Novel thiophenesulfonylurea derivatives and herbicidal...

C - Chemistry – Metallurgy – 07 – D

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Details

C07D 409/12 (2006.01) A01N 47/36 (2006.01) C07D 333/26 (2006.01) C07D 333/34 (2006.01) C07D 491/044 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2175819

The present invention relates to a thiophenesulfonylurea derivative represented by general formula (I), the process for preparation thereof, and herbicide using it; and a salt thereof, in which T represents a group T1, T2, or T3 having general formula (a), wherein E represents a direct bond; R represents hydrogen or C1-4 acyl; R1 represents C1-6 alkyl substituted with 1 to 3 halogen atoms; R2 represents hydrogen, C1-3 alkyl, C1-3 haloalkyl, halogen, cyano, C1-3 alkoxy, C1-3 haloalkoxy, amino, methylamino, dimethylamino, or C1-2 alkyl substitued with C1-2 alkoxy, C1-2 haloalkoxy, thiol, methylthio, cyano or hydroxy; A represents a group selected from A1 to A4 having general formulae (b), and a herbicidal composition containing these derivatives.

Dérivé de thiophénesulfonylurée répondant de la formule générale (I), ou son sel, son procédé de préparation, et désherbant le mettant en oeuvre. Dans ladite formule (I), T représente un groupe T1, T2 ou T3 répondant de la formule générale (a), dans laquelle R représente une liaison directe; R représente hydrogène ou acyle C¿1-4?; R?1¿ représente alkyl C¿1-6? substitué par 1 à 3 atomes d'haogène; R?2¿ représente hydrogène, alkyle C¿1-3?, haloalkyle C¿1-3?, halogène, cyano, alcoxy C¿1-3?, haloalcoxy C¿1-3?, amino, méthylamino, diméthylamino, ou alkyle C¿1-2? substitué par alcoxy C¿1-2?, haloalcoxy C¿1-2?, thiol, méthyltio, cyano ou hydroxy; et A représente un groupe choisi parmi A1, A2, A3 et A4 ayant les formules (b). On a également prévu une composition désherbante renfermant ces dérivés.

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