Chemistry of Heterocyclic Compounds

, Volume 9, Issue 7, pp 895–900 | Cite as

Dissociative ionization of methyl-substituted hydroxyquinolines

  • N. A. Klyuev
  • R. A. Khmel'nitskii
  • G. A. Mal'tseva
  • L. N. Zhukauskaite
  • A. N. Kost


The mass spectra of the following methyl-substituted hydroxyquinolines have been studied in the range of energies of the ionizing electrons of 15–50 eV: 2-hydroxy-4-methylquinoline, 6-hydroxy-2-methylquinoline, 6-hydroxy-4-methylquinoline, 8-hydroxy-2-methylquinoline, 8-hydroxy-4-methylquinoline, 2,6-dihydroxy-4-methylquinoline, and 4,6-dihydroxy-2-methylquinoline. It has been shown that the processes of dissociative ionization for the series of compounds investigated take place exclusively from the keto forms of the molecular ions. The stability to electron impact is determined largely by the degree of enolization of the structures considered. The values of the selective decomposition are given and a scheme is proposed for the identification of the isomeric methyl-substituted hydroxyquinolines.


Mass Spectrum Organic Chemistry Electron Impact Hydroxyquinolines Dissociative Ionization 
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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • N. A. Klyuev
    • 1
  • R. A. Khmel'nitskii
    • 1
  • G. A. Mal'tseva
    • 1
  • L. N. Zhukauskaite
    • 1
  • A. N. Kost
    • 1
  1. 1.K. A. Timiryazev Moscow Agricultural Academy, Kaunass Medical InstituteM. V. Lomonosov Moscow State UniversityUSSR

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