反应详情

To a solution of tert-butyl (3-((1,3-dioxoisoindolin-2-yl)methyl)pyridin-2-yl)methylcarbamate (30 g, 81 mmol) in MeOH (450 mL) at 0° C. was added hydrazine (25 mL, 810 mmol). The mixture was allowed to warm to room temperature and stirred overnight. The precipitate was filtered off, and the filtrate was concentrated to dryness. The residue was triturated with dichloromethane (500 mL) and filtered. Concentration of the filtrate afforded tert-butyl (3-(aminomethyl)pyridin-2-yl)methylcarbamate in quantitative yield (18.7 g). LRMS (M+H+) m/z 238.1.

1. filtrationThe precipitate was filtered off
2. concentrationthe filtrate was concentrated to dryness
3. customThe residue was triturated with dichloromethane (500 mL)
4. filtrationfiltered