Abstract
AbstractA visible‐light photoredox catalyzed C−N coupling of quinoxaline‐2(1H)‐ones with azoles in the absence of external photosensitizer has been developed. The protocol employs commercially available pyrazoles and triazoles as amination reagents and shows wide substrate scope, providing the corresponding C3‐position amination products in good yields and high regioselectivity under ambient conditions. Investigations indicate that the starting materials and products can act as photosensitizers avoiding use of additional photocatalyst in an autocatalytic manner. In addition, 1O2 coexists with O2.− from molecular oxygen (3O2) via an energy transfer (ET) and single electron transfer (SET) process during the reaction.
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