反应详情

1-{[5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazol-3-yl]carbonyl}-4-phenylpiperidin-4-amine (1 eq, 35.3 mg, 0.066 mmol) was stirred in a mixture of acetic anhydride (2 mL) and pyridine (2 mL) for 16 h. The reaction was concentrated in vacuo. The crude reaction material was then purified by silica gel column chromatography using 0-100% ethyl acetate/hexane to yield pure N-(1-{[5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazol-3-yl]carbonyl}-4-phenylpiperidin-4-yl)acetamide (27 mg, 71%). 1H NMR (300 MHz, CHLOROFORM-d) d ppm 2.01 (s, 3H) 2.05-2.19 (m, 2H) 2.21 (s, 3H) 2.34 (d, J=14.60 Hz, 1H) 2.66 (d, J=13.85 Hz, 1H) 3.15-3.34 (m, 1H) 3.52 (t, J=11.68 Hz, 1H) 4.26 (d, J=13.75 Hz, 1H) 4.54 (d, J=13.75 Hz, 1H) 6.10 (s, 1H) 7.03-7.11 (m, 2H) 7.14-7.19 (m, 1H) 7.19-7.41 (m, 8H) 7.44 (d, J=2.17 Hz, 1H).

1. concentrationThe reaction was concentrated in vacuo
2. customThe crude reaction material
3. customwas then purified by silica gel column chromatography