Regioselective Synthesis of Methyl 2,3-Dihydro-2-aryl Benzofuran-3-Carboxylates Using Thallium(III) Nitrate
- 1 March 1993
- journal article
- research article
- Published by Taylor & Francis in Synthetic Communications
- Vol. 23 (5) , 585-590
- https://doi.org/10.1080/00397919308009816
Abstract
Flavanones (1a–d) undergo smooth ring contraction with thallium(III) nitrate in presence of perchloric acid and trimethyl orthoformate resulting in the formation of methyl 2,3-dihydro-2-arylbenzofuran-3-carboxylates (2a–d) in good yields. The mechanism of this oxidation has also been discussed.Keywords
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