| abstract |
The present invention provides compounds of formula (I) wherein X is methyl or chlorine; R 1 is fluorine or bromine; R 2 is ethynyl, C 1 -C 3 alkoxy, C 1 -C 3 halo alkoxy or C 1 -C 3 alkoxy -C 1 -C 3 alkoxy, - and; Q is-3,5-dione-4-yl, thiopyran-3,5-dione-4-yl, piperidine -3 , 5-dione-4-yl, cyclohexane-1,3,5-trione-2-yl, cyclohexane-1,3-dione-2-yl, cycloheptane-1,3-dione-2-yl, Each cyclic dione is bridged by alkanediyl), or a derivative thereof (eg, an enol ketone tautomer derivative thereof), wherein Q is further defined herein; The compound of (I) is optional In 択的 present as a agrochemically acceptable salt thereof. Preferably, X is methyl; and / or R 1 is fluorine; and / or R 2 is —O—R 2A where R 2A is methyl, ethyl, trifluoromethyl, difluoromethyl. , Trifluoroethyl, or —CH 2 CH 2 OCH 3 . These compounds are suitable for use as herbicides. Accordingly, the present invention provides a method for controlling weeds, particularly grasses monocotyledonous weeds in useful plant crops, comprising a compound of formula (I) or a herbicidal composition comprising such a compound. It also relates to a method comprising the step of applying the product to weeds and / or plants and / or places. |