Palladium-Catalyzed Mizoroki-Heck Type Reaction with Aryliodine Diacetates Using Hydrazone Ligand
摘要:
We developed a palladium-catalyzed Mizoroki-Heck type reaction of olefins with such hypervalent iodine reagents as iodobenzene diacetate in good to high yields using 2 mol% of a heterocyclic hydrazone (1b)-Pd(OAc)(2) system in NMP under air at 90 degrees C.
We report a dual-tasked methylation based on cooperative palladium/norbornene catalysis. Readily available (hetero)aryl halides (39 iodides and 4 bromides) and inexpensive MeOTs or trimethylphosphate are utilized as the substrates and meth-ylating reagent, respectively. Six types of ipso terminations can modularly couple with this ortho C-H methylation to consti-tute a versatile methylation toolbox
We developed a palladium-catalyzed Mizoroki-Heck type reaction of olefins with such hypervalent iodine reagents as iodobenzene diacetate in good to high yields using 2 mol% of a heterocyclic hydrazone (1b)-Pd(OAc)(2) system in NMP under air at 90 degrees C.