Substituted n-(-1,3,4-oxadiazole-2-yl)aryl carboxamides and the use thereof as herbicides

An N-(1,3,4-oxadiazol-2-yl)arylcarboxamide of formula (I) or salt thereof

• wherein the substituents have the following meanings:
• A represents N or C—Y,
• R represents hydrogen or (C1-C6)-alkyl,
• X represents halogen or (C1-C6)-alkyl,
• Y represents halogen, (C1-C6)-alkyl, C(O)N(R1)2, S(O)nR2, or 2-oxoazetidin-1-yl,
• Z represents halogen, (C1-C6)-alkyl, halo-(C1-C6)-alkyl, or R2(O)nS,
• V represents hydrogen, halogen or (C1-C6)-alkyl,
• W represents hydrogen, halogen or (C1-C6)-haloalkyl,
• with the proviso that in each case at least one of the radicals V and W does not represent hydrogen,
• R1 represents hydrogen, (C1-C6)-alkyl, (C1-C6)-haloalkyl, or (C3-C6)-cycloalkyl-(C1-C6)-alkyl,
• R2 represents (C1-C6)-alkyl, and
• n represents 0, 1 or 2,
• with the proviso that the compounds
• 4-bromo-2,6-difluoro-2-N-(5-methyl-1,3,4-oxadiazol-2-yl)benzamide and
• 4-bromo-2,6-difluoro-2-N-(5-cyclopropyl-1,3,4-oxadiazol-2-yl)benzamide
• are excluded.