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Reaction of 2,4,6-trimethyl- and 2,4,6-triphenylpyrylium perchlorates with heterocyclic amines

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Abstract

2,4,6-Triphenylpyrylium perchlorate reacts with most heterocyclic amines in dimethylformamide to give quaternary pyridinium salts. 2,4,6-Trimethylpyrylium perchlorate forms similar products only up to a certain limit of the basicity of the amine, below which a proton is transferred from theγ-methyl group of the pyrylium salt to the pyridine nitrogen atom of the heteroring to give the perchlorate of the starting heterocycle. The residual 2,6-dimethyl-γ-methylenepyran is polymerized to a hexamer.

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Authors and Affiliations

  1. Scientific-Research Institute of Physical and Organic Chemistry. Scientific-Research Institute of Biology, Rostov State University, Rostov-on-Don

    É. A. Zvezdina, M. P. Zhdanova, V. A. Bren' & G. N. Dorofeenko

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  1. É. A. Zvezdina
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  2. M. P. Zhdanova
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  3. V. A. Bren'
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  4. G. N. Dorofeenko
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1461–1467, November, 1974.

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Zvezdina, É.A., Zhdanova, M.P., Bren', V.A. et al. Reaction of 2,4,6-trimethyl- and 2,4,6-triphenylpyrylium perchlorates with heterocyclic amines. Chem Heterocycl Compd 10, 1285–1290 (1974). https://doi.org/10.1007/BF01175079

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  • DOI: https://doi.org/10.1007/BF01175079

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