反应详情

温度

90 °C

To a 25 mL round bottom flask was added methyl 6-(2-(4-fluorophenyl)-2-methylpropylamino)pyridazine-3-carboxylate (100 mg, 0.3 mmol, 1.0 equiv), hydrazine hydrate (1 mL), and ethanol (5 mL)). The reaction was refluxed for 2 h and concentrated. N,N′-Carbonyldiimidazole (100 mg, 0.6 mmol, 2.0 equiv) and DMF (1 mL) were then added to the crude product and the reaction was heated to 90° C. for 1.5 h. The reaction mixture was directly purified by reverse phase column chromatography to afford 72 mg (67%) of 5-(6-(2-(4-fluorophenyl)-2-methylpropylamino)pyridazin-3-yl)-1,3,4-oxadiazol-2(3H)-one as a white solid, m/z=330.0 [M+H].

1. temperatureThe reaction was refluxed for 2 h
2. concentrationconcentrated
3. customThe reaction mixture was directly purified by reverse phase column chromatography