Palladium-Catalyzed Amidation of N-Tosylhydrazones with Isocyanides

Aminocarbonylation of N‐tosylhydrazones: The direct formation of ketenimines from carbenes and isocyanides is limited to the reaction of Fischer carbene complexes or some specially stabilized carbenes with isocyanides. A Pd‐catalyzed amidation of N‐tosylhydrazones with isocyanides via a ketenimine intermediate in the presence of water is described. The method offers a general way to synthesize amides from carbonyl compounds through one‐carbon extension (see scheme).