Abstract
A new method for the synthesis of 6-aryl-substituted pyran-2,4-diones by the acylation of various phenol ethers (anisole, phenol, veratrole) with citric and acetonedicarboxylic acids in the presence of polyphosphoric acid (PPA) has been studied. The mechanism of the reaction and the spectra of the compounds obtained are discussed.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, Vol. 6, No. 8, pp. 1011–1012, August, 1970.
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Kuznetsov, E.V., Dorofeenko, G.N. Synthesis of 6-aryl-substituted pyran-2,4-diones. Chem Heterocycl Compd 6, 939–940 (1970). https://doi.org/10.1007/BF00480616
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DOI: https://doi.org/10.1007/BF00480616