反应详情

To a stirred solution of ethyl 2-(3-fluoro-4-(methylsulfonamidomethyl)phenyl)-propanoate (458 mg, 1.51 mmol) in co-solvent with tetrahydrofuran and water (1:1) were added lithium hydroxide (190 mg, 4.529 mmol). The reaction mixture was refluxed for 15 h, then cooled to room temperature, acidified to pH 3-4 with acetic acid. The residue dissolved in ethyl acetate and washed with water and brine. The organic layer was dried over magnesium sulfate and filtered. The filtrate was removed in vacuo. The crude was purified by column chromatography to give 2-(3-fluoro-4-(methylsulfonamidomethyl)phenyl)propanoic acid (218 mg, 52%).

1. temperatureThe reaction mixture was refluxed for 15 h
2. washwashed with water and brine
3. dry with materialThe organic layer was dried over magnesium sulfate
4. filtrationfiltered
5. customThe filtrate was removed in vacuo
6. customThe crude was purified by column chromatography