反应详情

To a 150 mL round bottomed flask containing 1.97 g (8.0 mmol) of 3-methoxy-4-nitro-benzyl bromide in 20 mL THF was added, 2.4 g (24 mmol, 3eq.) of triethylamine followed by 2.5 g (24 mmol, 3 eq.) of benzylamine. The mixture was stirred at room temperature for 2 h, and was then partitioned between 50 mL ethyl acetate and brine. The organic phase was dried over MgSO4 and concentrated. The residue was purified by flash chromatography, eluting with 1-4% MeOH in dichloromethane to give 1.6 g (73%) of the benzyl amine as a yellow oil. 1H NMR (400 MHz, CDCl3): δ7.84 (d, J=8.61 Hz, 1H), 7.34 (m, 5H), 7.16,(s, 1H), 6.99 (d,J=8.61 Hz, 1H), 3.97 (s, 3H), 3.86 (s, 2H), 3.81 (s, 2H).

1. additionwas added
2. customwas then partitioned between 50 mL ethyl acetate and brine
3. dry with materialThe organic phase was dried over MgSO4
4. concentrationconcentrated
5. customThe residue was purified by flash chromatography
6. washeluting with 1-4% MeOH in dichloromethane