Chemistry of Heterocyclic Compounds

, Volume 7, Issue 7, pp 906–908 | Cite as

Synthesis of thermochromic formazans of a number of benzazoles

  • Yu. A. Rybakova
  • N. P. Bednyagina


In a search for compounds that have thermochromic properties, a group of formazans that contain benzimidazolyl (benzothiazolyl), methyl (phenyl), and hydroxydinitrophenyl (anthraquinoyl) groups in the 1-, 3-, and 5-positions, respectively, were synthesized. Benzimidazolylformazans with a picramic acid residue in the 5-position have thermochromic properties.


Methyl Organic Chemistry Phenyl Benzimidazolyl Benzothiazolyl 
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Copyright information

© Consultants Bureau, a division of Plenum Publishing Corporation 1974

Authors and Affiliations

  • Yu. A. Rybakova
    • 1
  • N. P. Bednyagina
    • 1
  1. 1.S. M. Kirov Ural Polytechnical InstituteSverdlovsk

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