Croatica Chemica Acta, Vol. 44 No. 2, 1972.
Original scientific paper
Synthesis of Isomeric 3-Aminopyridopyrimidin-4(3H)ones
B. Stanovnik
; Department of Chemistry, University of Ljubljana, 61000 Ljubljana, Slovenia, Yugoslavia
M. Tišler
; Department of Chemistry, University of Ljubljana, 61000 Ljubljana, Slovenia, Yugoslavia
Abstract
It could be established that the reaction between hydrazine
and enamines, formed from ethyl 2(or 3)-aminopyridine-3(or 2)carboxylates and diethyl ethoxymethylenemalonate or ethyl ethoxymethylenecyanoacetate, afforded 3-aminopyrido(2,3-d)pyrimidin-
4(3H)one or 3-aminopyrido(3,2-d)pyrimidin-4(3H)one, respectively.
Similarly, these aminopyridinecarboxylates condense with N,N-
dimethylformamide dimethylacetal and react further with
hydrazine to give the same bicyclic compounds.
Keywords
Hrčak ID:
197270
URI
Publication date:
15.7.1972.
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