Abstract

4-Quinolone and 4H-thiochromen-4-one derivatives are readily synthesized in a tandem one-pot manner in good to excellent yields. Starting from (Z)-β-chlorovinyl ketones, an intermolecular nucleo­philic addition of amines or sodium hydrogen sulfide to (Z)-β-chloro­vinyl ketones was followed by elimination of chlorine anion to give Z-enamine or thioenol intermediates, which can be transformed to 4-quinolone or 4H-thiochromen-4-one products through intramolecular S_NAr reaction, respectively.

4-Quinolone and 4H-thiochromen-4-one derivatives are readily synthesized in a tandem one-pot manner in good to excellent yields. Starting from (Z)-β-chlorovinyl ketones, an intermolecular nucleo­philic addition of amines or sodium hydrogen sulfide to (Z)-β-chloro­vinyl ketones was followed by elimination of chlorine anion to give Z-enamine or thioenol intermediates, which can be transformed to 4-quinolone or 4H-thiochromen-4-one products through intramolecular S_NAr reaction, respectively.

中文翻译：

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通过顺序亲核加成-消除-SNAr反应实现无过渡金属一锅串联合成4-喹诺酮和4H-硫代色素-4-酮衍生物

摘要

4-喹诺酮和4 H-硫代色素-4-酮衍生物很容易以串联-一锅方式以良好至极好的产率合成。从（Z）-β-氯乙烯酮开始，分子间亲核加成胺或硫化氢钠到（Z）-β-氯乙烯酮中，然后消除氯阴离子，得到Z-烯胺或硫代烯醇中间体，可以将其转化通过分子内的S _N Ar反应分别生成4-喹诺酮或4 H-硫代色素-4-酮。

4-喹诺酮和4 H-硫代色素-4-酮衍生物很容易以串联-一锅方式以良好至极好的产率合成。从（Z）-β-氯乙烯酮开始，分子间亲核加成胺或硫化氢钠到（Z）-β-氯乙烯酮中，然后消除氯阴离子，得到Z-烯胺或硫代烯醇中间体，可以将其转化通过分子内的S _N Ar反应分别生成4-喹诺酮或4 H-硫代色素-4-酮。