摘要:
The reactions of palladium(II) salts with the primary ferrocenylamines: [(eta(5)-C5H5)Fe{(eta(5)-C5H4)-(CH2)(n)-NH2}] [with n = 1 (1a)(-) or 2 (1b)] are reported. These substrates react with Na-2[PdCl4] in methanol at room temperature giving: [Pd{(eta(5)-C5H5)Fe[(eta(5)-C5H4)(CH2)(n)-NH2]}(2)Cl-2] [with n = 1 (2a) or 2 (2b)] with the ferrocenylamine acting as a monodentate N-donor ligand. However, when compounds 1 are treated with Pd(CH3COO)(2) in toluene, followed by the addition of LiBr and the subsequent treatment of the solids formed with triphenylphosphine, the cyclopalladated complexes: [Pd{(eta(5)-C5H5)Fe[(eta(5)-C5H3)-(CH2)(n)-NH2]}Br(PPh3)] with [n = 1 (3a) or 2 (3b)] were obtained. NMR studies reveal that compounds 3 contain a five- (in 3a) or a six- (in 3b) membered metallacycle fused with the ferrocenyl unit. (C) 1998 Elsevier Science Ltd. All rights reserved.