Hydrochloric Acid → 7-[4-({[(2-Fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]thieno[3,2-b]pyridine-2-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

To a stirred suspension of methyl 7-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)-phenoxy]thieno[3,2-b]pyridine-2-carboxylate (50 mg, 0.11 mmol) in MeOH (3 ml), was added 0.4M LiOH/MeOH solution (10 ml, 4.0 mmol). The mixture was heated at 50° C. for 7 hours, and poured into 100 ml of water. 1M HCl was added until pH=4. The resulting precipitates were filtered, washed with water and dried in vacuo to give 7-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]thieno[3,2-b]pyridine-2-carboxylic acid as light grey solid. Yield: 40 mg, 83%.

Provenance & Evidence