A CONVENIENT SYNTHESIS OF TETRAHYDRO-1<i>Н</i>-THIENO- [3,2-<i>с</i>]PYRAZOLE 4,4-DIOXIDES

Authors

  • Ирина Е. Ефремова Herzen State Pedagogical University of Russia, 48 Moyka River Embankment, Saint Petersburg 191186, Russia
  • Анна В. Серебрянникова Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky Ave., Petergof, Saint Petersburg 198504, Russia
  • Лидия В. Лапшина S. M. Kirov Military Medical Academy, 6 Akademika Lebedeva St., Saint Petersburg 194044, Russia
  • Владислав В. Гуржий Saint Petersburg State University, 7/9 University Embankment, Saint Petersburg 199034, Russia
  • Аркадий Е. Рябинин Herzen State Pedagogical University of Russia, 48 Moyka River Embankment, Saint Petersburg 191186, Russia

DOI:

https://doi.org/10.1007/5155

Keywords:

pyrazolidines, pyrazolines, sulfolanes, thieno[2, 3-d]pyrazole 4, 4-dioxides, oxidation.

Abstract

The reaction of oxidation of 3-aryl-6a-methyl-6-nitrohexahydrothieno[2,3-d]pyrazole 4,4-dioxides by bromine was used to synthesize their derivatives 3-aryl-6a-methyl-6-nitro-3a,5,6,6a-tetrahydro-1H-thieno[3,2-c]pyrazole 4,4-dioxides, the structure of which was established by IR, 1H, 13C, 1H–13C HMQC, 1H–13C HMBC spectroscopy and X-ray structural analysis.

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Published

2019-09-17

Issue

Vol. 55 No. 9 (2019)

Section

Short Communications