反应详情

Combine 3-phenyl-3-(2-hydroxyethyl)pyrrolidine (101 g, 530 mmol) and ethanol (1.92 L). Heat to reflux. Add a refluxing solution of (R,R)-di-p-anisoyltartaric acid (107 g, 410 mmol) in ethanol (3.9 L). Continue to reflux. After 10 minutes, slowly cool to ambient temperature and add seed crystals. After 18 hours, collect the solid that forms by filtration, rinse with ethanol (200 mL). recrystallize twice from ethanol to give (−)-3-phenyl-3-(2-hydroxyethyl)pyrrolidine (R,R)-di-p-anisoyltartaric acid salt: mp; 179-180° C. [α]2D0=−108.8 (c=1.02, methanol).

1. temperatureHeat to reflux
2. temperatureContinue to reflux
3. additionadd seed crystals
4. waitAfter 18 hours
5. customcollect the solid that forms
6. filtrationby filtration
7. washrinse with ethanol (200 mL)
8. customrecrystallize twice from ethanol