反应详情

To a solution of tert-butyl 7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylate (500 g, 2.5 mol) in H2O (5 L) was added BnNH2 (294 g, 2.75 mol) at room temperature. The mixture was heated to reflux overnight. The mixture was extracted with DCM (1 L), dried over sodium sulfate, and concentrated under reduced pressure to give tert-butyl-4-(benzylamino)-3-hydroxypiperidine-1-carboxylate and tert-butyl-3-(benzylamino)-4-hydroxypiperidine-1-carboxylate, which were used in the next step without further purification.

1. temperatureThe mixture was heated
2. temperatureto reflux overnight
3. extractionThe mixture was extracted with DCM (1 L)
4. dry with materialdried over sodium sulfate
5. concentrationconcentrated under reduced pressure