反应详情

温度

0 °C

At 0° C., trifluoroacetic acid (5 ml) was added to a solution of N-((1R)-1-benzyl-2-((methylsulfonyl)amino)ethyl)-N-methylcarbamic acid tert-butylester (913 mg, 2.67 mmol) in dichloromethane (5 ml). The reaction mixture was stirred for 15 min at 0° C. The solvent was removed in vacuo without warming. The residue was dissolved in dichloromethane (50 ml) and the solvent was removed in vacuo. The latter procedure was repeated two times. The crude product was purified by flash chromatography on silica (20 g), using dichloromethane/methanol/25% aqueous ammonia as eluent, to give 658 mg of N-((2R)-2-methylamino-3-phenylpropyl)methansulfonamide.

1. customThe solvent was removed in vacuo
2. temperaturewithout warming
3. dissolutionThe residue was dissolved in dichloromethane (50 ml)
4. customthe solvent was removed in vacuo
5. customThe crude product was purified by flash chromatography on silica (20 g)