Herbicidal sulfonylureas, the preparation thereof and...

C - Chemistry – Metallurgy – 07 – D

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C07D 239/46 (2006.01) A01N 47/36 (2006.01) C07D 239/48 (2006.01) C07D 239/52 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2037838

Substituted sulfonylureas of the general formula I (see formula I) where n and m are each 0 or 1, and R1 is hydrogen, alkyl, alkenyl or alkynyl; R2 is halogen or trifluoromethyl when m is 0, or, when m is 1, alkyl, alkenyl or alkynyl and, when X is 0 or S and m is 1, is trifluoro- methyl or chiorodifluoromethyl; x is 0, S or N-R4, where R4 is hydrogen or alkyl; R3 is hydrogen, halogen, alkyl, haloalkyl or alkoxy; A is haloalkyl, halogen or (see formula) where B is oxygen or alkylimino N-R6; R5 is hydrogen, substituted or unsubstituted alkyl, substituted or un- substituted cycloalkyl, alkenyl or alkynyl; R6 is hydrogen, alkyl, or together with R5 is a C4-C6-alkylene chain, where one methylene may be replaced by an oxygen atom or a C1-C4- alkylimino group, and R7 is hydrogen or halogen, and environmentally tolerated salts thereof, processes and intermediates for the manufacture of compounds I, and their use as herbicides and bioregulators.

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