Preparation of New Nitrogen-Bridged Heterocycles. 36. Synthesis and Reaction of Dimethyl 4-Thia-1-azatetracyclo[5.4.0.0<sup>5,11</sup>.0<sup>6,8</sup>]undeca-2,9-diene-5,6-dicarboxylate Derivatives
作者:Akikazu Kakehi、Suketaka Ito、Michiharu Mitani、Masamichi Kanaoka
DOI:10.1246/bcsj.67.1646
日期:1994.6
corresponding dimethyl 10aH-pyrido[1,2-d][1,4]thiazepine-1,2-dicarboxylates once separated from the reaction of pyridinium ylides with the same reagent. These 4-thia-1-azatetracyclo[5.4.0.05,11.06,8]undeca-2,9-diene derivatives were smoothly thermolyzed in xylene at the reflux temperature to afford dimethyl phthalate and the corresponding thiazole derivatives in good yields. The structures of these 4
标题化合物,二甲基 4-thia-1-azatetracyclo[5.4.0.05,11.06,8]undeca-2,9-diene-5,6-dicarboxylates,通过各种 1-pyridinio 的反应以低到中等收率制备[(硫代羰基)甲基化物] s 和 3-(1-pyridinio) thiophene-2-thiolates 与乙炔二羧酸二甲酯在氯仿或苯中在室温或高温下。一些化合物也可以通过加热相应的二甲基 10aH-吡啶并 [1,2-d][1,4]thiazepine-1,2-dicarboxylates 一旦从吡啶鎓叶立德与相同试剂的反应中分离出来。这些 4-thia-1-azatetracyclo[5.4.0.05,11.06,8]undeca-2,9-diene 衍生物在二甲苯中在回流温度下顺利热分解,以良好的收率得到邻苯二甲酸二甲酯和相应的噻唑衍生物。这些 4-thia-1-azatetracyclo[5