abstract |
The present invention relates to a compound of the formula (I): (I) wherein: X is methyl or chlorine; R1 is fluorine or bromine; R2 is ethynyl, C1-C3 alkoxy, C1-C3 haloalkoxy, or (C1-C3) alkoxy-(C1-C3)-alkoxy-; and Q is a pyran-3,5-dione-4-yl, a thiopyran-3,5-dione-4-yl, a piperidine-3,5-dione-4-yl, a cyclohexane-1,3,5 -trione-2-yl, a cyclohexane-1,3-dione-2-yl, a cycloheptane-1,3-dione-2-yl, each cyclic dione being alkanediyl bridged, or a derivative thereof (for example, an enol ketone tautomer derivative thereof), wherein Q is further defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. Preferably X is methyl; and/or R1 is fluorine; and/or R2 is -O-R2A, where R2A is methyl, ethyl, trifluoromethyl, difluoromethyl, trifluoroethyl, or -CH2CH2OCH3. These compounds are suitable for use as herbicides. Consequently, the invention also relates to a method of controlling weeds, in particular monocotyledonous grass weeds, in crops of useful plants, which comprises the application of (...). |