反应详情

1-(3,5-Dimethoxyphenyl)ethanamine (670 mg, 4.2 mmol), 2,4-difluoronitrobenzene (764 mg, 4.2 mmol) and N,N-diisopropylethylamine (1.08 mg, 8.4 mmol) were stirred at room temperature in dry acetonitrile (50 mL) for 6 h. The solvent was evaporated and the residue was dissolved in dichloromethane and washed with water. The dichloromethane was evaporated to collect the title compound (820 mg, 61% yield). 1H NMR (400 MHz, CDCl3): δ 8.49 (s, 1H), 8.19 (m, 1H), 6.45 (s, 2H), 6.30 (m, 3H), 4.48 (m, 1H), 3.76 (s, 6H), 1.62 (d, 3H); MS (ESI) m/z: Calculated for C16H17FN2O4: 320.12; Observed: 343.2 (M++1).

1. customThe solvent was evaporated
2. dissolutionthe residue was dissolved in dichloromethane
3. washwashed with water
4. customThe dichloromethane was evaporated