Herbicidal sulfonylureas, their preparation and use

Details Herbicidal sulfonylureas, their preparation and use Herbicidal sulfonylureas, their preparation and use

C - Chemistry, Metallurgy

07

D

C07D 239/47 (2006.01) A01N 47/36 (2006.01) C07D 251/16 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2149239

Described are sulphonyl urea compounds of the general formula I in which R1 is a methyl or ethyl group; R2 is C1-C3 alkoxycarbonyl, a C1-C2 alkyl group with 1 to 5 fluorine atoms, methylsulphonyl, dimethylaminosulphonyl, thiomethyl, methylsulphoxide, methylsulphonyloxy, trifluoromethoxy, difluoromethoxy, difluorochloromethoxy, difluorochloromethyl or nitro; R3 is hydrogen; methyl, methoxy, ethoxy, fluorine, chlorine or thiomethyl; W is hydrogen or chlorine and Z is CH or N; plus salts of these compounds suitable for use in agriculture.

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