Chemistry of Heterocyclic Compounds

, Volume 8, Issue 10, pp 1208–1211 | Cite as

Rearrangement processes in the mass spectra of some 3,5-dimethylisoxazole derivatives

  • K. K. Zhigulev
  • S. D. Sokolov
  • R. A. Khmel'nitskii


The mass spectra of isoxazole and some 3,5-dimethylisoxazole derivatives were investigated. Schemes for the formation of the principal rearranged ions are proposed on the basis of a study of the dissociative ionization of labeled compounds. Examples of the effect of electronic and steric factors on the probability of the existence of different channels for disintegration of the molecular ion are presented. It is shown that the formation of an ion with mass 82 during the dissociative ionization of a number of the investigated compounds occurs via different mechanisms as a function of the nature of the substituents in the 4 position of the isoxazole ring.


Mass Spectrum Organic Chemistry Isoxazole Steric Factor Label Compound 
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Literature cited

  1. 1.
    R. A. Khmel'nitskii, K. K. Zhigulev, S. D. Sokolov, and L. P. Tsurkanova, Zh. Organ. Khim., 6, 2162 (1970).Google Scholar
  2. 2.
    K. K. Zhigulev, R. A. Khmel'nitskii, M. A. Panina, I. I. Grandberg, and B. M. Zolotarev, Khim. Geterotsikl. Soedin., 889 (1972).Google Scholar
  3. 3.
    M. Ohashi, H. Kamachi, H. Kakisawa, A. Tatematsu, H. Yoshirimi, H. Kano, and H. Nakata, Org. Mass Spectrom., 2, 195 (1969).Google Scholar
  4. 4.
    R. A. Khmel'nitskii, K. K. Zhigulev, and S. D. Sokolov, Izv. Sel'skokhoz. Akad. im. Timiryazeva, 1, 197 (1971).Google Scholar

Copyright information

© Consultants Bureau 1974

Authors and Affiliations

  • K. K. Zhigulev
    • 1
  • S. D. Sokolov
    • 1
  • R. A. Khmel'nitskii
    • 1
  1. 1.K. A. Timiryazev Moscow Agricultural AcademyUSSR

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