作者:Hashim F. Motiwala、Belgin Gülgeze、Jeffrey Aubé
DOI:10.1021/jo3012336
日期:2012.8.17
bonds has been observed via copper-catalyzed reactions of oxaziridines. The oxidation proceeded with a variety of substrates, primarily comprising allylic and benzylic examples, as well as one example of an otherwise unactivated tertiary C–H bond. The mechanism of the reaction is proposed to involve single-electron transfer to the oxaziridines to generate a copper-bound radical anion, followed by hydrogen
通过铜催化的恶唑烷反应,观察到了活化的C–H键的高度区域选择性和化学选择性氧化。氧化过程发生在多种底物上,主要包括烯丙基和苄基实例,以及未活化的叔键C–H的一个实例。提出该反应的机理涉及单电子转移到恶唑烷上以生成铜结合的自由基阴离子,随后氢原子抽象并坍塌成产物,并通过最终的单电子转移事件使催化剂再生。TEMPO的自由基捕获实验支持了烯丙基自由基中间体的参与。