反应详情

温度

90 °C

Diethyl (4-amino-3-fluorophenyl)propanedioate (11.85 g, 44.1 mmol) was dissolved in ethanol (80 ml) and treated with NaOH (2.6 g, 1.5 eq) dissolved in 18 ml of water to give a pink solution. This was heated to 90° C. for 1 hour until complete. Heating continued for 1 further hour, and then cooled to room temperature. Solvent evaporated and acidified with 2N HCl. Extracted with ethyl acetate (3×100 ml). Organics washed with brine and dried over MgSO4. Evaporated to give the title compound as a yellow oil which crystallised slowly on standing (6.6 g).

1. customto give a pink solution
2. temperatureHeating
3. temperaturecooled to room temperature
4. customSolvent evaporated
5. extractionExtracted with ethyl acetate (3×100 ml)
6. washOrganics washed with brine
7. dry with materialdried over MgSO4
8. customEvaporated