Palladium-catalyzed Heck arylation, one of the most useful reactions to construct carbon–carbon bonds, involves the coupling of aryl halides/pseudohalides with olefins.(1) Heck arylations were typically catalyzed by Pd(0) or Pd(II) with an added phosphine ligand and operating under a Pd(0)/Pd(II) catalytic cycle with the assistance of base to complete the cycle. In a program directed toward synthesis of enamides,(2) especially trisubstituted enamide ...
