Toluene → 2-Benzyl-5-methoxy-2,3-dihydro-1H-isoindole

Participants

Reaction Steps

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 dropwise addition of Benzylamine (0.37 mL, 3.39 mmol). Stir the reaction at room temperature for 3 hours, and then add to Ethyl acetate, wash with water, brine, and dry over Na2SO4. After concentrating under reduced pressure, the add the mixture to a 10 g SCX column, wash with MeOH, and elute with 1N 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).

Provenance & Evidence