(PPh3)AuCl/AgOTf-catalyzed intermolecular hydroamination of alkynes with sulfonamides to form N-sulfonyl imines
In the presence of a catalytic amount of (PPh3)AuCl and AgOTf, intermolecular hydroamination of unactivated alkynes with sulfonamides has been shown to proceed and give N-sulfonyl ketimines in medium to excellent yields.