Trifluoroacetic anhydride → HCID 66682449, compound

Participants

Reaction Conditions

Reaction Steps

4.35 g of 3-[(benzyloxy)methyl]-1-(3-chloropyridin-2-yl)-5-(trichloromethyl)-4,5-dihydro-1H-pyrazol-5-ol were dissolved in 30 ml of methyl isobutyl ether. Then 3 g of trifluoroacetic anhydride were added (exothermic reaction). The mixture was stirred at 25° C. for a further 2 h, in the course of which the precipitate was formed. The precipitate was filtered off and washed. The yield was 95%.

Provenance & Evidence