Furoyl and thiophene carbonyl linker pyrazolyl palladium(II) complexes Synthesis, characterization, and evaluation as ethylene oligomerization catalysts
作者:Stephen O Ojwach、Mmboneni G Tshivhase、Ilia A Guzei、James Darkwa、Selwyn F Mapolie
DOI:10.1139/v05-092
日期:2005.6.1
2-thiophene carbonyl chloride with substituted pyrazoles produced the modified pyrazolyl compounds: (3,5-Me2pzCO)-2-C4H3O} (L1), (3,5-Me2pzCO)-2-C4H3S} (L2), (3,5-t-Bu2pzCO)-2-C4H3O} (L3), (3,5-t-Bu2pzCO)-2-C4H3S} (L4), (3,5-Ph2pzCO)-2-C4H3S} (L5), and (pzCO)-2-C4H3O} (L6) in good yields. Reactions of these synthons with [Pd(NCMe)2Cl2] afforded the corresponding mononuclear palladium(II) complexes: [Pd(L1)2Cl2]
2-呋喃酰氯和 2-噻吩碳酰氯与取代的吡唑反应生成改性吡唑基化合物:(3,5-Me2pzCO)-2-C4H3O} (L1), (3,5-Me2pzCO)-2-C4H3S } (L2), (3,5-t-Bu2pzCO)-2-C4H3O} (L3), (3,5-t-Bu2pzCO)-2-C4H3S} (L4), (3,5-Ph2pzCO) )-2-C4H3S} (L5) 和 (pzCO)-2-C4H3O} (L6) 收率良好。这些合成子与 [Pd(NCMe)2Cl2] 的反应得到相应的单核钯 (II) 配合物:[Pd(L1)2Cl2] (1), [Pd(L2)2Cl2] (2), [Pd(L3)2Cl2 ] (3)、[Pd(L4)2Cl2] (4)、[Pd(L5)2Cl2] (5) 和 [Pd(L6)2Cl2] (6) 的产量中等至高。合成的所有化合物均通过 1H NMR、13C NMR