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 reaction mixture on an ice bath. Stirred reaction mixture overnight at room temperature. Removed most of the pyridine and added 100 ml cold water to precipitate the product. Isolated product by filtration, washed with cold water, small amount of cold ethanol and dried under vacuum to obtain 9.15 g product (yield: 50%).

Provenance & Evidence