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Oxidative cyclocondensation of cyclic thio-and selenoureas. 5. 2-Thioxothieno-and 2-thioxopyrido[2,3-d]pyrimidin-4-ones

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

A study was carried out on the oxidative cyclocondensation of 2-thioxothieno-and 2-thioxopyrido[2,3-d]pyrimidin-4-ones. The thiophene ring with excess π-electron density facilitates the reaction, while the pyridine ring with diminished π-electron density hinders it. 2-Thioxothieno-[2,3-d]pyridimin-4-ones were converted into previously unreported 7H,13H-[1,2,4]thiadiazolo-[3,2-b:5,4-b′]bis(thieno[2,3-d]pyridimine-7,13-diones).

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Authors and Affiliations

  1. S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, 700170

    N. I. Mukarramov, B. A. Urakov & Kh. M. Shakhidoyatov

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  1. N. I. Mukarramov
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  2. B. A. Urakov
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  3. Kh. M. Shakhidoyatov
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Correspondence to N. I. Mukarramov.

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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1424–1427, September, 2007.

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Mukarramov, N.I., Urakov, B.A. & Shakhidoyatov, K.M. Oxidative cyclocondensation of cyclic thio-and selenoureas. 5. 2-Thioxothieno-and 2-thioxopyrido[2,3-d]pyrimidin-4-ones. Chem Heterocycl Comp 43, 1210–1213 (2007). https://doi.org/10.1007/s10593-007-0185-8

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  • DOI: https://doi.org/10.1007/s10593-007-0185-8

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