Chemistry of Heterocyclic Compounds

, Volume 19, Issue 3, pp 314–318 | Cite as

Reaction of 1-aminobenzimidazoles with β-diketones. Synthesis of pyridazino[1,6-a]benzimidazoles

  • V. V. Kuz'menko
  • V. N. Komissarov
  • A. M. Simonov


The action of acetyl- and benzoylacetone on 1-aminobenzimidazoles in the presence of catalytic amounts of zinc chloride was used to synthesize 1-ylidene derivatives, which at higher temperatures undergo thermal cyclization to 2,4-disubstituted pyridazino[1,6-a]benzimidazoles.


Chloride Zinc Organic Chemistry Acetyl Thermal Cyclization 
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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • V. V. Kuz'menko
    • 1
  • V. N. Komissarov
    • 1
  • A. M. Simonov
    • 1
  1. 1.Scientific-Research Institute of Physical and Organic Chemistry at Rostov State UniversityRostov-on-Don

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