2023
DOI: 10.6023/cjoc202207032
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Synthesis of Polysubstituted 2,3-Dihydropyridin-4(1H)-one in Water

Abstract: For the first time, the aqueous [5C+1N] annulation of α-alkenoyl ketene dithioacetals and amines for the synthesis of polysubstituted 2,3-dihydropyridin-4(1H)-ones was developed. In boiling water, [5C+1N] annulation of (E)-2-(bis(ethylthio)methylene)-3-oxo-N,5-diarylpent-4-enamides 1 and organic amines 2 smoothly occurred, and polysubstituted 2,3-dihydropyridin-4(1H)-ones 3 was obtained in moderate yields. Keywords aqueous reaction; ketene dithioacetals; amines; pyridinones 以水为溶剂的水相有机合成, 能显著减少化学污染 物的排放, 利于保护环境… Show more

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