Potassium Carbonate → HCID 73438561, compound

Participants

Reaction Steps

A solution of 2-(3-chloro-2-pyridyl)-5-(trifluoromethyl)pyrazole-3-carbonyl chloride (210.7 g, 0.68 mol, 1.10 equiv.) in acetonitrile (500 mL) was added at 22° C. to a suspension of potassium carbonate (103.34 g, 0.74 mol, 1.20 equiv) and 2-amino-3,5-dichloro-N-(diethyl-λ4-sulfanylidene)-benzamide (181.79 g, 0.62 mol, 1.00 equiv) in acetonitrile (2 L). After 2.5 h at this temperature, the reaction mixture was poured into ice-water with stirring. The resulting precipitate was collected by filtration and washed with water and petrol ether. Trituration from diisopropyl ether yielded the crystalline title compound (305 g, 87%).

Provenance & Evidence