Chemistry of Heterocyclic Compounds

, Volume 4, Issue 3, pp 349–352 | Cite as

Cyanine dyes from seven-membered heterocyclic systems

V. Dyes in the benzo[b]cyclohexano[f]- and -[e]-1,4-thiazepine series
  • L. K. Mushkalo
  • N. K. Mikhailyuchenko


The condensation of o-aminothiophenol with tetrahydroacetophenone, 2-ethylidenecyclohexanone, and 2-benzylidenecyclohexanone and also the condensation of N-methyl-o-aminothiophenol with 2-benzylidenecyclohexanone has given the bases of derivatives of benzo[b]cyclohexano[f]- and -[e]-1,4-thiazepines. From the hydrochlorides, perchlorates, and quaternary salts of these bases, cyanine dyes have been synthesized. The dyes—norcyanines—exhibit solvatochromism, which is explained by the existence of a hydrogen bond between the molecules of the dye and an alcohol.


Hydrogen Alcohol Hydrogen Bond Organic Chemistry Hydrochloride 
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Copyright information

© The Faraday Press, Inc. 1970

Authors and Affiliations

  • L. K. Mushkalo
    • 1
  • N. K. Mikhailyuchenko
    • 1
  1. 1.Kiev State UniversityUSSR

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