Amino-salicylaldimine–palladium(II) complexes: New and efficient catalysts for Suzuki and Heck reactions

A series of amino-salicylaldimine–palladium(II) complexes bearing 5-methyl-3-(R-1-ylmethyl)-salicylaldimine ligands (R = morpholine, piperidine, pyrrolidine, 4-methylpiperazin, diisopropylamine) have been prepared and characterized by IR, 1H NMR and elemental analysis. Crystal structure details of complex 2b have been confirmed by X-ray structure analysis. The obtained Pd(II) complexes were found to be effective catalysts for the Suzuki and Heck cross-coupling reactions which could be carried out in the undried solvent under air.

A series of new Pd(II) complexes bearing 5-methyl-3-(R-1-ylmethyl)-salicylaldimine (R = morpholine, piperidine, pyrrolidine, 4-methylpiperazine, diisopropylamine) have been synthesized and structurally analyzed. These palladium complexes exhibited good catalytic activity in the Suzuki–Miyaura and Heck–Mizoroki coupling reactions in DMF under air.Figure optionsDownload as PowerPoint slide