Herbicidally active bithiophene compounds

摘要

Herbicidal compositions containing a thiophene compound of the general formula I <IMAGE> in which R<1> to R<4> represent hydrogen, halogen, branched or unbranched C1-C8-alkyl, C1-C8-alkoxy, C1-C4-haloalkyl or C1-C4- haloalkoxy; preferably methyl, ethyl, n-propyl, isopropyl, cyclopropyl, hexyl, cyclohexyl or, if appropriate, methoxy, ethoxy, isopropyloxy, propyloxy, cyclopropyloxy, fluorine, chlorine or bromine, A represents a) thiocarboxamide, b) pyridine or quinoline, each of which is unsubstituted or substituted by up to two of the radicals R<1> to R<4>, c) or heterocyclic, optionally benzo-fused, 5-membered ring which is unsubstituted or ... by halogen branched or unbranched C1-C6-alkyl, C1-C4-alkoxy, C1-C4-alkylthio, amino-, alkylamino- or dialkylamino-substituted C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylthio; C1-C4-alkoxycarbonyl, C1-C4-haloalkyl, C3-C6-cycloalkyl or aryl which can be up to trisubstituted by halogen, C1-C6-alkoxy, C1-C4-haloalkyl or C1-C4-haloalkoxy, and nitrogen which, in turn, can be substituted by acyl, haloacyl, aroyl or hetaroyl, each of which, in turn, can be up to trisubstituted by halogen, C1-C6-alkoxy, C1-C4-haloalkyl, C1-C6-alkyl or C1-C4-haloalkoxy, this heterocyclic, optionally benzo-fused 5-membered ring having nitrogen, sulphur or oxygen ring atoms selected from the series consisting of pyrazole, furan, pyrrole, oxazole, isoxazole, thiazole, imidazole and their ... Original abstract incomplete.