反应详情

A solution of (S)-benzyl 4-(3-(tert-butoxycarbonylamino)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (7 g, 17 mmol) in 50% TFA/CH2Cl2 (50 mL) was stirred at ambient temperature for 1 hour. The mixture was concentrated in vacuo. The residue was dissolved in EtOAc (200 mL) and washed with saturated sodium carbonate (200 mL) and brine. The combined organic layers were dried over MgSO4, filtered and concentrated in vacuo to yield (S)-benzyl 4-(3-amino-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (3.4 g, 11 mmol, 64%).

1. concentrationThe mixture was concentrated in vacuo
2. dissolutionThe residue was dissolved in EtOAc (200 mL)
3. washwashed with saturated sodium carbonate (200 mL) and brine
4. dry with materialThe combined organic layers were dried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo