A simplemethod for the hydrosilylation of olefins by using air‐stable cobalt catalysts is developed. The catalyst system is composed of simple, cheap, and readily available cobalt(II) salts and well‐defined terpyridine derivatives as cocatalysts or ligands, and the hydrosilylation processes can be processed smoothly undermildconditions without either Grignard reagents or NaHBEt3 as activator.
Highly active cobalt complex catalysts used for alkene hydrosilylation
作者:Yu Liu、Jiayun Li、Ying Bai、Jiajian Peng
DOI:10.1002/aoc.6315
日期:2021.9
investigated. FeCl2/1(N1, N1, N2, N2-Tetrakis[(diphenylphosphino)methyl]ethane-1,2-diamine) showed low catalytic activity. MnCl2/1, CrCl3/1 and NiCl2/1 showed some catalytic activity. The CoCl2/N,P-ligand catalyst system showed high activity as well as excellent selectivity (The selectivity of the β-adduct was ~100%.) in the hydrosilylation reaction. CoCl2/1 showed the highest catalytic activity (~ >99.9% conversion
合成了一系列氮膦配体,并研究了在这些配体存在下使用MCl 2催化烯烃的氢化硅烷化反应。FeCl 2 / 1 ( N 1 , N 1 , N 2 , N 2 -Tetrakis[(二苯基膦基)甲基]乙烷-1,2-二胺)显示出低催化活性。MnCl 2 / 1、 CrCl 3 / 1和NiCl 2 / 1表现出一定的催化活性。CoCl 2 / N , P-配体催化剂体系在氢化硅烷化反应中表现出高活性和优异的选择性(β-加合物的选择性为~100%。)。CoCl 2 / 1显示出最高的催化活性(~>99.9% 的 1-辛烯转化率)。此外,未检测到 α-加合物、脱氢硅烷化产物和辛烷。
The synthesis of heterogenous Co‐MOFs and application in the catalytic hydrosilylation of alkenes
Hydrosilylation employing metal–organic frameworks (MOFs) as the catalyst are promising because of their high catalytic reactivity and sustainability of heterogeneouscatalyst. A highly simple and efficient method for the hydrosilylation of olefins catalyzed by an air-stable MOF-cobalt catalysts is developed. This approach is featured by 0.1% of Co-MOFs catalyst with excellent reactivity, recyclability
Synthesis of organosilicon‐containing phosphinyl ligands and application in the iron catalyzed hydrosilylation of olefins
作者:Ying Bai、Jun Liu、Ting Ouyang、Huiling Lan、Jiajian Peng、Jiayun Li
DOI:10.1002/aoc.7493
日期:——
Hydrosilylation of unsaturated C-C bonds with hydrosilanes is very important process to access functional organosillicon compounds. Ligands with phosphorus atoms act as a major role in the hydrosilylation of alkenes. A series of organosilicon-containing phosphinyl ligands were prepared, and the application as ligands for iron catalyzed hydrosilylation of alkenes had been investigated. These catalytic