反应详情

(3,5-diamino-4-phenylazopyrazol-1-yl)phenylmethanone was prepared using 85 mg (0.5 mmol) of 2-(phenylhydrazono)malononitrile, which was derived from aniline (10 mL, 107 mmol) and malononitrile (161 mmol), and benzoic hydrazide (68 mg, 0.5 mmol). Solids had not formed after heating the reaction at 75° C. for 3 hrs, however, analysis of the reaction solution by TLC indicated that no starting material remained. The solution was allowed to cool to ambient temperature and the solvent was evaporated. The residue was dissolved in methanol and then precipitated by the addition of water. The resulting solid was isolated by filtration and dried to yield 20 mg (13%) of the compound as an orange coloured solid.

1. customSolids had not formed
2. temperatureafter heating
3. customthe reaction at 75° C. for 3 hrs
4. customthe solvent was evaporated
5. dissolutionThe residue was dissolved in methanol
6. customprecipitated by the addition of water
7. customThe resulting solid was isolated by filtration
8. customdried