Cooperative Catalytic Activation of Si−H Bonds: CO<sub>2</sub>-Based Synthesis of Formamides from Amines and Hydrosilanes under Mild Conditions
作者:Rongchang Luo、Xiaowei Lin、Yaju Chen、Wuying Zhang、Xiantai Zhou、Hongbing Ji
DOI:10.1002/cssc.201601490
日期:2017.3.22
insertion of CO2 to form the active silyl formats, thereby leading to excellent catalytic performance at a low catalyst loading. Furthermore, the bifunctional Zn(salen) complexes, with two imidazolium‐based ionic‐liquid (IL) units at the 3,3′‐position of salen ligand, acted as intramolecularly cooperative catalysts, and the solvent‐regulated separation resulted in facile catalyst recycling and reuse.
成功开发了一种简单的协同催化体系,用于在环境条件下将胺与CO 2和氢硅烷进行无溶剂的N-甲酰化反应,该系统由Zn(salen)催化剂和季铵盐组成。由于路易斯碱和过渡金属中心(LB-TM)之间的分子间协同作用,这些市售的二元组分有效地激活了Si-H键,并随后促进了CO 2的插入。形成活性甲硅烷基形式,从而在低催化剂负载下导致出色的催化性能。此外,双功能Zn(salen)配合物在Salen配体的3,3'位带有两个咪唑基离子液体(IL)单元,充当分子内协作催化剂,并且溶剂调节的分离导致了催化剂的合成回收和再利用。