Formation of derivatives of pyrazine 1,4-dioxide and 1-hydroxyimidazole in the condensation of 1,2-hydroxyamino oxime acetates with 1-phenyl- and 1-(2-hetaryl)-1,2-dicarbonyl compounds
Formation of derivatives of pyrazine 1,4-dioxide and 1-hydroxyimidazole in the condensation of 1,2-hydroxyamino oxime acetates with 1-phenyl- and 1-(2-hetaryl)-1,2-dicarbonyl compounds