反应详情

To a solution of 1.00 g (4.97 mmol) of N-t-butoxycarbonyl-4-hydroxypiperidine and 0.83 ml (5.96 mmol) of triethylamine in 50 ml of methylene chloride was added 0.46 ml (5.96 mmol) of methanesulfonylchloride under ice-cooling and stirring and the mixture was stirred at room temperature for 30 minutes. The reaction mixture was washed with an aqueous saturated sodium bicarbonate solution and water and dried. The solvent was distilled off. The residue was washed with hexane to obtain 1.37 g of the desired compound (98.6%, colorless powder), mp: 87.0°-88.0° C.

1. temperaturecooling
2. stirringthe mixture was stirred at room temperature for 30 minutes
3. washThe reaction mixture was washed with an aqueous saturated sodium bicarbonate solution and water
4. customdried
5. distillationThe solvent was distilled off
6. washThe residue was washed with hexane