On the preparation of 2-benzopyrylium-4-oxide and its cycloaddition properties
- 1 January 1984
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 11,p. 702-703
- https://doi.org/10.1039/c39840000702
Abstract
Treatment of 1-acetoxy-1H-2-benzopyran-4-one with either base or heat generates the parent 2-benzopyrylium-4-oxide system which gives intermolecular cycloadducts with a variety of dipolarophiles, including olefins.Keywords
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