Synthesis of new condensed thieno[2,3-<i>b</i>]pyridines containing pyrimidine and imidazole rings

Authors

  • В. В. Дабaева A. D. Mndzhoyan Institute of Fine Organic Chemistry, Academy of Sciences of the Republic of Armenia, 375014 Yerevan
  • А. С. Норавян A. D. Mndzhoyan Institute of Fine Organic Chemistry, Academy of Sciences of the Republic of Armenia, 375014 Yerevan
  • B. H. Мадакян A. D. Mndzhoyan Institute of Fine Organic Chemistry, Academy of Sciences of the Republic of Armenia, 375014 Yerevan
  • Б. Д. Енокян A. D. Mndzhoyan Institute of Fine Organic Chemistry, Academy of Sciences of the Republic of Armenia, 375014 Yerevan

Abstract

Two different convenient methods have been developed for the synthesis of condensed thieno[2,3-b]pyridines. The intramolecular cyclization of 3-amino-2-hydrazinocarbonyl-7,7-dimethyl-7,8-dihydo-5H-pyrano[3,4-e]thieno[2,3-b]pyridine was carried out to give 7,7-dimethyl-2-oxo-1,2,6,7-tetrahydro-9H-pyrano[3′,4′-e]imidazo[4″,5″∶2,3]thieno[5,4-b]pyridine, which is the first representative of a new heterocyclic system.

How to Cite
Dabaeva, V. V.; Noravyan, A. S.; Madakyan, V. N.; Enokyan, B. D. Chem. Heterocycl. Compd. 1997, 33, 741. [Khim. Geterotsikl. Soedin. 1997, 847.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF02291811

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Published

1997-06-25

Issue

No. 6 (1997)

Section

Original Papers