EXOTIC AMINO ACIDS. 6. SYNTHESIS OF SUBSTITUTED 4-OXO-4H-PYRIDO[1,2-<i>a</i>]PYRIMIDINES

Authors

  • И. Равиня Riga Technical University, Riga LV-1048
  • Д. Зицане Riga Technical University, Riga LV-1048
  • М. Петрова Riga Technical University, Riga LV-1048
  • Э. Гудриниеце Riga Technical University, Riga LV-1048
  • У. Калей BAPEKS Ltd., Riga LV-1048

Keywords:

2-aminopyridines, 4-oxo-4H-pyrido[1,2-a]pyrimidines, 2-pyridylaminomethyleneisopropylidenemalonates, ethoxymethyleneisopropylidenemalonate

Abstract

2-Pyridylaminomethyleneisopropylidenemalonates, prepared from ethoxymethyleneisopropylidenemalonate and 2-aminopyridines, form 4-oxo-4H-pyrido[1,2-a]pyrimidines at their melting points and are separated from the reaction mixture by sublimation.

How to Cite
Ravina, I.; Zicane, D.; Petrova, M.; Gudriniece, E.; Kalejs, U. Chem. Heterocycl. Compd. 2002, 38, 836. [Khim. Geterotsikl. Soedin. 2002, 945.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1020689805869

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Published

2002-07-25

Issue

No. 7 (2002)

Section

Original Papers