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Chemistry of Heterocyclic Compounds

, Volume 23, Issue 8, pp 846–849 | Cite as

Synthesis of 3-methylpyrido[3,2,1-j,k]carbazolium salts and derived cyanine dyes

  • B. M. Gutsulyak
  • A. V. Turov
  • R. S. Petrovskii
  • M. Yu. Kornilov
Article
  • 142 Downloads

Abstract

When carbazole is heated with formaldehyde and acetone (or with methyl vinyl ketone) in the presence of mineral acid, 3-methylpyrido[3,2-j,k]carbazolium salts form. These react with p-dimethylaminobenzaldehyde, triethyl orthoformate, Michler's ketone, 1-ethylquinolinium iodide, or 1,3,3-trimethyl-2-formylmethyleneindolinium iodide to give the respective cyanine dyes. Deviations of the unsymmetrical dyes and Hückel molecular orbital calculations show that the Brooker basicity of the pyrido[3,2,1-j,k]carbazolium series is lower than that of the 1-phenylquinolinium series.

Keywords

Formaldehyde Acetone Iodide Ketone Vinyl 
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 1988

Authors and Affiliations

  • B. M. Gutsulyak
    • 1
    • 2
  • A. V. Turov
    • 1
    • 2
  • R. S. Petrovskii
    • 1
    • 2
  • M. Yu. Kornilov
    • 1
    • 2
  1. 1.Ivano-Frankovsk Oil and Gas InstituteIvano-Frankovsk
  2. 2.T. G. Shevchenko State UniversityKiev

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