反应详情

温度

60 °C

A solution of 2-(N-tert-butoxycarbonyl-N-isopropylamino)-ethanol (3.00 g, 14.8 mmol) and benzyl bromide (2.6 ml, 22.1 mmol) in anhydrous tetrahydrofuran (30 ml) was added to a solution of 60% sodium hydride (885 mg, 22.1 mmol) in anhydrous tetrahydrofuran (20 ml) under ice-cooling, and the mixture was stirred at 60° C. for four hours. Water (100 ml) was added to the reaction mixture under ice-cooling, the temperature was returned to room temperature, and the whole was extracted with ethyl acetate (100 ml). The organic layer was washed with saturated brine (100 ml) and dehydrated with anhydrous magnesium sulfate. Ethyl acetate was evaporated under reduced pressure, and the obtained oily matter was purified by silica gel column chromatography (mobile phase:hexane/ethyl acetate=4/1) to give 1.30 g (30%) of the target compound.

1. temperaturecooling
2. temperaturecooling
3. customwas returned to room temperature
4. extractionthe whole was extracted with ethyl acetate (100 ml)
5. washThe organic layer was washed with saturated brine (100 ml)
6. customEthyl acetate was evaporated under reduced pressure
7. customthe obtained oily matter was purified by silica gel column chromatography (mobile phase:hexane/ethyl acetate=4/1)