2-Fluorobenzoyl chloride → N-(4-Cyano-1,3-dimethyl-1H-pyrazol-5-yl)-2-fluorobenzamide

Participants

Reaction Steps

5-Amino-1,3-dimethyl-1H-pyrazole-4-carbonitrile (10 g, 73.4 mmole) was suspended in pyridine (90 ml) and 2-fluorobenzoyl chloride was added dropwise while cooling the reaction mixture on an ice bath. The mixture reaction was stirred overnight at room temperature. Most of the pyridine was removed and 100 ml of cold water was added to precipitate the product. The product was isolated by filtration, washed with cold water and a small amount of cold ethanol, and dried under vacuum to obtain 9.15 g of product (yield: 50%).

Provenance & Evidence