反应详情

温度

0 °C

Methyl 3-[(4-{[(tert-butoxycarbonyl)(methyl)amino]methyl}-2-phenyl-1H-pyrrol-1-yl)sulfonyl]benzoate (710 mg) was dissolved in tetrahydrofuran (5 mL) and methanol (3 mL), and 1 mol/L aqueous sodium hydroxide solution (3 mL) was added at 0° C. The mixture was stirred at 0° C. for 1 hr, and at room temperature for 2 hr, cooled again to 0° C., acidified with 1 mol/L hydrochloric acid, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, dried over anhydrous magnesium sulfate and the solvent was evaporated under reduced pressure. The residual crystals were washed with a mixed solvent of isopropyl ether and hexane to give the title compound as colorless crystals (yield 577 mg, 83%).

1. waitat room temperature for 2 hr
2. temperaturecooled again to 0° C.
3. extractionthe mixture was extracted with ethyl acetate
4. washThe extract was washed with water and saturated brine
5. dry with materialdried over anhydrous magnesium sulfate
6. customthe solvent was evaporated under reduced pressure
7. washThe residual crystals were washed with a mixed solvent of isopropyl ether and hexane