Experimental and computational insights into the mechanism of the copper(<scp>i</scp>)-catalysed sulfonylative Suzuki–Miyaura reaction
作者:Callum G. J. Hall、Helen F. Sneddon、Peter Pogány、David M. Lindsay、William J. Kerr
DOI:10.1039/d3sc01337e
日期:——
mechanistic study into the copper(I)-catalysed sulfonylative Suzuki–Miyaura reaction, incorporating sulfur dioxide, is described. Utilising spectroscopic and computational techniques, an exploration into the individual components of the competing catalytic cycles is delineated, including identification of the resting state catalyst, transmetalation of arylboronic acid onto copper(I), the sulfur dioxide insertion
描述了对铜 ( I ) 催化的磺酰化 Suzuki-Miyaura 反应(掺入二氧化硫)的机理研究。利用光谱和计算技术,对竞争催化循环的各个组成部分进行了探索,包括静止态催化剂的识别、芳基硼酸到铜(I)上的金属转移、二氧化硫插入过程以及芳基的氧化加成。卤化物至 Cu I。研究还调查了已发现的显着副反应,包括竞争性铜 ( II ) 催化机制。这导致了额外的提议和连接 Cu I /Cu II /Cu III催化循环来解释副产物的形成。