Chemistry of Heterocyclic Compounds

, Volume 18, Issue 7, pp 683–689 | Cite as


  • K. N. Zelenin
  • V. A. Khrustalev
  • V. V. Alekseev
  • P. A. Sharbatyan
  • A. T. Lebedev


According to data from the1H and13C NMR spectra in nonpolar media and the mass spectra, alkylidene derivatives of thiobenzhydrazide have a 1,3,4-thiadiazol-2-ine structure rather than a thiobenzhydrazone structure. The products of condensation of thiobenzhydrazide with acetone and anisaldehyde in methanol undergo partial isomerization to thiobenzhydrazones. The hydrochlorides of the compounds under discussion are the corresponding 1,3,4-thiadiazolinium salts, in which the proton is coordinated with the N4, atom. The 2-phenyl-5,5-dimethyl-1,3,4-thiadiazol-2-ine anion has a noncyclic thioenolate structure.


Methanol Acetone Mass Spectrum Organic Chemistry Hydrochloride 
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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • K. N. Zelenin
    • 1
    • 2
  • V. A. Khrustalev
    • 1
    • 2
  • V. V. Alekseev
    • 1
    • 2
  • P. A. Sharbatyan
    • 1
    • 2
  • A. T. Lebedev
    • 1
    • 2
  1. 1.S. M. Kirov Military Medical AcademyLeningrad
  2. 2.M. V. Lomonosov Moscow State UniversityMoscow

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