反应详情

温度

10 °C

To a solution of methyl-(4-nitro-phenyl)-amine (15.2 g, 0.1 mol) in AcOH (150 mL) and CHCl3 (50 mL) was added Br2 (16.0 g, 0.1 mol) dropwise at 5° C. The mixture was stirred at 10° C. for 1 h and then basified with sat. aq. NaHCO3. The resulting mixture was extracted with EtOAc (100 mL×3), and the combined organics were dried over anhydrous Na2SO4 and evaporated under vacuum to give (2-bromo-4-nitro-phenyl)-methyl-amine (2-bromo-4-nitro-phenyl)-methyl-amine (23.0 g, 99%), which was used in the next step without further purification. 1H NMR (300 MHz, CDCl3) δ 8.37 (d, J=2.4 Hz, 1H), 8.13 (dd, J=2.4, 9.0 Hz, 1H), 6.58 (d, J=9.0 Hz, 1H), 5.17 (brs, 1H), 3.01 (d, J=5.4 Hz, 3H).

1. extractionThe resulting mixture was extracted with EtOAc (100 mL×3)
2. dry with materialthe combined organics were dried over anhydrous Na2SO4
3. customevaporated under vacuum