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- W2037791381 abstract "The aminolysis of 4-[(4-oxo-4H-1-benzopyran-3-yl)methylene]-2-phenyl-1,3-oxazol-5(4H)-one with diethylamine gave N-[1-(diethylamino)-1-oxo-3-(4-oxo-4H-1-benzopyran-3-yl)prop-2-en-2-yl] benzamide. The hydrolysis of 2-methyl-4-[(4-oxo-4H-1-benzopyran-3-yl)methylene]-1,3-oxazol-5(4H)-one gave the α-keto-acid, which could be converted into amino-acid derivatives. Condensation of 2-methylchromone with diethyl oxalate, 2-formyl-NN-diethylbenzamide, and 2-formylbenzoic acid gave the α-keto-acid, (E)-NN-diethyl-2-[2-(4-oxo-4H-1-benzopyran-2-yl) vinyl]benzamide, and (E)-2-[(4-oxo-4H-1-benzopyran-2-yl) vinyl]benzoic acid, respectively." @default.
- W2037791381 created "2016-06-24" @default.
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- W2037791381 date "1981-01-01" @default.
- W2037791381 modified "2023-10-12" @default.
- W2037791381 title "Aminolysis and hydrolysis of chromonyl oxazolones and some condensation reactions of 2-methylchromone leading to novel chromones" @default.
- W2037791381 doi "https://doi.org/10.1039/p19810000344" @default.
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