The reaction of trans-[PtCl2(NCR)2] [R1 = CH2CO2Me (1a), R2 = CH2Cl (1b)] with pyrroline N-oxide −O+N=CHCH2CH2CMe2 (2) furnishes, via [2+3] cycloaddition, new fused bicyclic D4-1,2,4-oxadiazoline platinum(II) complexes trans-[PtCl2N=C(R)ONC(H)CH2CH2CMe2}2] (R1 = CH2CO2Me (3a), R2 = CH2Cl (3b)). Compounds 3a and 3b were refluxed in CH2Cl2 to afford the derived ketoimine platinum(II) complexes trans-[PtCl2N(C(=O)(R))=CCH2CH2C(Me2)NH}2] (R1 = CH2CO2Me (4a), R2 = CH2Cl (4b)), respectively, as a result of the N-O bond cleavage of the oxadiazoline ring in compound 3. All the platinum complexes were characterized by IR, 1H and 13C NMR spectroscopies, ESI+-MS and elemental analyses.
反式-[PtCl2(NCR)2] [R1 = CH2CO2Me (1a),R2 =
CH2Cl (1b)]与
吡咯啉 N-氧化物 -O+N=CHCH2CH2CMe2 (2)通过[2+3]环加成反应生成、新的融合双环
D4-
1,2,4-恶二唑啉
铂(II)配合物 trans-[PtCl2N=C(R)ONC(H)CH2CH2CMe2}2](R1 = CH2CO2Me (3a),R2 = (3b))。化合物 3a 和 3b 在 2 中回流,分别得到酮
亚胺铂(II)配合物 trans-[PtCl2N(C(=O)(R))=CCH2CH2C(Me2)NH}2] (R1 = CH2CO2Me (4a),R2 = (4b)),这是化合物 3 中噁二唑啉环的 N-O 键裂解的结果。所有
铂络合物都通过红外光谱、1H 和 13C NMR 光谱、ESI+-MS 和元素分析进行了表征。