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Chemistry of Heterocyclic Compounds

, Volume 12, Issue 8, pp 886–889 | Cite as

Effect of the medium on the reaction of 4-methyl-7-azaindoline with acetic and trifluoroacetic acids

  • G. G. Dvoryantseva
  • T. N. Ul'yanova
  • Yu. N. Sheinker
  • D. M. Krasnokut-skaya
  • L. N. Yakhontov
Article
  • 22 Downloads

Abstract

The effect of the medium on the equilibrium involved in proton transfer via a hydrogen bond and dissociation of ion pairs in systems composed of 4-methyl-7-azaindoline and acetic and trifluoroacetic acids was examined by means of PMR and IR spectroscopy. The position of the molecular H complex ⇌ ion pair equilibrium depends on the proton-donor-acceptor properties of the solvent and is shifted to favor the ionic form in the order CH3CN < CH2Cl2< CDCl3. A change in the dielectric constant of the medium affects mainly the degree of dissociation of the ion pairs.

Keywords

Hydrogen Spectroscopy Acetic Hydrogen Bond Organic Chemistry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

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    G. G. Dvoryantseva, T. N. Ul'yanova, Yu. N. Sheinker, D. M. Krasnokut-skaya, and L. N. Yakhontov, Khim. Geterotsikl. Soedin., No. 1, 76 (1976).Google Scholar
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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • G. G. Dvoryantseva
    • 1
  • T. N. Ul'yanova
    • 1
  • Yu. N. Sheinker
    • 1
  • D. M. Krasnokut-skaya
    • 1
  • L. N. Yakhontov
    • 1
  1. 1.S. Ordzhonikidze All-Union Scientific-Research Pharmaceutical-Chemistry InstituteMoscow

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