Borane–Trimethylamine Complex as a Reducing Agent for Selective Methylation and Formylation of Amines with CO<sub>2</sub>
作者:Yanmeng Zhang、He Zhang、Ke Gao
DOI:10.1021/acs.orglett.1c03023
日期:2021.11.5
borane–trimethylamine complex worked as an efficient reducing agent for the selective methylation and formylation of amines with 1 atm CO2 under metal-free conditions. 6-Amino-2-picoline serves as a highly efficient catalyst for the methylation of various secondary amines, whereas in its absence, the formylation of primary and secondary amines was achieved in high yield with high chemoselectivity. Mechanistic
我们在此报告,硼烷-三甲胺配合物可作为一种有效的还原剂,用于在无金属条件下用 1 个大气压的 CO 2对胺进行选择性甲基化和甲酰化。6-Amino-2-picoline 可作为各种仲胺甲基化的高效催化剂,而在没有它的情况下,伯胺和仲胺的甲酰化以高产率和高化学选择性实现。机理研究表明 6-amino-2-picoline-borane 催化系统像分子内受挫的 Lewis 对一样操作以激活 CO 2。