Hydrochloric Acid → methyl 3-[({5-[4-(2-fluoro-5-{[(3-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrol-3-yl}carbonyl)amino]propanoate

Participants

Reaction Steps

To a stirred solution of 5-[4-(2-fluoro-5-{[(3-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrole-3-carboxylic acid (Example 275) (100 mg, 0.23 mmol) in 10 ml of anhydrous DMF were added HATU (100 mg, 0.26 mmol) and N,N-diisopropylethylamine (85 mg, 0.66 mmol). The mixture was stirred at room temperature for 10 minutes, followed by addition of β-alanine methyl ester hydrochloride (46 mg, 0.33 mmol). The mixture was stirred for another minutes and poured into 100 ml of water. 2M HCl was added dropwise with vigorous stirring until pH=4. The precipitates were filtered, washed with water and dried in vacuo to give methyl 3-[({5-[4-(2-fluoro-5-{[(3-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrol-3-yl}carbonyl)amino]propanoate as white solid. Yield: 110 mg, 92%.

Provenance & Evidence