Reactions of 2,2′-dichloro-3,3′-diquinolinyl sulfide 1 with ammonia derivatives and various primary alkylamines and arylamines proceeded as a thiazine ring closure to form linear annulated pentacyclic 6H-diquinothiazine 2H and 6-substituted derivatives 2 with alkyl, alkylaryl, aryl and heteroaryl substituents in moderate to good yields. Reaction with 2-chloroethylamine did not stop at the formation
2,2'-二
氯-3,3'-二
喹啉基
硫化物1与
氨衍
生物以及各种伯烷基胺和芳基胺的反应以
噻嗪环封闭方式进行,形成线性环化的五环6 H-二喹
噻嗪2H和6-取代的衍
生物2与烷基,烷基芳基,芳基和杂芳基取代基的产率中等至良好。与
2-氯乙胺的反应并未停止于半芥末衍
生物2k的形成,而是生成了亚乙基二喹
硫唑鎓盐11。6 ħ -Diquinothiazine 2H是Ñ烷基化和Ñ -arylated,得到6-取代的衍
生物2。关键的底物1是通过1,4-二
硫杂
环丁烷的开环和进一步的转化从其他杂
戊烯3和4 获得的。对-
硝基苯基二喹
噻嗪2i的X射线分析显示出意外的平面
噻嗪环。