Open Access
CC BY-NC-ND 4.0 · Synthesis 2023; 55(08): 1221-1226
DOI: 10.1055/s-0042-1751401
paper

An Efficient Catalyst-Free Direct Approach to 5-Polyfluoroalkyl-1,2,4-triazole-3-thiones

Authors

  • Oksana M. Holovko-Kamoshenkova

    a   Uzhhorod National University, Faculty of Chemistry, Department of Organic Chemistry, Narodna ploshcha 3, 88000 Uzhhorod, Ukraine
    b   Charles University, Faculty of Science, Department of Organic Chemistry, Hlavova 8, 12843 Praha, Czech Republic
  • Mikhailo V. Slivka

    a   Uzhhorod National University, Faculty of Chemistry, Department of Organic Chemistry, Narodna ploshcha 3, 88000 Uzhhorod, Ukraine
  • Radim Hrdina

    b   Charles University, Faculty of Science, Department of Organic Chemistry, Hlavova 8, 12843 Praha, Czech Republic
  • Vyacheslav N. Baumer

    c   SSI ‘Institute for Single Crystals’ NASU, 61001 Kharkiv, Ukraine
  • Nataliya I. Korol

    a   Uzhhorod National University, Faculty of Chemistry, Department of Organic Chemistry, Narodna ploshcha 3, 88000 Uzhhorod, Ukraine
  • Liubov V. Sokolenko

    d   Institute of Organic Chemistry NASU, 01001 Kyiv, Ukraine
  • Vasil G. Lendel

    a   Uzhhorod National University, Faculty of Chemistry, Department of Organic Chemistry, Narodna ploshcha 3, 88000 Uzhhorod, Ukraine

This study was partially supported by the Ministry of Education and Science of Ukraine (State Budget Projects 0119U100232 and 0120U100431).


Graphical Abstract

Abstract

An easy to handle high-efficient approach to 5-polyfluoroalkyl-1,2,4-triazole-3-thiones (11 examples, up to 91% yield) is reported. The tautomerism of thione and thiol forms for the obtained products is discussed. A one step procedure for 6,6-dimethyl-3-(trifluoromethyl)-5,6-dihydro[1,3]thiazolo[2,3-c][1,2,4]triazole formation from trifluoroacetic acid and 4-methallylthiosemicarbazide has been developed. The structures of the products were unambiguously determined by complex NMR investigation and by single crystal X-ray diffraction.

Supporting Information



Publication History

Received: 02 January 2022

Accepted after revision: 28 November 2022

Article published online:
05 January 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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