Herbicidal sulfonylureas, the preparation and use thereof

Details Herbicidal sulfonylureas, the preparation and use thereof Herbicidal sulfonylureas, the preparation and use thereof

C - Chemistry, Metallurgy

07

D

260/261, 71/7.25

C07D 239/47 (2006.01) A01N 47/36 (2006.01) C07D 413/12 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2005595

Substituted sulfonylureas of the general formula I Image , where R1 is hydrogen, C1-C3-alkyl, C3-C6-alkenyl or C3-C6-alkynyl; R2 is C1-C4-alkyl; R3 is hydrogen or halogen, and A is halogen or a radical Image where B is oxygen or an alkylimino group Image R4 is hydrogen, C1-C6-alkyl which can carry up to three of the following: halogen, C1-C4-alkoxy, C1-C4-alkylthio, C1-C4-halo-alkoxy, C1-C4-alkoxy-C1-C2-alkoxy, C3-C7-cycloalkyl and/or phenyl; C5-C7-cycloalkyl which can carry up to three C1-C4-alkyls; C3-C6-alkenyl or C3-C6-alkynyl, and R5 is hydrogen, C1-C6-alkyl, or together with R4 is a C4-C6-alkylene chain in which one methylene can be replaced by oxygen or C1-C4-alkylimino, processes for their manufacture, and their use as herbicidal and growth-regulating agents.

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