Autoxidation of 3,4′-dihydroxyflavone in dimethylformamide in the presence of potassium t-butoxide results in oxidative cleavage of the hetrocyclic ring to give 2-(4-hydroxybenzoyloxy) benzoic acid and carbon monoxide in excellent yields; this provides a nonenzymic model for the reaction of quercetinas.
A. Nishinaga and T. Matsuura, J. Chem. Soc., Chem. Commun., 1973, 9b DOI: 10.1039/C3973000009B
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