摘要:
                                Phentermine hydrochloride ((PhCH2CMe2NH3)Cl) or L-tryptophan methyl ester hydrochloride ([C8H6NCH2CH(CO2Me)NH3]Cl) reacts with Pd(OAc)(2) in a 1:1 molar ratio to give the cyclometalated complex [Pd-2(kappa(2)-C,N-C6H4CH2CMe2NH2-2)(2)(Y-Cl)(2)] (1) or (S,S)-[Pd-2{kappa(2)-C,N- C8H5NCH2CH(CO2Me)NH2-2}(2)(mu-Cl)(2)] (2), respectively. Reaction of 1 or 2 with iodine affords trans-[PdC](2)(NH2CMe2CH2C6H4I-2)(2)] (3) or trans-(S,S)-[PdCl2{NH2CH(CO2Me)CH2C8H5NI-2}(2)] (4), which further reacts with 1,10-phenanthroline to give [PdCl2(phen)] and the free amine 2-I-phentermine (5) or (S)-2-I-tryptophan methyl ester (6) (overall yields 44 and 51%, respectively, considering phentermine and L-tryptophan methyl ester as starting materials). The crystal structure of complex 3 has been determined by X-ray diffraction studies.