Intramolecular hydroamination of alkynylamines in aqueous media catalyzed by platinum(II) 1,3,5-triaza-7-phosphaadamantane (PTA) complexes

The water-soluble complexes cis-[PtX2(PTA)2] (X = Cl, Br, I; PTA = 1,3,5-triaza-7-phosphaadamantane) were prepared by the reaction of the aminophosphine PTA with [MX2(COD)] (COD = 1,5-cyclooctadiene). The complexes were found to be active catalysts in the intramolecular hydroamination reaction in water. This is the first reported study of this metal-mediated transformation in aqueous media.