Synthesis of spiro-1,2,4-triazole-3-thiones from cycloalkanone thiosemicarbazones, and formation of a cyclic 1,2-dithione


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Hassan A. A. , Mohamed S. K. , Mohamed N. K. , El-Shaieb K. M. A. , Abdel-Aziz A. T. , Mague J. T. , ...More

ARKIVOC, pp.287-303, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2016
  • Doi Number: 10.3998/ark.5550190.p009.425
  • Title of Journal : ARKIVOC
  • Page Numbers: pp.287-303

Abstract

Substituted spiro-heterocycles containing 1,2,4-triazole-3-thione, were formed at room temperature via the reaction of N-cycloalkylidene hydrazinecarbothioamides 2 with benzo- as well as naphthoquinone derivatives. 2,3-Dithioxo-1,4-naphthalene-1,4-dione was synthesized upon heating compounds 2 with 2,3-dichloro-1,4-naphthoquinone. The synthesized compounds were characterized by using different spectroscopic methods and confirmed by single crystal Xray analyses. Rationales for the role of benzo- and naphthoquinone derivatives as well as the conversions are also presented.