Anaerobic Hydroxylation of C(sp<sup>3</sup>)–H Bonds Enabled by the Synergistic Nature of Photoexcited Nitroarenes
作者:Joshua M. Paolillo、Alana D. Duke、Emma S. Gogarnoiu、Dan E. Wise、Marvin Parasram
DOI:10.1021/jacs.2c13502
日期:2023.2.8
availability of the nitroarene, the sole mediator of the reaction. Because of the anaerobic conditions of the transformation, a noteworthy expansion in substrate scope can be obtained compared to prior reports. Mechanistic studies support that the photoexcited nitroarenes engage in successive hydrogen atom transfer and radical recombination events with hydrocarbons, leading to N-arylhydroxylamine ether intermediates
报道了光激发硝基芳烃介导的脂肪族系统的厌氧 C-H 羟基化。该反应的成功归功于光激发硝基芳烃的双功能特性,它作为 C-H 键活化剂和氧原子源。与以前的方法相比,由于反应的唯一介质硝基芳烃的商业可用性,这种方法具有成本和原子经济性。由于转化的厌氧条件,与之前的报告相比,底物范围显着扩大。机理研究支持光激发的硝基芳烃参与连续的氢原子转移和与碳氢化合物的自由基重组事件,导致N-芳基羟胺醚中间体。这些中间体的自发碎裂导致关键的氧原子转移产物。