importantly, the system exhibits unprecedented functional group tolerance with reactive groups such as ketones, esters, and amides. Furthermore, the iron-catalyzed alkenehydrosilylation was successfully applied to the synthesis of a valuable
[EN] COBALT CATALYSTS AND THEIR USE FOR HYDROSILYLATION AND DEHYDROGENATIVE SILYLATION<br/>[FR] CATALYSEURS DE COBALT ET LEUR UTILISATION POUR L'HYDROSYLATION ET LA SILYLATION DÉSHYDROGÉNATIVE
申请人:MOMENTIVE PERFORMANCE MAT INC
公开号:WO2015077304A1
公开(公告)日:2015-05-28
Disclosed herein are cobalt complexes containing terpyridine ligands and chelating alkene-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.