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A Convenient Method for Synthesizing 2-Aryl-3-hydroxy-4-oxo-4H-1-benzopyrans or Flavonols

André Fougerousse, Emmanuel Gonzalez and Raymond Brouillard

*Laboratoire de Chimie des Polyphénols, UMR 7509 du CNRS, Université Louis Pasteur, 4, rue Blaise Pascal, 67008 Strasbourg, France

A. Fougerousse, E. Gonzalez, R. Brouillard, J. Org. Chem., 2000, 65, 583-586.

DOI: 10.1021/jo990735q

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A Baker-Venkataraman rearrangement followed by a quick cyclization-dehydration step and a saponification provides flavonols in good yields.

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Key Words

Baker-Venkataraman Rearrangement, Flavones

ID: J42-Y2000