反应详情

A solution of 5-bromo-2-nitro-N-propylbenzenamine (250 mg, 1.02 mmol) and phenyl(piperazin-1-yl)methanone (578 mg, 3.06 mmol) in NMP (2 mL) was heated to 110° C. for 16 h. The solution was cooled to room temperature to which was slowly added H2O (5 mL). The resulting yellow precipitate was filtered, washed with 2 mL of water, dried (high vacuum, 14 h) to furnish (4-(4-nitro-3-(propylamino)phenyl)piperazin-1-yl)(phenyl)methanone (520 mg, 2.18 mmol), 56% yield. 1H NMR (500 MHz, DMSO-D6) d (ppm) 8.83 (m, 1H), 7.93 (d, J=9.5 Hz, 1H), 7.50-7.45 (m, 5H), 6.41 (dd, J=2.5 Hz, 10 Hz, 1H), 6.00 (d, J=2.5 Hz, 1H), 3.72-3.40 (m, 8H), 3.29 (q, J=7 Hz, 2H), 1.66 (m, 2H), 0.96 (t, J=7 Hz, 3H).+ESI HRMS (calcd for C20H24N4NaO, M+Na) 391.1746. found 391.1741

1. filtrationThe resulting yellow precipitate was filtered
2. washwashed with 2 mL of water
3. customdried (high vacuum, 14 h)