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25. Oxidation of Heterocyclic β-Dicarbonyl Compounds
Stadlbauer W., Kappe Th. Heterocycles 21 (1984) 653

Abstract: Oxidation of 4-hydroxy-2-quinolones (1) leads to 3-hydroxy-3-substituted quinoline-2,4-diones (2). Extension of this reaction to barbituric acids 4 gives 5-hydroxybarbituric acids 5.


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