Light-Mediated Dual Phosphine-/Copper-Catalyzed Atom Transfer Radical Addition Reaction
作者:Oleg V. Fedorov、Sofya I. Scherbinina、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1021/acs.joc.9b01649
日期:2019.9.6
The atom transfer radical addition reaction catalyzed by triphenylphosphine and copper(I) halide is described. The reaction proceeds under irradiation with 365 nm light using a light-emitting diode and was performed in regular glassware. The proposed mechanism involves the formation of quaternary phosphonium salt, which undergoes single electron reduction by copper(I) salt via photo-induced electron
描述了由三苯基膦和卤化铜(I)催化的原子转移自由基加成反应。该反应在使用发光二极管的365nm光的照射下进行,并且在常规玻璃器皿中进行。所提出的机理涉及形成季phospho盐,该季phospho盐通过光诱导的电子转移被铜(I)盐进行单电子还原。该方法适用于末端烯烃和活化的有机卤化物,例如溴乙酸和碘乙酸与溴乙腈的酯。宝石-Difluorinated苯乙烯,为此原子转移反应是罕见的,也被证明是用于该膦/铜催化协议的良好底物。