Chlorine → HCID 13921223, compound

Participants

Reaction Steps

Into a solution of 1-(2-fluoro-4-chloro-5-methylsulfonyloxyphenyl)-3-trifluoromethyl-5-methylpyrazole (37.3 g) in chloroform (200 ml) was introduced chlorine gas (7.1 g) at 60° C. for 20 minutes. Removal of the solvent from the reaction solution by distillation in vacuo gave the titled compound (40.2 g) as a pale yellow oil which soon crystallized on standing at room temperature. Recrystallization from a mixture of n-hexane/benzene yielded a white crystalline solid. m.p. 72°-74.5° C.

Provenance & Evidence