Electrochemistry Broadens the Scope of Flavin Photocatalysis: Photoelectrocatalytic Oxidation of Unactivated Alcohols
作者:Wen Zhang、Keith L. Carpenter、Song Lin
DOI:10.1002/anie.201910300
日期:2020.1.2
context of alcohol oxidation. However, to date, the scope of this catalytic methodology has been limited to benzyl alcohols. In this work, mechanistic understanding of flavin-catalyzed oxidation reactions, in either the absence or presence of thiourea as a cocatalyst, was obtained. The mechanistic insights enabled development of an electrochemically driven photochemical oxidation of primary and secondary
核黄素衍生的光催化剂在酒精氧化方面已得到广泛研究。然而,迄今为止,这种催化方法的范围仅限于苯甲醇。在这项工作中,获得了在不存在或存在硫脲作为助催化剂的情况下黄素催化氧化反应的机理。这些机理见解使得能够使用一对黄素和二烷基硫脲催化剂开发电化学驱动的伯醇和仲脂肪醇的光化学氧化。电化学可以避免使用 O2 和氧化剂并生成 H2 O2 作为副产物,这两种副产物都会在反应条件下氧化降解硫脲。这种修饰开启了一种新的机制途径,其中未活化醇的氧化是通过硫基介导的氢原子提取来实现的。