期刊
MONATSHEFTE FUR CHEMIE
卷 151, 期 2, 页码 223-229出版社
SPRINGER WIEN
DOI: 10.1007/s00706-019-02541-0
关键词
Quinolin-2; 4-diones; 2-[Bis(methylthio)methylene]malononitrile; Furo[3; 2-c]quinolone-3-carbonitriles; Mechanism
Quinoline-2,4-diones reacted with 2-[bis(methylthio)methylene]malononitrile in DMF/Et3N to produce 3-(methylthio)-4-oxo-4,5-dihydrofuro[3,2-c]quinolone-2-carbonitriles and 3-(methylthio)-4-oxo-4,5-dihydrofuro[3,2-c]quinolone-2-carboxamides in state of 2-imino-substituted 4-(methylthio)-5,6-dihydro-2H-pyrano[3,2-c]quinolone-3-carbonitriles. The structures of all new products were proved using NMR, IR, and mass spectral data. The possible mechanism for the reaction is also discussed. Graphic abstract
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