Diisopropylethylamine → tert-butyl {2-[({5-[4-(2-fluoro-5-{[(2-fluoro-5-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrol-3-yl}carbonyl)amino]ethyl}carbamate

Participants

Reaction Steps

A mixture of 5-[4-(2-fluoro-5-{[(2-fluoro-5-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrole-3-carboxylic acid (Example 13) (300 mg, 0.67 mmol), HATU (281 mg, 0.74 mmol) and N,N-diisopropylethylamine (190 mg, 1.47 mmol) in anhydrous DMF (10 ml) was stirred at room temperature for 10 minutes, followed by addition of tert-butyl (2-aminoethyl)carbamate (160 mg, 1.0 mmol). The mixture was stirred for another 10 minutes and poured into 100 ml of water. The precipitates were filtered, washed with water and dried in vacuo to give tert-butyl {2-[({5-[4-(2-fluoro-5-{[(2-fluoro-5-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrol-3-yl}carbonyl)amino]ethyl}carbamate as white solid. Yield: 395 mg, 100%.

Provenance & Evidence