Oxidation of Flavonols Via Oxythallation Using Thallium(III) Acetate(TTA) and Thallium(III) Nitrate(TTN) in Methanol

Om V. Singh Department of Chemistry, Kurukshetra University, Kurukshetra, 132 119, India; Regional Research Laboratory, Jammu Tawi, 180 001

Mahavir S. Khanna Department of Chemistry, Kurukshetra University, Kurukshetra, 132 119, India

Madan P. Tanwar Department of Chemistry, Kurukshetra University, Kurukshetra, 132 119, India

Chandra P. Garg Department of Chemistry, Kurukshetra University, Kurukshetra, 132 119, India

Ram P. Kapoor Department of Chemistry, Kurukshetra University, Kurukshetra, 132 119, India

Abstract

Oxidation of flavonols (1a-f), α-naphthoflavonol (3) and 6-propionylflavonols (5a-b) to 2,3-dimethoxy-3-hydroxy-flavanones (2a-f), 2,3-dimethoxy-3-hydroxy-α-naphthoflavanone (4) and 2,3-dimethoxy-3-hydroxy-6-propionylflavanones (6a-b), respectively, using thallium(III) acetate and thallium(III) nitrate in methanol is described. A mechanistic Scheme of these transformations has also been proposed.

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Oxidation of Flavonols Via Oxythallation Using Thallium(III) Acetate(TTA) and Thallium(III) Nitrate(TTN) in Methanol

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Oxidation of Flavonols Via Oxythallation Using Thallium(III) Acetate(TTA) and Thallium(III) Nitrate(TTN) in Methanol

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