OXIDATIVE CYCLOCONDENSATION OF CYCLIC THIO(SELENO)UREAS. 4. ELECTRONIC EFFECTS OF THE SUBSTITUENTS AND THE MEDIUM

Authors

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

DOI:

https://doi.org/10.1007/8013

Keywords:

8H, 15H-1, 2, 4-thiadiazolo[3, 2-b, 5, 4-b']diquinazoline-8, 15-dione, 2-thioxo-4-quinazolone, quinazoline-2, 4-dione, oxidative cyclocondensation, electronic substituent effects

Abstract

We have studied the electronic effect of substituents, steric factors, the medium, and the nature of the oxidizing agent on oxidative cyclocondensation  of 2-thioxo-4-quinazolone and its substituted derivatives. We have found that electron-donor substituents promote the reaction while electron-acceptor substituents inhibit the reaction.

How to Cite
Mukarramov, N. I.; Urakov, B. A.; Shakhidoyatov, Kh. M.  Chem. Heterocycl. Compd. 2006, 42, 540. [Khim. Geterotsikl. Soedin. 2006, 616.]

For this article in the English edition, see DOI 10.1007/s10593-006-0123-1


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Published

2023-08-30

Issue

No. 4 (2006)

Section

Original Papers