Fig. 7: Mechanistic related experiments.

a Radical intermediate experiment. b Competition experiments using different aryl sulfonyl chlorides. c Intermolecular competition experiment between triethyl amine and d15-triethyl amine.

a Radical intermediate experiment. b Competition experiments using different aryl sulfonyl chlorides. c Intermolecular competition experiment between triethyl amine and d15-triethyl amine.