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Synthesis of condensed heterocycles containing a pyrimido[5,4-e][1,3]-thiazine fragment

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The cyclocondensation of 4,6-dichloro-2-methylthiopyridine-5-carbaldehyde and heterocyclic thiones such as 1,2,4-triazole-5-thione, imidazolidine-2-thione, imidazole-2-thione, and 4,5-diphenylimidazole-2-thione in dimethylformamide gave tricyclic heterocycles containing a pyrimido[5,4-e][1,3]thiazine fragment. The reaction of 6-chloro-8-methylthio-5H-pyrimido[5,4-e][1,2,4]triazolo[5,1-b][1,3]thiazin-5-ol with diethylamine, pyrrolidine, and morpholine gave the corresponding 6-dialkylaminopyrimidotriazolothiazines.

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Authors
  1. A. Brukshtus
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  2. S. Tumkevicius
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Additional information

Vilnius University, 2006 Vilnius, Lithuania; e-mail: sigitas.tumkevicius@chf.vu.lt. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 854–856, June, 2000.

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Brukshtus, A., Tumkevicius, S. Synthesis of condensed heterocycles containing a pyrimido[5,4-e][1,3]-thiazine fragment. Chem Heterocycl Compd 36, 751–753 (2000). https://doi.org/10.1007/BF02297687

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  • DOI: https://doi.org/10.1007/BF02297687

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