当前位置：
X-MOL 学术
›
ACS Catal.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Cobalt(I)-Catalyzed Transformation of Si–H Bonds: H/D Exchange in Hydrosilanes and Hydrosilylation of Olefins
ACS Catalysis ( IF 11.3 ) Pub Date : 2023-02-06 , DOI: 10.1021/acscatal.2c06259 Lars Denker 1 , Daniela Wullschläger 1 , Juan Pablo Martínez 2 , Stanisław Świerczewski 2, 3 , Bartosz Trzaskowski 2 , Matthias Tamm 1 , René Frank 1
ACS Catalysis ( IF 11.3 ) Pub Date : 2023-02-06 , DOI: 10.1021/acscatal.2c06259 Lars Denker 1 , Daniela Wullschläger 1 , Juan Pablo Martínez 2 , Stanisław Świerczewski 2, 3 , Bartosz Trzaskowski 2 , Matthias Tamm 1 , René Frank 1
Affiliation
|
The amino imidazolin-2-imine ligand [HAmIm, 1,2-(DippNH)–C6H4–N═C(NiPrCMe)2] is employed in the synthesis of the paramagnetic cobalt(I) arene complex Co(AmIm)(η6-C6H6). The latter was found to be a highly efficient (pre)catalyst in H/D exchange reactions with deuterium (D2) in hydrosilanes. The scope comprises primary to tertiary silanes at a low catalyst loading of 1 mol %. Additionally, the same cobalt(I) arene complex was able to catalyze hydrosilylation reactions of terminal olefins with primary to tertiary silanes at low catalyst loadings of 0.5 mol %. The scope of hydrosilylation includes intramolecular hydrosilylation to produce silacarbocycles and multiple hydrosilylation with primary silanes. The mechanistic investigation includes numerous control experiments for both H/D exchange and hydrosilylation. Isolated (trapped) cobalt(III) hydride silyl complexes (including X-ray crystallographic authentication) are presented for primary to tertiary Si–H entities, which demonstrates a wide scope of Si–H bond activation by the low-valent Co(AmIm) core. The experimental results are strongly corroborated by density functional theory calculations, which explore the possible reaction mechanisms of studied reactions.
中文翻译：
钴 (I) 催化的 Si-H 键转化：氢硅烷中的 H/D 交换和烯烃的氢化硅烷化
氨基咪唑啉-2-亚胺配体 [HAmIm, 1,2-(DippNH)–C 6 H 4 –N=C(N i PrCMe) 2 ] 用于合成顺磁性钴 (I) 芳烃配合物 Co( AmIm)(η 6 -C 6 H 6 )。后者被发现是与氘 (D 2) 在氢硅烷中。范围包括催化剂负载量为 1 mol% 的伯硅烷至叔硅烷。此外，相同的钴 (I) 芳烃络合物能够在 0.5 mol% 的低催化剂负载量下催化末端烯烃与伯硅烷至叔硅烷的氢化硅烷化反应。氢化硅烷化的范围包括分子内氢化硅烷化以产生硅碳环和与伯硅烷的多重氢化硅烷化。机理研究包括大量 H/D 交换和氢化硅烷化的对照实验。分离的（捕获的）钴 (III) 氢化物甲硅烷基配合物（包括 X 射线晶体学鉴定）用于初级到三级 Si-H 实体，这表明低价 Co(AmIm) 具有广泛的 Si-H 键活化核。
更新日期：2023-02-06
中文翻译：
钴 (I) 催化的 Si-H 键转化：氢硅烷中的 H/D 交换和烯烃的氢化硅烷化
氨基咪唑啉-2-亚胺配体 [HAmIm, 1,2-(DippNH)–C 6 H 4 –N=C(N i PrCMe) 2 ] 用于合成顺磁性钴 (I) 芳烃配合物 Co( AmIm)(η 6 -C 6 H 6 )。后者被发现是与氘 (D 2) 在氢硅烷中。范围包括催化剂负载量为 1 mol% 的伯硅烷至叔硅烷。此外，相同的钴 (I) 芳烃络合物能够在 0.5 mol% 的低催化剂负载量下催化末端烯烃与伯硅烷至叔硅烷的氢化硅烷化反应。氢化硅烷化的范围包括分子内氢化硅烷化以产生硅碳环和与伯硅烷的多重氢化硅烷化。机理研究包括大量 H/D 交换和氢化硅烷化的对照实验。分离的（捕获的）钴 (III) 氢化物甲硅烷基配合物（包括 X 射线晶体学鉴定）用于初级到三级 Si-H 实体，这表明低价 Co(AmIm) 具有广泛的 Si-H 键活化核。
京公网安备 11010802027423号