Palladium(II) 3-Iminophosphine Complexes as Intermolecular Hydroamination Catalysts for the Formation of Imines and Enamines

Palladium(II) 3-iminophosphine derivatives were screened as intermolecular hydroamination catalysts, with (3-iminophosphine)(allyl)palladium triflate determined to be the most active for the hydroamination of 1,3-cyclohexadiene and phenylacetylene. The iminophosphine ligands were synthesized by a three-step process and coordinated in an η2 and η1 manner to palladium(II) chloride and (allyl)palladium(II) chloride, respectively.