DERIVATIVES OF CONDENSED THIENO[2,3-<i>d</i>]PYRIMIDINES. 15. SYNTHESIS OF 2-SUBSTITUTED 3-AMINO-6,6-DIMETHYL-5,6-DIHYDRO-8H-PYRANO[4',3':4,5]THIENO[2,3-<i>d</i>]PYRIMIDIN-4-ONES

Authors

  • А. П. Мкртчян A. L. Mndzhoyan Institute of Fine Organic Chemistry, Armenian National Academy of Sciences, Erevan 375014
  • А. C. Норавян A. L. Mndzhoyan Institute of Fine Organic Chemistry, Armenian National Academy of Sciences, Erevan 375014
  • B. М. Петросян A. L. Mndzhoyan Institute of Fine Organic Chemistry, Armenian National Academy of Sciences, Erevan 375014

Keywords:

pyranone, pyranothienopyrimidine, pyranothiophene, thienopyrimidine, thiophene

Abstract

A method has been developed for the preparation of 2-R-substituted 3-amino-6,6-dimethyl-5,6-dihydro-8H-pyrano[4',3':4,5]thieno[2,3-d]pyrimidin-4-ones based on 2-R-amino-3-ethoxycarbonylpyrano-[2,3-c]thiophenes. It has been established that their cyclization with hydrazine hydrate requires vigorous conditions.

How to Cite
Mkrtchyan, A. P.; Noravyan, A. S.; Petrosyan, V. M. Chem. Heterocycl. Compd. 2002, 38, 238. [Khim. Geterotsikl. Soedin. 2002, 261.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1015355729220

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Published

2002-02-25

Issue

No. 2 (2002)

Section

Original Papers