反应详情

Methyl 4-{(1S)-1-[(tert-butoxycarbonyl)amino]ethyl}benzoate (step 4, 12.83 g, 45.9 mmol) was treated with trifluoroacetic acid (100 mL) and dichloromethane (100 mL) at room temperature for 16 hours. After removal of the solvent, the residue was diluted with 10% hydrogen chloride solution in methanol (100 mL). The mixture was concentrated under reduced pressure and the residue was washed with ethylacetate to give 9.40 g (95%) of the title compound as white solids:

1. customAfter removal of the solvent
2. additionthe residue was diluted with 10% hydrogen chloride solution in methanol (100 mL)
3. concentrationThe mixture was concentrated under reduced pressure
4. washthe residue was washed with ethylacetate