Interaction of pentafluorobenzoylpyruvic acid and its esters with N-nucleophiles. Synthesis of 4-oxoquinoline-2-carboxylic acids
作者:V.I. Saloutin、Z.E. Skryabina、I.T. Basyl'、P.N. Kondrat'ev、O.N. Chupakhin
DOI:10.1016/0022-1139(94)03069-3
日期:1994.10
Nitrogen-substituted 4-oxoquinoline-2-carboxylic acids have been prepared by the reaction of pentafluorobenzoylpyruvic acid with isopropyl-, cyclohexyl-, phenyl- and ethanol-amine. Ammonia and triethylamine, however, were found to react with pentafluorobenzoylpyruvic acid to form only the 2-carboxy-5,6,7-8-tetrafluorochromone; such behaviour has been found in the reactions of ethyl pentafluorobenzoylpyruvate
氮取代的4-氧代喹啉-2-羧酸是通过五氟苯甲酰基丙酮酸与异丙基,环己基,苯基和乙醇胺反应制得的。然而,发现氨和三乙胺与五氟苯甲酰基丙酮酸反应,仅形成2-羧基-5,6,7-8-四氟色酮。在五氟苯甲酰基丙酮酸乙酯与氨和环己胺的反应中发现了这种行为。