Article révisé par les pairs
Résumé : A broadly applicable copper catalyst for photoredox transformations of organic halides is reported. Upon visible light irradi-ation in the presence of catalytic amounts of [(DPEphos)(bcp)Cu]PF6 and an amine, a range of unactivated aryl and alkyl halides were shown to be smoothly activated, through a rare Cu(I)/Cu(I)*/Cu(0) catalytic cycle. This complex was shown to be remarkably efficient to catalyze a series of radical processes including reductions, cyclizations and direct arylation of arenes.