Reaction of 3-cyano-quinolin-2(1H)-thione (II) with ω-bromoacetophenones gave 3-amino-2-aroyl-thieno[2,3-b]quinolines (IVa-IVd). Whereas, interaction of II with chloroacetanilides yielded the corresponding thioesters Va-Vc which cyclized into 3-amino-2-arylcarbamoylthiene[2,3-b]quinolines (VIa-VIc) on treatment with ethoxide. Compounds VIa-VIc were reacted with nitrous acid, triethyl orthoformate and carbon disulfide to afford the fused polycyclic compounds VIIa-VIIc, VIIIa-VIIIc and IXa-IXc, respectively. Also treatment of IXa-IXc with ethyl iodide gave 3-ethylthio derivatives Xa-Xc. Moreover, refluxing of VIa-VIc with acetic anhydride resulted in the formation of oxazinone XI which recyclized into pyrimidinones XIIIa-XIIIc upon reaction with aromatic amines.
3-氰基喹啉-2(1H)-
硫酮(II)与ω-
溴代
苯乙酮反应生成3-
氨基-2-酰基
噻吩[2,3-b]
喹啉(IVa-IVd)。而II与
氯代
乙酰苯胺的相互作用产生相应的
硫酯(Va-Vc),在
乙醇钠处理后环化为3-
氨基-2-芳基
氨基甲酰
硫醚[2,3-b]
喹啉(VIa-VIc)。化合物VIa-VIc与
亚硝酸、三乙基正
甲酸酯和
二硫化碳反应,得到融合的
多环化合物VIIa-VIIc、VIIIa-VIIIc和IXa-IXc。另外,IXa-IXc与
碘化乙基处理生成3-乙
硫基衍
生物Xa-Xc。此外,VIa-VIc与
乙酸酐回流反应形成
噁唑酮XI,与芳香胺反应后再循环生成
嘧啶酮XIIIa-XIIIc。