反应详情

Place 1-cyclohexyl-pyrrolidin-2-one (400 mg, 2.4 mmol) in THF (30 mL) and cool to −78° C. Slowly add LDA (2.0 M, 2.4 mL, 4.8 mmol) and stir for 15 minutes. Add benzyl bromide (1.23 g, 7.2 mmol) and stir for 3 hours. Quench with ammonium chloride and extract with dichloromethane. Dry over sodium sulfate, filter, and concentrate. Purify by silica gel (20-50% ethyl acetate in hexanes) to afford 432 mg (70%) of the title compound. Mass spectrum (apci) m/z=258.2 (M+H).

1. customQuench with ammonium chloride
2. extractionextract with dichloromethane
3. dry with materialDry over sodium sulfate
4. filtrationfilter
5. concentrationconcentrate
6. customPurify by silica gel (20-50% ethyl acetate in hexanes)