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Chemistry of Heterocyclic Compounds

, Volume 20, Issue 4, pp 359–362 | Cite as

Pyrylocyanines. 19. Symmetrical pyrylocyanines based on 3,4-polymethylene-2,6-diphenylpyrylium salts

  • M. A. Kudinova
  • V. V. Kurdyukov
  • A. A. Ishchenko
  • A. I. Tolmachev
Article
  • 45 Downloads

Abstract

Symmetrical 2,6,2′,6′-tetraphenyl-substituted pyrylo-4- and thiopyrylo-4-cyanines in which both α positions of the polymethine chain are bonded to the β positions of the heterocyclic residues by ethylene or trimethylene groups were synthesized. The introduction of bridged groupings gives rise to a bathochromic effect, which is greater for ethylene groups than for trimethylene groups.

Keywords

Ethylene Organic Chemistry Trimethylene Ethylene Group Polymethine Chain 
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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Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • M. A. Kudinova
    • 1
  • V. V. Kurdyukov
    • 1
  • A. A. Ishchenko
    • 1
  • A. I. Tolmachev
    • 1
  1. 1.Institute of Organic ChemistryAcademy of Sciences of the Ukrainian SSRKiev

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