HALOGENATED TRIFLUOROMETHYLBENZENES

摘要

Novel halogenated trifluoromethylbenzenes have the structural formula <IMAGE> wherein X is halogen, preferably Cl, F or Br, and R is a group selected from the group consisting of -COOH, -C(O)NH2 and -CN. These compounds are intermediates for pesticidal trifluoromethyl diphenyl ethers and are converted thereto by replacing the fluorine para to the trifluoromethyl with substituted phenoxy group in aromatic nucleophilic substitution. A novel intermediate which is converted by reaction with cuprous cyanide and HONO to compound having the above structural formula where X is F and R is -CN is 2,3-difluoro-5-(trifluoromethyl)aniline and has the formula <IMAGE>