| abstract |
N-Benzoyl-N'-pyridylureas of the formula <IMAGE> in which X is chlorine, fluorine or hydrogen and Y is chlorine or fluorine, with the proviso that X and Y are not simultaneously chlorine, and Z is hydrogen or chlorine and R represents 4-chlorophenyl, 2,4-dichlorophenyl or 3-trifluoromethylphenyl if A is oxygen, or Z represents hydrogen and R represents 4-chlorophenyl and the pyridine ring is in the 2-position by the radical <IMAGE> and in 5- Position is substituted by the radical -AR when A is sulfur, and N-oxides of the compounds in which A is oxygen, processes for their preparation and their use for controlling pests. |