反应详情

温度

80 °C

To a stirred solution of 3-(methylamino)-4-nitrobenzonitrile (0.9 g, 0.005 mol) and NBS (0.9 g, 0.005 mol) in DMF (15 ml), AIBN (catalytic) was carefully added and the resulting solution was stirred at 80° C. for 3 h. The reaction was diluted with H2O and extracted with dichloromethane (3×30 ml). The combined organic layers were washed with brine, dried over Na2SO4 and concentrated under vacuum to afford the title compound 2-bromo-5-(methylamino)-4-nitrobenzonitrile as a yellow solid. 1H NMR (400 MHz, CDCl3), δ: 8.44 (s, 1H), 8.04 (bs, 1H), 7.18 (s, 1H), 3.05 (s, 3H). MS (M+1): 256.12.

1. extractionextracted with dichloromethane (3×30 ml)
2. washThe combined organic layers were washed with brine
3. dry with materialdried over Na2SO4
4. concentrationconcentrated under vacuum