反应详情

温度

0 °C

3-Hydroxy-(R)-pyrrolidine (8.71 g, 0.1 mol) was dissolved in CH2Cl2 (260 mL) and cooled to 0° C. Triethylamine (33.5 mL, 0.24 mol) and benzyl chloroformate (14.9 mL, 0.11 mol) were added, and the resulting solution was stirred for 2 h at 0° C. The solution was gradually warmed to room temperature and allowed to stir overnight. The solution was washed with 1 M HCl, saturated NaHCO3, and brine. The organic solution was dried over MgSO4 and concentrated. The crude product was purified by column chromatography eluting with ethyl acetate to afford 13.7 g (62% yield, 2 steps) of the desired product as a purple oil.

1. temperatureThe solution was gradually warmed to room temperature
2. stirringto stir overnight
3. washThe solution was washed with 1 M HCl, saturated NaHCO3, and brine
4. dry with materialThe organic solution was dried over MgSO4
5. concentrationconcentrated
6. customThe crude product was purified by column chromatography
7. washeluting with ethyl acetate