Regioselective preparation of 6-allyl-7-hydroxycoumarin from 7-allyloxycoumarin via boron halide catalysed ortho-Claisen rearrangement of 4′-allyloxycoumaric acid derivatives
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 2,p. 182-183
- https://doi.org/10.1039/c39860000182
Abstract
An efficient synthesis of 6-allyl-7-hydroxycoumarin, a key intermediate for the preparation of linear coumarins, is described via a regioselective catalysed ortho-Claisen rearrangement of methyl 4′-allyloxy-2′-methoxycinnamate.Keywords
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