Abstract
A new method for the synthesis of bisbenzo[c]pyrylium salts was developed. The new method is based on the acylation of 1,4-bis(3,4-dimethoxyphenylacetyl)benzene with carboxylic acid anhydrides in the presence of perchloric acid or with carboxylic acids in polyphosphoric acid.
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G. N. Dorofeenko, E. I. Sadekova, and E. V. Kuznetsov, The Preparative Chemistry of Pyrylium Salts [in Russian], Izd. Rostovsk. Gosudarstv. Univ., Rostov-on-Don (1972).
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G. N. Dorofeenko, E. V. Kuznetsov, and E. I. Sadekova, Khim. Geterotsikl. Soedin., No. 4, 454 (1972).
G. N. Dorofeenko and E. I. Sadekova, Khim. Prir. Soedin., No. 5, 714 (1977).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 600–602, May, 1987.
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Dulenko, V.I., Nikolyukin, Y.A. Method for the synthesis of bisbenzo[c]pyrylium salts. Chem Heterocycl Compd 23, 493–495 (1987). https://doi.org/10.1007/BF00476372
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DOI: https://doi.org/10.1007/BF00476372