Merging 2,3-butanedione and N-hydroxysuccinimide as visible-light-enabled hydrogen atom transfer catalysts for CC double bond cleavage of 2-cyanoaryl acrylamides toward the synthesis of 4-amino-2-quinolones

The CC double bond cleavage of 2-cyanoaryl acrylamides through merging 2,3-butanedione and N -hydroxysuccinimide as visible-light-enabled hydrogen atom transfer catalysts is effectively established.