反应详情

To a solution of methyl 2-(tert-butoxycarbonylamino)acrylate (16.5 g, 82.0 mmol) and N-(Methoxymethyl)-N-(trimethylsilylmethyl)benzylamine (19.5 g, 82.0 mmol) in DCM (400 mL) was added dropwise TFA (0.32 mL) at 0° C. under nitrogen. The reaction mixture was allowed to warm to ambient temperature and stirred overnight. The reaction mixture was diluted with DCM, washed with saturated aqueous NaHCO3 and brine, dried and concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (3% MeOH in DCM) to give methyl 1-benzyl-3-(tert-butoxycarbonylamino)pyrrolidine-3-carboxylate (21.7 g, 79%).

1. washwashed with saturated aqueous NaHCO3 and brine
2. customdried
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified by flash chromatography on silica gel (3% MeOH in DCM)