反应详情

To a stirred suspension of 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 (360 mg, 0.61 mmol) in 5 ml of methylene chloride was added 3 ml of trifluoroacetic acid. The mixture was stirred at room temperature for 20 minutes and evaporated to dryness under reduced pressure. The residue was re-dissolved in MeOH (5 ml) and poured into 100 ml of water with vigorous stirring. Saturated NaHCO3 solution was added until pH=8-9. The precipitates were filtered, washed with water and dried in vacuo to give N-(2-aminoethyl)-5-[4-(2-fluoro-5-{[(2-fluoro-5-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrole-3-carboxamide as beige solid. Yield: 280 mg, 94%.

1. customevaporated to dryness under reduced pressure
2. dissolutionThe residue was re-dissolved in MeOH (5 ml)
3. additionpoured into 100 ml of water with vigorous stirring
4. additionSaturated NaHCO3 solution was added until pH=8-9
5. filtrationThe precipitates were filtered
6. washwashed with water
7. customdried in vacuo