| Abstract |
Facile gold-catalyzed hydrohydrazidation of alkynes with various hydrazides (RCONHNH2)-C-2 (R = Alk or Ar; including those with an additional nudeophilic moiety) in the presence of Ph3PAuNTf2 (6 mol \%) leading to a wide range of substituted keto-N-acylhydrazones (18 examples) in excellent to good yields (99-66\%) is reported. This novel metal-catalyzed coupling proceeds under mild conditions (chlorobenzene, 60 degrees C), exhibits high functional group tolerance, and is insensitive to the electronic and steric effects of the substituents in the reactants. |
