反应详情

Methyl 4-oxo-3-piperidinecarboxylate hydrochloride (10 g, 51.65 mmol) was dissolved in dichloromethane (130 mL). Triethylamine (7.20 mL, 51.65 mmol) was added followed by acetic anhydride (4.87 mL, 51.65 mmol). The reaction mixture was stirred at room temperature for 2 h. The organic phase was washed with water, dried over MgSO4, filtered and concentrated to give methyl 1-acetyl-4-oxopiperidine-3-carboxylate (6.10 g, 59.3%), which was used in the next step as such.

1. washThe organic phase was washed with water
2. dry with materialdried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated