Chemistry of Heterocyclic Compounds

, Volume 7, Issue 7, pp 882–885 | Cite as

Structures and tautomerism of substituted 2-amino-4H-1.3-thiazines

  • P. L. Ovechkin
  • L. A. Ignatova
  • B. V. Unkovskii


A comparison of the IR and UV spectra of 2-alkyl(aralkyl)amino-4H-1,3-thiazines with the spectra of model compounds showed that the amino form of the aminothiazines predominates. The basicities of the synthesized compounds were determined, and the structure of the cation formed on protonation is discussed.


Organic Chemistry Model Compound Thiazine Amino Form 
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Literature cited

  1. 1.
    B. V. Unkovskii, L. A. Ignatova, P. L. Ovechkin, and A. I. Vinogradova, Khim. Geterotsikl. Soedin., 1690 (1970).Google Scholar
  2. 2.
    R. Sayre, J. Am. Chem. Soc., 77, 6689 (1955).Google Scholar
  3. 3.
    A. Comrie, J. Chem. Soc., 3478 (1964).Google Scholar
  4. 4.
    Yu. N. Sheinker, Yu. M. Yutilov, A. M. Simonov, V. N. Sheinker, and E. I. Perel'shtein, Zh. Organ. Khim., 2, 917 (1966).Google Scholar
  5. 5.
    K. Nagarajan and V. Rao, Ind. J. Chem., 7, 964 (1969).Google Scholar
  6. 6.
    W. Anderson and R. Silverstein, Anal. Chem., 37, 1417 (1965).Google Scholar
  7. 7.
    M. I. Kabachnik, V. A. Gilyarov, B. A. Korolev, and T. A. Raevskaya, Izv. AN SSSR, Otd. Khim. Nauk, 772 (1970).Google Scholar
  8. 8.
    A. Albert and E. Serjeant, Ionization Constants of Acids and Bases, Methuen (1962).Google Scholar
  9. 9.
    R. Mathes, F. Steward, and F. Swedish, J. Am. Chem. Soc., 70, 1452 (1948).Google Scholar

Copyright information

© Consultants Bureau, a division of Plenum Publishing Corporation 1974

Authors and Affiliations

  • P. L. Ovechkin
    • 1
  • L. A. Ignatova
    • 1
  • B. V. Unkovskii
    • 1
  1. 1.M. V. Lomonosov Moscow Institute of Precision Chemical EngineeringUSSR

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