反应详情

(2S)—N,N-Dimethyl-2-piperidinecarboxamide hydrochloride (880 mg, 4.567 mmol) was dissolved in a mixture of CH2Cl2 (15 mL) and water (15 mL), and then solid sodium bicarbonate (1.534 g, 18.268 mmol) was added, followed by benzoyl chloride (0.556 mL, 4.795 mmol). After stirring overnight, the phases were separated, and the aqueous phase was extracted with CH2Cl2 (3×50 mL). The combined organic phase was dried over anhydrous MgSO4, filtered, and concentrated in vacuo. This crude product was purified by flash chromatography (Combiflash, 0-10% methanol/dichloromethane) to provide (2S)—N,N-dimethyl-1-(phenylcarbonyl)-2-piperidinecarboxamide (883 mg, 74%). LCMS: (M+H)+: not detected.

1. customthe phases were separated
2. extractionthe aqueous phase was extracted with CH2Cl2 (3×50 mL)
3. dry with materialThe combined organic phase was dried over anhydrous MgSO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThis crude product was purified by flash chromatography (Combiflash, 0-10% methanol/dichloromethane)