Water → HCID 13677845, compound

Participants

Reaction Conditions

Reaction Steps

Ethyl 4-bromo-3-hydroxypiperidine-1-carboxylate (Preparation: Izamanishi, T. et al; 1982, Chem. Pharm. Bull., 30: 3617-3623) (5.1 g) was dissolved in anhydrous DMF (20 mL) under an argon atmosphere, followed by the addition of 18-crown-6 (0.27 g) and sodium azide (2.89 g). The reaction was heated at 90° C. for twenty-three hours, then stirred overnight, slowly cooling to room temperature. The reaction was then added to deionised water (150 mL) to quench it, saturated with solid sodium chloride, and extracted with EtOAc (2×200 mL). The combined EtOAc layers were washed with brine (100 mL), dried over anhydrous MgSO4 and concentrated in vacuo, yielding the title compound (4.3 g, 100%). MS (GC-EI)[(M-N2)+]: 186 for C8H14BrN4O3.

Provenance & Evidence