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

Article abstract of DOI:10.1007/BF00505767

The condensation of acetates of 2-hydroxyaminocyclohexanone and 2-hydroxyaminopentanone oximes with 1-phenyl and 1-(2-hetaryl) 1,2-diketones leads to pyrazine 1,4-dioxide derivatives, whereas the condensation of 2-hydroxyaminocyclohexanone oxime acetate with 1-phenyl- and 1-(2-hetaryl)glyoxals gives a mixtures of pyrazine 1,4-dioxide and 1-hydroxyimidazole derivatives.