反应详情

To a solution of (9H-fluoren-9-yl)methyl tert-butyl (4-methoxy-2-(2-methoxyethyl)butane-1,2-diyl)dicarbamate (G22, 269 mg) in methylene chloride (2 mL), trifluoroacetic acid (2 mL) was added at room temperature, and the mixture was stirred at the same temperature for 5 hours. The solvent was evaporated under reduced pressure, and then ethyl acetate and saturated aqueous sodium hydrogencarbonate were added to the residue. The organic layer was separated, washed with saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to obtain (9H-fluoren-9-yl)methyl (2-amino-4-methoxy-2-(2-methoxyethyl)butyl)carbamate (G23, 186 mg).

1. customThe solvent was evaporated under reduced pressure
2. additionethyl acetate and saturated aqueous sodium hydrogencarbonate were added to the residue
3. customThe organic layer was separated
4. washwashed with saturated aqueous sodium chloride
5. dry with materialdried over anhydrous sodium sulfate
6. customthe solvent was evaporated under reduced pressure