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- W2289059905 abstract "Benzoylpyruvic ester reacts with dinucleophiles 1,2-diaminoarenes, 2-aminohydroxyarenes, 2,3-diaminopyridine, 1,2-ethylenediamine, and 1,2-diaminocyclohexane to form the corresponding quinoxaline, 1,4-benzoxazine, and pyrazine derivatives. A facile synthesis of substituted quinoxalines and 1,4-benzoxazines catalyzed by NaHSO 4 at room temperature reaching very high yields is reported. The structure of the resulting products was confirmed by determination of the melting point and spectrophotometric techniques such as IR and 1 H-NMR, and in some cases using 13 C-NMR spectroscopy." @default.
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- W2289059905 date "2010-01-01" @default.
- W2289059905 modified "2023-09-26" @default.
- W2289059905 title "Reactions of 2,4-dioxo-4-phenylbutanoates With Dinucleophiles in Mild Condition" @default.
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