Low‐coordinate cobalt(0)
<i>N</i>
‐heterocyclic carbene complexes as catalysts for hydrosilylation of alkynes
作者:Wenli Bai、Jian Sun、Dongyang Wang、Sheng‐Di Bai、Liang Deng
DOI:10.1002/aoc.6694
日期:2022.6
cobalt-based catalysts for hydrosilylation reactions, cobalt (II) and cobalt(I) complexes are the extensively studied ones. In contrast, explorations on cobalt(0) complexes are relatively rare. Presented herein is the investigation on the catalytic performance of low-coordinate cobalt(0) N-heterocyclic carbene (NHC) complexes in the hydrosilylation reaction of alkynes, which disclosed the fine performance
在开发用于氢化硅烷化反应的钴基催化剂的巨大努力中,钴(II)和钴(I)配合物是被广泛研究的催化剂。相比之下,对钴(0)配合物的探索相对较少。本文介绍了低配位钴 (0) N-杂环卡宾 (NHC) 配合物在炔烃氢化硅烷化反应中的催化性能研究,揭示了 [(CyIDep)Co( η 2 -CH 2 CHSiMe 3 ) 2 ] (CyIDep 表示在咪唑骨架上带有稠合环己基的 1,3-双(2',6'-二乙基苯基)咪唑-2-亚叉基)催化合成-将一系列对称和不对称的内炔烃与 H 2 SiPh 2相加,产生具有高区域选择性的乙烯基硅烷。机理研究表明,催化反应可能在钴 (0)/钴 (II) 循环中进行,并且高选择性受 NHC 配体的空间性质控制。