反应详情

To a solution of ethyl 2-[2-bromo-4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]phenoxy]acetate (327 mg) in ethanol (3.3 ml) was added 1N aqueous sodium hydroxide solution (1.45 ml), and the mixture was stirred for 15 hours at room temperature. 1N Hydrochloric acid (1.45 ml) was added to the stirred reaction mixture under ice-cooling, and the solvent was removed under reduced pressure. To the residue was added water, and the resulting insoluble material was collected by filtration to give 2-[2-bromo-4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]phenoxy]acetic acid (88 mg).

1. temperaturecooling
2. customthe solvent was removed under reduced pressure
3. additionTo the residue was added water
4. filtrationthe resulting insoluble material was collected by filtration