反应详情

To diethyl[(tert-butoxycarbonyl)amino]propanedioate (5.56 mL, 21.79 mmol) in ethanol (30 ml) was added sodium ethoxide (9.76 ml, 26.2 mmol) followed by benzyl bromide (2.59 mL, 21.79 mmol). The mixture was stirred for 6 h, and the solvent was removed in vacuo. Saturated aqueous sodium hydrogen carbonate (50 mL) was added and the mixture was extracted with ethyl acetate (3×50 mL). The combined organic fractions were washed with saturated aqueous brine (1×50 mL), dried with anhydrous sodium sulfate, filtered and the solvent removed in vacuo to afford the title compound as a colorless amorphous solid. LC/MS 366.1 (M+1).

1. customthe solvent was removed in vacuo
2. additionSaturated aqueous sodium hydrogen carbonate (50 mL) was added
3. extractionthe mixture was extracted with ethyl acetate (3×50 mL)
4. washThe combined organic fractions were washed with saturated aqueous brine (1×50 mL)
5. dry with materialdried with anhydrous sodium sulfate
6. filtrationfiltered
7. customthe solvent removed in vacuo