反应详情

温度

120 °C

A homogeneous mixture of 4-fluoro-3-methylnitrobenzene 1 (20 g, 129 mmol) and N-methylpiperazine 3 (25.82 g, 258 mmol) in N-methylpyrrolidone (NMP) (10 mL) was refluxed (120° C.) under N2 for 24 hours. The reaction mixture upon cooling to room temperature was poured over a saturated NaCl solution (100 mL). The resulting solid was sonicated for approx. 30 seconds, filtered, washed with ice-cold water (2×10 mL) and dried under high vacuum to obtain 4-(4-methylpiperazin-1-yl)-3-methylnitrobenzene 5 (28 g, 92%). 1H NMR (CD3OD): δ 8.02 (m, 2H), 7.13 (d, 1H, J=9.3 Hz), 3.08 (m, 4H), 2.66 (m, 4H), 2.38 (s, 6H); LCMS: purity: 99%, MS (m/e): 236 (MH+).

1. temperatureThe reaction mixture upon cooling to room temperature
2. customThe resulting solid was sonicated for approx. 30 seconds
3. filtrationfiltered
4. washwashed with ice-cold water (2×10 mL)
5. customdried under high vacuum