CONDENSED THIENOPYRIMIDINES. 14. SYNTHESIS OF 10H-THIOPYRANO[4'',3'': 4',5']THIENO[2',3': 4,5]PYRIMIDO[2,3-<i>c</i>]-1,2,4-TRIAZINES

Authors

  • А. Ш. Оганисян A. L. Mndzhoyan Institute of Fine Organic Chemistry, Armenian Republic National Academy of Sciences, Yerevan 375014
  • Г. О. Григорян A. L. Mndzhoyan Institute of Fine Organic Chemistry, Armenian Republic National Academy of Sciences, Yerevan 375014
  • А. С. Норавян A. L. Mndzhoyan Institute of Fine Organic Chemistry, Armenian Republic National Academy of Sciences, Yerevan 375014

Keywords:

10H-thiopyrano[4'',3'': 4',5']thieno[2',3': 4,5]pyrimido[2,3-c]-1,2,4-triazines

Abstract

Reaction of a substituted 2-aminothienothiopyran with methyl(phenyl) isothiocyanate, intramolecular cyclization of the obtained N'-methyl(phenyl) thioureido derivatives, and work up of the cyclization products with hydrazine hydrate gave 2-hydrazinodihydrothiopyranothienopyrimidines. Treatment of the latter with pyruvic acid gave the novel 10H-thiopyrano[4'',3'':4',5']thieno[2',3':4,5]pyrimido-[2,3‑c]-1,2,4-triazines.

How to Cite
Oganisyan, A. Sh.; Grigoryan, G. O.; Noravyan, A. S. Chem. Heterocycl. Compd. 2001, 37, 1025. [Khim. Geterotsikl. Soedin. 2001, 1116.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1012752004506

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Published

2001-08-25

Issue

No. 8 (2001)

Section

Original Papers