Acetic Anhydride → HCID 86720246, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-(3-chloro-2-pyridyl)-N-[2,4-dichloro-6-hydroxycarbonyl-phenyl]-5-(trifluoromethyl)pyrazole-3-carboxamide (18.4 g, 38.3 mmol) in methylene chloride (130 mL) was added acetic anhydride (39.4 mL, 417 mmol). The reaction was then heated to 55° C. for 2 h and then stirred for a further 16 h at room temperature. The resulting solid was filtered and washed with cold methylene chloride. Trituration with diethyl ether afforded the title compound (10.1 g, 57%).

Provenance & Evidence