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Chemistry of Heterocyclic Compounds

, Volume 26, Issue 5, pp 538–543 | Cite as

Diazo compounds of the heterocyclic series. 4. Some peculiarities of the diazo coupling of benzimidazole-2-diazonium salts with phenols and their ethers

  • S. N. Kolodyazhnaya
  • L. N. Divaeva
  • R. A. Sogomonova
  • A. M. Simonov
Article

Abstract

The corresponding hydroxy (methoxy)-substituted azobenzimidazoles were obtained by diazo coupling of benzimidazole-2-diazonium salts with phenols and their complete and incomplete ethers in strongly acidic media; in the case of phenol ethers the process is complicated by dealkylation of the methoxy group in the ortho position relative to the azo bridge.

Keywords

Ether Phenol Organic Chemistry Acidic Medium Methoxy 
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 1990

Authors and Affiliations

  • S. N. Kolodyazhnaya
    • 1
  • L. N. Divaeva
    • 1
  • R. A. Sogomonova
    • 1
  • A. M. Simonov
    • 1
  1. 1.Scientific-Research Institute of Physical and Organic ChemistryRostov State UniversityRostov-on-Don

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