反应详情

温度

72 °C

To a stirred solution of methyl 5-{4-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2-yl}-1H-pyrrole-3-carboxylate (1.38 g, 3.00 mmol) in a mixture of solvents THF/MeOH (20 ml/20 ml) was added 2 ml of 5M NaOH (10 mmol) solution. The mixture was heated in a 72° C. bath for 5 hours, cooled to room temperature and poured into 200 ml of water. 2M HCl was added until pH=3. The resulting precipitates were filtered, washed with water, and dried in vacuo to give 5-{4-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2-yl}-1H-pyrrole-3-carboxylic acid as light brown solid. Yield: 1.28 g, 96%.

1. temperaturecooled to room temperature
2. customThe resulting precipitates
3. filtrationwere filtered
4. washwashed with water
5. customdried in vacuo