Abstract
Modified methods for the synthesis of substituted 2- and 4-carboxypyrylium perchlorates and the necessary diphenacylacetic acids are proposed.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 162–166, February, 1981.
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Kholodova, N.V., Andreichikov, Y.P. & Dorofeenko, G.N. Synthesis of substituted 2- and 4-carboxypyrylium salts. Chem Heterocycl Compd 17, 109–112 (1981). https://doi.org/10.1007/BF00507235
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DOI: https://doi.org/10.1007/BF00507235