反应详情

To a solution of tert-butyl (6R,7S)-6-amino-7-(3,4-dichlorophenyl)-1,4-oxazepane-4-carboxylate (1.3 g) in THF (13 ml) were added triethylamine (0.752 ml) and acetyl chloride (0.385 mL) at 0° C., and the mixture was gradually warmed from 0° C. to room temperature, and stirred overnight. The reaction mixture was diluted with ethyl acetate. The diluted solution was washed with distilled water and brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel chromatography (hexane/ethyl acetate) to give the title compound (0.965 g).

1. temperaturethe mixture was gradually warmed from 0° C. to room temperature
2. washThe diluted solution was washed with distilled water and brine
3. dry with materialdried over anhydrous magnesium sulfate
4. customThe solvent was evaporated under reduced pressure
5. customthe residue was purified by silica gel chromatography (hexane/ethyl acetate)