反应详情

A solution of 1-(5-methyl-[1,3,4]oxadiazol-2-yl)-piperidin-4-one (1.52 g, 8.39 mmol), O-benzylhydroxylamine hydrochloride (1.50 g, 9.23 mmol) and ammonium acetate (1.62 g, 21.0 mmol) in MeOH (34.5 mL) was heated to reflux for 2 hours under nitrogen. The solvent was removed under reduced pressure and the residue was purified by column chromatography on silica gel using a gradient from AcOEt to AcOEt/EtOH 9:1 (v/v) as eluent to yield the title compound as a light yellow viscous oil (2.32 g, 96%).

1. temperatureto reflux for 2 hours under nitrogen
2. customThe solvent was removed under reduced pressure
3. customthe residue was purified by column chromatography on silica gel using a gradient from AcOEt to AcOEt/EtOH 9:1 (v/v) as eluent