Substituted 1-methyl-3-phenylpyrazoles

Details Substituted 1-methyl-3-phenylpyrazoles Substituted 1-methyl-3-phenylpyrazoles

C - Chemistry, Metallurgy

07

D

C07D 231/18 (2006.01) A01N 43/56 (2006.01)

Patent

CA 2235323

The invention relates to substituted 1-methyl-3-phenylpyrazoles (I) and the agriculturally useful acid addition salts thereof, in which R1 is C1-C4 alkylhalide or C1-C4 alkylthiohalide; R2 is halogen; R3 is F or Cl; R4 is CN, C1-C4 fluoroalkyl, C2-C4 fluoroalkenyl or -C(R5) (X-R6) (Y-R7); R5 is H or C1- C4 alkyl; X and Y are -O- or -S-; R6, R7 is C1-C4 alkyl, C1-C4 alkylhalide, C3- 4 alkenyl, C3-C4 alkenylhalide or C3-C4 alkinyl. It also relates to the use thereof as herbicides and for the desiccation or defoliation of plants.

L'invention concerne des 1-méthyl-3-phénylpyrazoles substitués de la formule (I) et leurs sels d'addition d'acide utilisables en agriculture. Dans cette formule (I), R?1¿ désigne halogénure d'alcoxy C¿1?-C¿4? ou halogénure d'alkylthio C¿1?-C¿4?; R?2¿ désigne halogène; R?3¿ désigne F ou Cl; R?4¿ désigne CN, fluoroalkyle C¿1?-C¿4?, fluoroalcényle C¿2?-C¿4? ou -C(R?5¿)(X-R?6¿)(Y-R?7¿); R?5¿ désigne H ou alkyle C¿1?-C¿4?; X et Y désignent -O- ou -S-; R?6¿, R?7¿ désignent alkyle C¿1?-C¿4?, halogénure d'alkyle C¿1?-C¿4?, alcényle C¿3?-C¿4?, halogénure d'alcényle C¿3?-C¿4? ou alkinyle C¿3?-C¿4?. Ces composés s'utilisent comme herbicides, ainsi que pour la dessiccation/défoliation de plantes.

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