反应详情

温度

20 °C

To a mixture of tert-butyl 6-oxo-3,7-dihydro-2H-azepine-1-carboxylate (540.00 mg, 2.56 mmol, 1.00 Eq) in BnOH (2.76 g, 25.56 mmol, 10.00 Eq), was added t-BuOK (28.68 mg, 255.61 umol, 0.10 Eq) in one portion under N2. The mixture was stirred at 20° C. for 12 hours. LCMS showed the reaction was completed. The mixture was poured into water (100 mL) and stirred for 20 min. The aqueous phase was extracted with EA (40 mL*2). The combined organic phase was washed with saturated brine (20 mL*3), dried with anhydrous Na2SO4, filtered and concentrated in vacuum to afford tert-butyl 5-benzyloxy-3-oxo-azepane-1-carboxylate (1.50 g, crude) as yellow oil.

1. stirringstirred for 20 min
2. extractionThe aqueous phase was extracted with EA (40 mL*2)
3. washThe combined organic phase was washed with saturated brine (20 mL*3)
4. dry with materialdried with anhydrous Na2SO4
5. filtrationfiltered
6. concentrationconcentrated in vacuum