反应详情

A solution of 4-(4-fluoro-3-nitrophenyl)-1-methyl-1H-pyrazole (1.6 g, 7.239 mmol), N-(3-amino-5-bromophenyl)acetamide (1.98 g, 8.687 mmol) and potassium fluoride (0.503 g, 8.687 mmol) in DMF was heated at 130° C. for 48 h. The mixture was quenched and extracted as in Example 1(d). The solvent was distilled off to afford the crude residue which was purified by column chromatography (60-120 silica gel, 50% ethyl acetate in hexane) to yield the title product in 35% yield (1.1 g); LC-MS (API): Calculated mass: 430.1; Observed mass: 432 [M+H]+ (rt: 1.50 min).

1. customThe mixture was quenched
2. extractionextracted as in Example 1(d)
3. distillationThe solvent was distilled off
4. customto afford the crude residue which
5. customwas purified by column chromatography (60-120 silica gel, 50% ethyl acetate in hexane)