Hydrochloric Acid → HCID 67042520, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of methyl 4-{4-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2-yl}thiophene-2-carboxylate (550 mg, 1.15 mmol) in a mixture of solvents—THF/MeOH (20 ml/20 ml) was added 1 ml of 5M NaOH (5 mmol) solution. The mixture was heated in a 66° C. bath for 2 hours, cooled to room temperature and poured into 200 ml of water. 2M HCl was added until pH=5. The resulting precipitates were filtered, washed with water, and dried in vacuo to give 4-{4-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2-yl}thiophene-2-carboxylic acid as off-white solid. Yield: 520 mg, 97%.

Provenance & Evidence