摘要:
[Pd [ CH2C(O)Me I CI],, (1), reacts with P- and N-donor ligands to afford cis- [Pd ( CH2C(O)Me I CI(dppf)] (dppf = bis(diphenylphosphino)ferrocene (2)) and [Pd I CH2C(O)Me I C11-21 (L = pyridine = py (3), 4-Mepyridine = Mepy (4), 4-'Bu-pyridine = 'Bupy (5)). Reaction of 3 or 3-5 with 1 equiv of [TI(acac)] or TITf0 and L affords, respectively, [PdJCH2C(0)Me)(0,0-acac)(py)] (6) or [PdJCH2C(0)MeJL3]Tf0 (L = py (7), Mepy (8), tBupy (9)). The reaction of 9 with I equiv of [Ph2P(CH2)212PhP (triphos) gave [Pd[CH2C(0)MeJ(triphos)]Tf0 (10). Complex 1 reacts with norbomene (nbn) followed by addition of L2 (1:2:1), with 1,5-cyclooctadiene (cod) (1:1) or with 1,1-dimethyl allene (dma) to give [Pdl(nbn)CH2C(O)Me)CIL2] (L2 = 2,2'-bipyridine (bpy) (11), 4,4'-di-tert-butyl 2,2'-bipyridine (dbbpy) (12)), [PdJCH2C(0)Me1CI(cod)] (13), or [Pdf)7 3_CH2CfCH2C(O)Me)CI]2 (14), respectively. The structures of complexes 3, 8, 11, and 13 have been solved by X-ray diffraction studies.