Acetic Anhydride → HCID 22132733, compound

Participants

Reaction Steps

N-(4-Hydroxyphenyl)-N'-{4-[(6,7-dimethoxy-4-quinolyl)oxy]phenyl}urea (47 mg) was dissolved in methylene chloride (6 ml), after the addition of triethylamine (2 ml), acetic anhydride (0.5 ml) was added, and the admixture was stirred at room temperature for 15 hours. After the addition of aqueous sodium hydrogen carbonate, the reaction mixture was extracted 2 times with ethyl acetate, and the organic layer was then washed with brine and dried with anhydrous sodium sulfate. The solvent was removed by reduced-pressure distillation, and the resulting residue was purified by column chromatography on silica gel eluting with chloroform/acetone (10/1) to obtain 35 mg of the title compound (yield: 68%).

Provenance & Evidence