| abstract |
The invention relates to herbicidally effective 3-[benz(ox/thi)azol-7-yl]-1H-pyrimidine-2,4-diones of formula (I) and their salts; X = oxygen or sulphur; Y= oxygen or sulphur; Z = chemical bond, C1-C4-alkylene, O, S, SO, SO2; R<1>= H, NH2, C1-C6-alkyl, C1-C6-alkyl halide; R<2> = H, halogen, C1-C6-alkyl, C1-C6-alkyl halide, C1-C6-alkylthio, C1-C6-alkylsulfinyl or C1-C6-alkylsulfonyl; R<3> = H, halogen, C1-C6-alkyl; R<4> = H, halogen; R<5> = CN, halogen, C1-C6-alkyl, C1-C6-alkyl halide, C1-C6-alkoxy or C1-C6-halogenalkoxy; R<6> = H, C3-C7-cycloalkyl, 3 to 7-membered saturated heterocyclyl containing one or more oxygen and/or sulphur atoms, whereby each cycloalkyl ring and each heterocyclyl ring can contain a carbonyl or thiocarbonyl ring member and whereby each cycloalkyl ring and each heterocyclyl ring can be unsubstituted or carry 1-4 substituents. The invention also relates to the agriculturally usable salts of the compounds of formula (I). |