反应详情

2,4-Difluoro-1-nitrobenzene (2.00 g, 12.57 mmol) was dissolved in acetonitrile (20 mL) and DIPEA (2.2 mL, 12.57 mmol) added, followed by the dropwise addition of benzylamine (1.35 g, 12.57 mmol). The reaction mixture was stirred at RT, under an atmosphere of nitrogen overnight. The mixture was concentrated in vacuo to afford the title compound as a yellow oil, which solidified on standing (3.8 g, 100%). The crude material was used without purification in the next step. 1H NMR (CDCl3, 400 MHz): δ 8.55 (1H, s), 8.25 (1H, dd, J=9.46, 6.08 Hz), 7.43-7.29 (5H, m), 6.47 (1H, dd, J=11.35, 2.60 Hz), 6.39 (1H, ddd, J=9.46, 7.28, 2.61 Hz), 4.51 (2H, d, J=5.60 Hz)

1. concentrationThe mixture was concentrated in vacuo