Potassium Carbonate → N-[2-(3,5-dichloropyridin-2-yl)-2-(2,2,2-trifluoroethoxyimino)ethyl]-2-(trifluoromethyl)benzamide

Participants

Reaction Steps

To 2.0 g of 2-amino-1-(3,5-dichloropyridin-2-yl)ethanone-O-(2,2,2-trifluoroethyl)oxime hydrochloride in 12.0 ml of water, 1.4 g of 2-(trifluoromethyl)benzoyl chloride in 12.0 ml of dichloromethane and 2.4 g of potassium carbonate were added at room temperature with stirring, and the mixture was stirred at the same temperature for 2 hours. After completion of the reaction, the resulting organic layer was collected and dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The resulting residue was purified by silica gel column chromatography using ethyl acetate-hexane (with a gradient of from 5:95 to 50:50) as the eluent to obtain 2.6 g of the desired product as a pale yellow resinous substance.

Provenance & Evidence