反应详情

Combine in a round bottom flask 1,2-bis-bromomethyl-4-methoxy-benzene (1.0 g, 3.40 mmol), benzyltriethylammonium chloride (73.5 mg, 3.2 mmol), 50% NaOH (aq)/toluene (3.0 mL/14 mL), and then drop wise add benzylamine (0.37 mL, 3.39 mmol). Stir the reaction at room temperature for 3 hours, add to ethyl acetate, wash with water, brine, and dry over Na2SO4. After concentrating under reduced pressure, add the mixture to a 10 g SCX column, wash with MeOH, and elute with 1.0 N NH3-MeOH. Flash chromatograph using 3:1 hexanes:ethyl acetate to afford 580.0 mg, 2.42 mmol (71% yield) of the title compound as a brown oil: 1H NMR (500 MHz, CDCl3); 3.7 (3H, s), 3.9-4.0 (6H, m), 6.7-6.8 (2H, m), 7.1 (1H, d), 7.3-7.5 (5H, m); MS m/z 238 (M−1).

1. customthe reaction at room temperature for 3 hours
2. washwash with water, brine
3. dry with materialdry over Na2SO4
4. concentrationAfter concentrating under reduced pressure
5. additionadd the mixture to a 10 g SCX column
6. washwash with MeOH
7. washelute with 1.0 N NH3-MeOH