Chemistry of Heterocyclic Compounds

, Volume 20, Issue 8, pp 865–869 | Cite as

Structure of 2-amino-4-thiazolinone

  • S. M. Ramsh
  • N. A. Smorygo
  • A. I. Ginak


It was shown by the methods of IR and NMR spectroscopy that 2-amino-4-thiazolinone (“pseudothiohydantoin”) exists in an amino form in the crystalline state and in solutions in dimethyl sulfoxide, water, and trifluoroacetic acid, and in this amino form all the nitrogen-carbon bonds are partially double. In dimethyl sulfoxide and trifluoroacetic acid there is an autoassociation with the formation of dimers. Inhibited rotation of the amino group around the exocyclic nitrogen-carbon bond was detected. The results of a calculation of the IR spectrum of 2-amino-4-thiazolinone according to the force-field method agrees with the experimental data.


Spectroscopy Experimental Data Organic Chemistry Dimethyl Sulfoxide 
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Copyright information

© Plenum Publishing Corporation 1985

Authors and Affiliations

  • S. M. Ramsh
    • 1
  • N. A. Smorygo
    • 1
  • A. I. Ginak
    • 1
  1. 1.Lensovet Leningrad Technological InstituteLeningrad

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