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Chemistry of Heterocyclic Compounds

, Volume 7, Issue 7, pp 897–902 | Cite as

Products of the condensation of 5-nitro- and 5,6-dinitro-1,2,3-trimethylbenzimidazolium salts with o-hydroxyaldehydes

  • N. K. Beresneva
  • É. R. Zakhs
  • L. S. Éfros
Article
  • 33 Downloads

Abstract

The corresponding 2-(o-hydroxystyryl)benzimidazoles were obtained by the condensation of aromatic o-hydroxyaldehydes with 5-nitro- and 5,6-dinitro-1,2,3-trimethylbenzimidazolium salts. It was established that derivatives of salicylaldehyde and 5-methoxysalicylaldehyde are capable of intramolecular cyclization in absolute, aprotic solvents to form spiro (benzimidazoline-2,2′-[2H]chromene) derivatives.

Keywords

Chromene Organic Chemistry Benzimidazole Spiro Salicylaldehyde 
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

© Consultants Bureau, a division of Plenum Publishing Corporation 1974

Authors and Affiliations

  • N. K. Beresneva
    • 1
  • É. R. Zakhs
    • 1
  • L. S. Éfros
    • 1
  1. 1.Lensovet Leningrad Technological InstituteUSSR

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