Reactions of 2-amino- and 2-hydrazinobenzimidazoles with 2-acyldimedones

Authors

  • А. Я. Страков Riga Technical University, Riga LV-1658
  • M. В. Петрова Riga Technical University, Riga LV-1658
  • Ю. Попелис Latvian Institute of Organic Synthesis, Riga LV-1006
  • А. А. Краснова Riga Technical University, Riga LV-1658
  • И. А. Стракова Riga Technical University, Riga LV-1658

Abstract

The reaction of 2-formyldimedone with 2-amino- and 2-hydrazinobenzimidazoles at 20°C in ethanol gave 2-(2-benzimidazolyl)aminomethylene- and 2-[2-(2-benzimidazolyl)hydrazinomethylene]-5,5-dimethylcylohexanediones, while this reaction carried out in ethanol at reflux in the presence of acid gave 2,2-dimethyl-4-oxo-1,2,3,4-tetrahydroquinazolino(1,2-a]benzimidazole and 1-(2-benzimidazolyl)-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydroindazole, respectively.

How to Cite
Strakov, A. Ya.; Petrova, M. V.; Popelis, J.; Krasnova, A. A.; Strakova, I. A. Chem. Heterocycl. Compd. 1996, 32, 221. [Khim. Geterotsikl. Soedin. 1996, 247.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01165452

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Published

1996-02-25

Issue

No. 2 (1996)

Section

Original Papers