Hydrochloric Acid → methyl 5-(4-{3-[(3-methyl-2-furoyl)amino]phenoxy}pyridin-2-yl)-1H-pyrrole-3-carboxylate

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Reaction Steps

A mixture of 3-methyl-2-furoic acid (490 mg, 3.88 mmol), HATU (1.71 g, 4.5 mmol) and N,N-diisopropylethylamine (1.0 g, 7.8 mmol) in anhydrous DMF (10 ml) was stirred at room temperature for 10 minutes, followed by addition of methyl 5-[4-(3-aminophenoxy)pyridin-2-yl]-1H-pyrrole-3-carboxylate (1.0 g, 3.24 mmol). The mixture was stirred at 50° C. for 2 hours and poured into 100 ml of water. 2M HCl was added dropwise until pH=4˜5. The precipitates were filtered, washed with water and dried in vacuo to give methyl 5-(4-{3-[(3-methyl-2-furoyl)amino]phenoxy}pyridin-2-yl)-1H-pyrrole-3-carboxylate as white solid.

Provenance & Evidence