2-[2-(2,3-DIHYDROBENZIMIDAZOLYLIDENE)]-AND 2-[2-(2,3-DIHYDROPYRIDO[2,3-<i>d</i>]IMIDAZOLYLIDENE)]-5,5-DIMETHYL-1,3-CYCLOHEXANEDIONES

Authors

  • Н. Н. Тонких Riga Technical University, Riga LV-1658
  • А. Я. Страков Riga Technical University, Riga LV-1658
  • М. В. Петрова Riga Technical University, Riga LV-1658
  • В. В. Чернышев M. V. Lomonosov State University, Moscow 119899
  • Х. Схенк Crystallography Laboratory, Amsterdam University 1018 WV, Amsterdam

Keywords:

2-aminocarbonyldimedone, aromatic 1,2-diamines, 2-[2-(2,3-dihydrobenzimidazolylidene)]-5,5-dimethyl-1,3-cylohexanediones

Abstract

The reaction of 2-aminocarbonyl-5,5-dimethyl-1,3-cyclohexanedione with 2,3-diaminopyridine, 1,2-phenylenediamine (and its 4-methyl, 4-nitro, 4-carboxy, and 4-benzoyl derivatives), and 3,3-diaminobenzidine gave the corresponding 2-[2-(2,3-dihydrobenzimidazolylidene)]- and 2-[2-(2,3-dihydropyrido[2,3-d]imidazolylidene)]-5,5-dimethyl-1,3-cyclohexanediones. Their structure was confirmed by 1H NMR spectroscopic data and X-ray analysis.

How to Cite
Tonkikh, N.; Strakovs, A.; Petrova, M.; Chernyshev, V. V.; Schenk, H. Chem. Heterocycl. Compd. 2002, 38, 724. [Khim. Geterotsikl. Soedin. 2002, 822.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1019929622048

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Published

2002-06-25

Issue

No. 6 (2002)

Section

Original Papers