Regioselective synthesis of diazaspiro[4.4]nona‐ and tetrazaspiro[4.5]deca‐2,9‐diene‐6‐one derivatives
作者:Ahmad M. Farag、Yehya M. Elkholy、Korany A. Ali
DOI:10.1002/jhet.5570450134
日期:2008.1
4]nona-2,8-diene-6-one derivatives were synthesised via cycloaddition of nitrilimides to 3-aryliden-2(3H)-furanone derivatives. The formed products react with hydrazine hydrate to give the corresponding pyrazolecarbohydrazide derivatives which undergo intramolecure cyclization upon treatment with HCl/AcOH mixture to affored 1,2,7,8-tetrazaspiro[4.5]deca-2,9-diene-6-one derivatives. Molecular mechanics
几个1,2-二氮杂螺[4,4] nona-2,8-二烯-6-一衍生物是通过将腈类化合物环加成到3-aryliden-2(3H)-呋喃酮衍生物上而合成的。形成的产物与水合肼反应,得到相应的吡唑碳酰肼衍生物,将其用HCl / AcOH混合物处理后进行分子内环化,得到1,2,7,8-四氮杂螺[4.5] deca-2,9-二烯-6-衍生物。化合物8-(4-甲基苯基)-1,3,4-三苯基-7-氧杂-1,2-二氮杂螺[4.4] nona-2,8-二烯-6-one的分子力学能量最小化技术及相关结构参数报告了5a。