Enantioselective direct aminalization with primary carboxamides catalyzed by chiral ammonium 1,1′-binaphthyl-2,2′-disulfonates

A highly effective catalytic enantioselective direct aminal synthesis was developed. Chiral ammonium 1,1'-binaphthyl-2,2'-disulfonates, which were prepared in situ from (R)-BINSA and achiral amines, promoted the enantioselective addition of primary amides to aromatic aldimines.