Manganese(III) Acetate Mediated Oxidation of Flavanones: A Facile Synthesis of Flavones

Abstract

Oxidation of flavanones (1a–o) with manganese(III) acetate by heating in acetic acid in presence of perchloric acid afforded exclusively flavones (2a–o) by dehydrogenation in almost quantitative yields.

Keywords:

• Manganese(III) acetate
• flavanone
• oxidation
• flavone
• dehydrogenation

Acknowledgments

Authors are grateful to the International Foundation of Science, Sweden, and State Committee on Science, Technology and Environment, Thiruvananthapuram, Government of Kerala, India, for financial support.