Photoinduced Carbamoylarylation of Alkynes with N-Aryl Oxamic Acids

1,2-Difunctionalization of alkynes is an attractive synthetic protocol, because it can achieve a high step economy and provide various complex organic molecules. This study demonstrates the visible-light-induced carbamoylarylation of terminal alkynes using N-aryl oxamic acids as bifunctional reagents. The transformation involves the addition of carbamoyl radicals to alkenes, resulting in 1,4-aryl migration via C(aryl)-N bond cleavage to afford the corresponding arylacrylamides in moderate to good yields.