OXIDATIVE CYCLOCONDENSATION OF CYCLIC THIO- AND SELENOUREAS. 5. 2-THIOXOTHIENO- AND 2-THIOXOPYRIDO[2,3-<i.d</i>]PYRIMIDIN-4-ONES

Authors

  • Н. И. Мукаррамов S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent 700170
  • Б. А. Ураков S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent 700170
  • Х. М. Шахидоятов S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent 700170

DOI:

https://doi.org/10.1007/7405

Keywords:

pyrido[2, 3-d]pyrimidine-2, 4-diones, 7H, 13H-[1, 2, 4]thiadiazolo[3, 2-b, 5, 4-b']bis(thieno-[2, 3-d]pyrimidine-7, 13-diones), 2-thioxopyrido[2, 3-d]pyrimidin-4-ones, 2-thioxothieno[2, oxidative cyclocondensation

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).

How to Cite
Mukarramov, N. I.; Urakov, B. A.; Shakhidoyatov, Kh. M.  Chem. Heterocycl. Compd. 2007, 43, 1210. [Khim. Geterotsikl. Soedin. 2007, 1424.]

For this article in the English edition see DOI 10.1007/s10593-007-0185-8


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Published

2023-01-30

Issue

No. 9 (2007)

Section

Original Papers