反应详情

3-Benzyloxy-5-bromo-1-isopropyl-4-(4-methoxybenzoyl)-1H-pyrazole (43 mg), phenol (14 mg) and potassium carbonate (21 mg) were suspended in N,N-dimethylacetoamide (5 mL) and the mixture was stirred under reflux for 2 hours. The mixture was allowed to cool to room temperature, then 10% citric acid aqueous solution was added to the reaction mixture and the mixture was extracted with ethyl acetate. The organic layer was sequentially washed with a saturated sodium hydrogen carbonate and brine. After the solution was dried over anhydrous magnesium sulfate, the solvent was removed under reduced pressure. The obtained residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=5/1) to give the title compound, (24 mg).

1. temperatureunder reflux for 2 hours
2. extractionthe mixture was extracted with ethyl acetate
3. washThe organic layer was sequentially washed with a saturated sodium hydrogen carbonate and brine
4. dry with materialAfter the solution was dried over anhydrous magnesium sulfate
5. customthe solvent was removed under reduced pressure
6. customThe obtained residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=5/1)