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

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Reaction Steps

To a stirred solution of methyl 3-[({7-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]thieno[3,2-b]pyridin-2-yl}carbonyl)amino]propanoate (98 mg, 0.19 mmol) in a mixture of solvents THF/MeOH (10 ml/10 ml) was added 2 ml of 1M NaOH (2 mmol) solution. The mixture was stirred at room temperature for 1 hour and poured into 100 ml of water. 2M HCl was added until pH=4. The resulting precipitates were filtered, washed with water, and dried in vacuo to give 3-[({7-[4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]thieno[3,2-b]pyridin-2-yl}carbonyl)amino]propanoic acid as off-white solid. Yield: 90 mg, 95%.

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