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Chemistry of Heterocyclic Compounds

, Volume 20, Issue 11, pp 1226–1230 | Cite as

Pyrylocyanines. 20. Symmetrical methoxy-substituted tetraphenyl-pyrylocyanines and their heteroanalogs

  • I. M. Gavrilyuk
  • A. A. Ishchenko
  • M. A. Kudinova
  • A. I. Tolmachev
Article
  • 37 Downloads

Abstract

Symmetrical tetraphenyl-substituted α-pyrylo-, α-thiopyrylo-, and α-pyridotrimethylcyanines, containing electron donor methoxy groups in two or four phenyl rings, were synthesized. Using the methods of quantum chemistry, the characteristics of the long-wave absorption bands of the dyes obtained are discussed. The independence of the theoretical conclusions from the selection of the quantum chemical parameters was demonstrated. The hypothesis of greater participation of the carbon-carbon bonds of the oxygen- and especially the sulfur-containing heteroresidues in comparison with the nitrogen-containing residues in the general system of conjugation is confirmed.

Keywords

Oxygen Organic Chemistry Absorption Band Phenyl Electron Donor 
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 1985

Authors and Affiliations

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

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