1-(pyridyl)pyrazoles

Details 1-(pyridyl)pyrazoles 1-(pyridyl)pyrazoles

C - Chemistry, Metallurgy

07

D

C07D 401/04 (2006.01) A01N 43/56 (2006.01) A01N 47/18 (2006.01) C07D 405/14 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2226765

The invention concerns substituted 1-(pyridyl)-pyrazols of general formula (I) in which the substituents have the following meanings: R1: hydrogen, C1-C3 alkyl, halogen, C1-C3 alkyl halide; R2: C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkinyl, C1-C4 alkoxy, C3-C4 alkenyloxy, C3-C4 alkinyloxy, which can be substituted by 1 to 6 halogen atoms, NO2, cyano, halogen, rhodano, amino, furthermore a C(=O)R7, S(O)nR8 or NH-C(=O)R9 group; R3: amino, halogen, rhodano, cyano, nitro, hydroxy, C1-C3 alkyl, C1-C3 alkyl halide, furthermore an S(O)nR8, N(R10)R11, OR12, SR13, N=C(R14)-N(R15)R16 group or, if R1 = hydrogen, additionally N=C(R17)R18; R4: halogen, an XR19 group or, if R3 = N=C(R14)-N(R15)R16 and N(R10)R11 when R10 = hydrogen or C(=O)R7 and R11 = C3- C4 alkenyl or C3-C4 alkinyl or, if R6 = fluorine or trifluoromethyl, additionally hydrogen; and R5, R6: independently of each other, halogen or C1- C3 alkyl halide. The invention further concerns the N-oxides and salts of compounds (I) which can be used for agricultural purposes, processes for their preparation and their use as herbicides.

L'invention concerne des 1-(pyridyl)-pyrazoles de la formule générale (I) dans laquelle les substituants ont la signification suivante: R?1¿ désigne hydrogène, alkyle C¿1?-C¿3?, halogène, halogénure d'alkyle C¿1?-C¿3?; R?2¿ désigne alkyle C¿1?-C¿4?, alcényle C¿2?-C¿4?, alkinyle C¿2?-C¿4?, alcoxy C¿1?-C¿4?, alcényloxy C¿3?-C¿4?, alkinyloxy C¿3?-C¿4?, qui peuvent être substitués par 1 à 6 atomes d'halogène, NO¿2?, cyano, halogène, rhodano, amino, en outre un reste C(=O)R?7¿, S(O)¿n?R?8¿ ou NH-C(=O)R?9¿; R?3¿ désigne amino, halogène, rhodano, cyano, nitro, hydroxy, alkyle C¿1?-C¿3?, halogénure d'alkyle C¿1?-C¿3?, en outre un reste S(O)¿n?R?8¿, N(R?10¿)R?11¿, OR?12¿, SR?13¿, N=C(R?14¿)-N(R?15¿)R?16¿ ou si R?1¿ désigne hydrogène, également N=C(R?17¿)R?18¿; R?4¿ désigne halogène, un reste XR?19¿ ou si R?3¿ désigne N=C(R?14¿)-N(R?15¿)R?16¿ et N(R?10¿)R?11¿ lorsque R?10¿ = hydrogène ou C(=O)R?7¿ et R?11¿ = alcényle C¿3?-C¿4? ou alkinyle C¿3?-C¿4? ou, si R?6¿ = fluor ou trifluorométhyle, également hydrogène; R?5¿, R?6¿ désignent indépendamment l'un de l'autre halogène ou halogénure d'alkyle C¿1?-C¿3?. L'invention concerne également les oxydes de N et les sels utilisables en agriculture des composés de la formule (I), des procédés permettant de les préparer et leur utilisation comme herbicides.

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