METHOD FOR THE PREPARATION OF N-PIPERIDINO-1, 5-DIPHENYLPYRAZOLE-3-CARBOXAMIDE DERIVATIVES

摘要

A process for the preparation of for the preparation of N-piperidino-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-3-carboxamide and of its salts, wherein 1,5-dibromopentane is reacted with a compound of formula (IIIa) in the presence of Na₂CO₃ in acetonitrile heated at reflux.