title: Hydrazine and quinoxaline derivatives of aryl L-ascorbic acid analogs.
abstract: The synthesis of a series of 4-aryl-2-hydroxytetronimides (1) and their oxidation products (2) with nitrous acid is described. The aryl-2,3-dioxobutyrolactones (2) with acyl- or arylhydrazines gave the corresponding bisacyl- (3) or bisarylhydrazones (4). Furthermore, the lactones 2 with o-phenylenediamine gave, either quinoxaline derivatives (5) or Schiff bases (6) depending upon the reactant ratio.
mesh_terms: D001205:Ascorbic Acid / Q000031:analogs & derivatives*; D055598:Chemical Phenomena; D002621:Chemistry; D006834:Hydrazines / Q000138:chemical synthesis; D010084:Oxidation-Reduction; D011810:Quinoxalines / Q000138:chemical synthesis
chemical_list: D006834:Hydrazines; D011810:Quinoxalines; D001205:Ascorbic Acid