反应详情

A solution of [4-difluoromethoxy-2-ethyl-8-fluoro-3-(4-pyrazol-1-ylbenzyl)quinolin-5-yloxy]acetic acid methyl ester (0.19 g) in tetrahydrofuran (5.0 mL) was treated with 1.0 M aqueous lithium hydroxide solution (0.78 ml), and the resulting solution was stirred at room temperature for 1 hour. The tetrahydrofuran was removed under reduced pressure and the residue acidified by the addition of 0.1M aqueous hydrochloric acid. The mixture was extracted with ethyl acetate and the combined extracts were washed with saturated aqueous sodium chloride solution, and than dried over magnesium sulfate. The solvent was removed under reduced pressure to afford title compound (0.18 g).

1. customThe tetrahydrofuran was removed under reduced pressure
2. additionthe residue acidified by the addition of 0.1M aqueous hydrochloric acid
3. extractionThe mixture was extracted with ethyl acetate
4. washthe combined extracts were washed with saturated aqueous sodium chloride solution
5. dry with materialthan dried over magnesium sulfate
6. customThe solvent was removed under reduced pressure