反应详情

To a suspension containing 0.16 g of 1,2-difluoro-4-nitrobenzene (2) and 0.28 mL of N-diisopropyl ethylamine (DIPEA) in 4 mL acetonitrile, 0.19 of 1-(4-methoxyphenyl)piperazine (1) was added. The reaction mixture was stirred at room temperature for over night (12 h). The reaction mixture was filtered to get the yellowish solid. Then the collected solid was washed with hexane to get nitro compound 3 (0.25 g, 75%). 1H NMR (400 MHz, CDCl3, δH): 8.01 (dd, J=8.8, 2.4 Hz, 1H), 7.93 (dd, J=12.8, 2.4 Hz, 1H), 6.99-6.97 (m, 3H), 6.89-6.87 (m, 2H), 3.79 (s, 3H), 3.47 (bs, 4H), 3.26 (d, J=4.8 Hz, 4H). 13C NMR (100 MHz, CDCl3, δC): 154.4, 151.9, 121.0, 118.9, 117.3, 114.6, 112.8, 112.5, 55.6, 51.0, 49.6.

1. additionwas added
2. filtrationThe reaction mixture was filtered
3. customto get the yellowish solid
4. washThen the collected solid was washed with hexane