Benzoylierung an 3-8ubstituierten 4-Hydroxy-2-chinolonen und 4-Hydroxycumarinen / Benzoylation of 3-Substituted 4-Hydroxy-2-quinolones and 4-Hydroxycoumarines
Open Access
- 1 June 1981
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 36 (6) , 739-744
- https://doi.org/10.1515/znb-1981-0617
Abstract
The reaction of 3-aryl- or alkylsubstituted 4-hydroxy-2-quinolones or 4-hydroxycoumarins (3a-k) with benzoylchloride afforded the 4-benzoyloxy-2-quinolones or 4- benzoyloxycoumarines 2a-k. Only in one case the 3,3-disubstituted quinolinedione 4 has been isolated, which rearranges to 2a under thermal or basic conditions.Keywords
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