POSITIONAL ISOMERS OF THIENOPYRIMIDINONES

Authors

  • Т. Т. Кучеренко Taras Shevchenko Kiev National University, Kiev 01033
  • А. В. Задорожний Taras Shevchenko Kiev National University, Kiev 01033
  • В. А. Ковтуненко Taras Shevchenko Kiev National University, Kiev 01033

DOI:

https://doi.org/10.1007/7104

Keywords:

4-oxopyrimidinones, thienopyrimidinones, thiophenes

Abstract

Condensation of o-cyanomethylbenzoic acids with  esters of 2-aminothiophene-3-carboxylic and 3-amino-thiophene-2-carboxylic acids to give isomeric 2-(4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-ylmethyl)-benzoic acids and their ethyl and phenacyl esters. Methylation of esters occurs at N-3. The spectroscopic characteristics of the positional isomers are compared at the level of carboxylic acids, their esters, and methylated products.

How to Cite
Kucherenko, T. T.; Zadorozhny, A. V.; Kovtunenko, V. A.  Chem. Heterocycl. Compd. 2008, 44, 750. [Khim. Geterotsikl. Soedin. 2008, 932.]

For this article in the English edition see DOI 10.1007/s10593-008-0100-y


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Published

2022-10-05

Issue

No. 6 (2008)

Section

Original Papers