Oxidative cyclocondensation of thio(seleno)amides and ureas. 1. 2-thioxo-4-quinazolone

Authors

  • Х. M. Шахидоятов Institute of Plant Chemistry, Uzbek Academy of Sciences, Tashkent 700170
  • Б. А. Ураков Institute of Plant Chemistry, Uzbek Academy of Sciences, Tashkent 700170
  • Н. И. Мукаррaмов Institute of Plant Chemistry, Uzbek Academy of Sciences, Tashkent 700170
  • M. А. Аширматов Institute of Plant Chemistry, Uzbek Academy of Sciences, Tashkent 700170
  • В. П. Брусков Institute of Plant Chemistry, Uzbek Academy of Sciences, Tashkent 700170

Abstract

It has been found for the first time that 2-thioxo-4-quinazolone in the presence of acid catalysts in dimethyl sulfoxide is converted to 8H,15H-1,2,4-thiadiazolo[3,2-b:5,4-b′]diquinazoline-8,15-dione. The reaction proceeds via oxidative cyclocondensation. The formation of this structure in preference to five other proposed isomers is substantiated using quantum-chemical methods.

How to Cite
Shakhidoyatov, K. M.; Urakov, B. A.; Mukarramov, N. I.; Ashirmatov, M. A.; Bruskov, V. P. Chem. Heterocycl. Compd. 1996, 32, 728. [Khim. Geterotsikl. Soedin. 1996, 845.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01164875

Downloads

Published

1996-06-25

Issue

No. 6 (1996)

Section

Original Papers