HCID 90052135, compound → HCID 90052139, compound

Participants

Reaction Steps

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).

Provenance & Evidence