反应详情

To a solution of N-[4-(2-bromo-1-hydroxyethyl)phenyl]acetamide (0.40 g, in 10 mL of methanol) was introduced methylamine (10 mL, 2.0 M in methanol) at 0° C. The reaction mixture was warmed to room temperature after 30 minutes, and stirred at that temperature for 2 hours. The solvent and excess methylamine was evaporated. The residue was dissolved in methanol (5 mL) and stirred with resin (BioRad 50W×2, 0.5 g) overnight. The resin was collected by filtration, washed with methanol. The product on the resin was washed off with NH4OH/CH3OH (10% NH4OH aqueous solution (Aldrich, 29.4% NH3) in methanol, v/v). The solution was concentrated to give the title compound as a white solid (0.16 g).

1. customThe solvent and excess methylamine was evaporated
2. dissolutionThe residue was dissolved in methanol (5 mL)
3. stirringstirred with resin (BioRad 50W×2, 0.5 g) overnight
4. filtrationThe resin was collected by filtration
5. washwashed with methanol
6. washThe product on the resin was washed off with NH4OH/CH3OH (10% NH4OH aqueous solution (Aldrich, 29.4% NH3) in methanol, v/v)
7. concentrationThe solution was concentrated