Development of an efficient solvent free one-pot Heck reaction catalyzed by novel palladium (II) complex-via green approach

A novel 1-glycyl-3-methyl imidazolium chloride–palladium (II) complex [[Gmim]Cl–Pd (II)] was found to be a heterogeneous catalyst for an efficient Heck reaction with good to excellent yield under solvent free condition. Tetra-coordinated palladium complex was prepared by reacting PdCl2 with 1-glycyl-3-methyl imidazolium chloride and its catalytic function invented for the CC bond formation. Spectroscopic evidence of complex has been proved by powder XRD, SEM, FT-IR and AFM. This protocol provides a simple strategy for the generation of a variety of new CC bonds under environmentally benign condition.

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► An efficient [Gmim]Cl–Pd (II) catalyst for Heck–Mizoroki reactions with Et3N in the absence of an organic co-solvent.
► The procedure is easy and does not require special precautions.
► The solid catalyst was simply isolated by separation or centrifugation and was recycled smoothly for several runs without appreciable loss of its catalytic activity.