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Paper | Regular issue | Vol 48, No. 5, 1998, pp.961-973
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8132
An Approach to Pyrimidine N-Oxides: Carboxamide Oximes as Precursors

Biserka Mlakar, Bogdan Stefane, Marijan Kočevar, and Slovenko Polanc*

*Faculty of Chemistry and Chemical Technology, University of Ljubljana, Askerceva 5, P.O. Box 537, SLO-1000 Ljubljana, Slovenia


A method for the synthesis of pyrimidines N-oxides is described. Various carboxamide oximes were treated with the appropriate 1,3-dicarbonyl compounds or their equivalents in the presence of trifluoroacetic acid as a catalyst to give the corresponding pyrimidine N-oxides.