Abstract
The condensation of hydroxy- and methoxyacetophenones with 1,1,1,3-tetrachloro-3-ethoxypropane or β, β-dichloroacrolein in an acid medium has yielded a number of dichlorodienyl hydroxyphenyl ketones which are converted into the corresponding 2-pyrones in acetic or propionic acids in the presence of phosphoric acid.
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Maevskii, Y.V., Sokolovskaya, S.V. & Komkov, I.P. Phenolic derivatives of 2-pyrone. I.. Chem Heterocycl Compd 4, 435–439 (1971). https://doi.org/10.1007/BF00486749
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DOI: https://doi.org/10.1007/BF00486749