Acetic Anhydride → N-(4-((2-acetamidopyridin-4-yl)oxy)-2-chlorophenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a suspension of N-(4-((2-aminopyridin-4-yl)oxy)-2-chlorophenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide (125 mg, 0.28 mmol) in acetic anhydride (6.0 mL) was added triethylamine (0.4 mL). The reaction mixture was stirred at 35° C. for 13 hours, then filtered, and the filter cake was washed with petroleum ether (6 mL), MeOH (3 mL), and ethyl acetate (6 mL) respectively to give the title compound as a light blue solid (87 mg, 63%).

Provenance & Evidence