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Chemistry of Heterocyclic Compounds

, Volume 34, Issue 4, pp 438–443 | Cite as

Pyrilocyanines. 36.α-thienyl substituted pyrilo- and thiopyrilocyanines

  • M. A. Kudinova
  • V. V. Kurdyukov
  • A. V. Kachkovskii
  • A. I. Tolmachev
Article
  • 48 Downloads

Abstract

Symmetrical and nonsymmetrical 2,6- (and 4,6-)-di-α-thienyl substituted α- and γ-pyrilo- and thiopyrilocyanines have been synthesized. The effect of changing the phenyl groups for α-thienyl on the electronic absorption spectral parameters of the dyes obtained is discussed. It was found that such a change leads to a decrease in the effective length and increase in the electron donor ability of the hetero fragments containing these groups. The more intense coloring of the thienyl substituted dyes is due to interaction of the polymethine and quasilocal electronic transitions.

Keywords

Organic Chemistry Phenyl Electron Donor Electronic Absorption Electronic Transition 
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 1998

Authors and Affiliations

  • M. A. Kudinova
  • V. V. Kurdyukov
  • A. V. Kachkovskii
  • A. I. Tolmachev

There are no affiliations available

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