反应详情

N-t-Boc-L-homoserine (5.14 g, 23.45 mmol) and potassium bicarbonate (2.46 g, 24.6 mmol) was weighed out in a round bottom flask and to it was added anhydrous N,N-dimethylformamide (100 mL) and benzyl bromide (4.2 g, 24.6 mmol). The mixture was stirred at room temperature for 18 hours. The crude mixture was then diluted with ethyl acetate and washed, respectively, with brine, saturated NaHCO3 and brine, and dried over Na2SO4. The organic layer was then concentrated down on rotovap and purified on normal phase column chromatography. Yield=7.27 g (100%).

1. washwashed
2. dry with materialrespectively, with brine, saturated NaHCO3 and brine, and dried over Na2SO4
3. concentrationThe organic layer was then concentrated down on rotovap
4. custompurified on normal phase column chromatography