Substituted 2-phenyl-3(2h)-pyridazinones

Details Substituted 2-phenyl-3(2h)-pyridazinones Substituted 2-phenyl-3(2h)-pyridazinones

C - Chemistry, Metallurgy

07

D

C07D 237/20 (2006.01) A01N 43/58 (2006.01) C07D 237/22 (2006.01) C07D 405/10 (2006.01)

Patent

CA 2303986

The invention concerns substituted 2-phenyl-3(2H)-pyridazinones of formula (I), and their salts. In said formula, n = 0, 1, 2; R1 = alkyl C1-C4, alkyl halide C1-C4; R2 = H, halogen; R3 = halogen, CN; R4 = H, NO2, CN, CHO, NH-OH, alkyl C1-C4, alkyl halide C1-C4, -OR5, -CH=N-OR6, -CH=C(R7)-CO-OR8, -CO-OR9, alkyl C1-C6 -SO2-NH, di(alkylsulphonyl C1-C6)amino or (a); R5 = alkyl C1-C6, alkenyl C3-C6, alkinyl C3-C6, (alkoxy C1-C6)carbonyl-alkyl C1-C4, (alkenyloxy C3-C6)carbonyl-alkyl C1-C4, (alkinyloxy C3-C6)carbonyl-alkyl C1-C4, alkoxy C1- C4-(alkoxy C1-C4) carbonyl-alkyl C1-C4; R6 = H, alkyl C1-C4, hydroxycarbonyl- alkyl C1-C4, (alkoxy C1-C4) carbonyl-alkyl C1-C4; R7 = H, halogen, alkyl C1- C4; R8 = H, alkyl C1-C6; R9 = H, alkyl C1-C6, alkenyl C3-C6, alkinyl C3-C6, alkoxy-C1-C4-alkoxy C1-C4, hydroxycarbonyl-alkyl C1-C4, (alkoxy C1-C6)carbonyl- alkyl C1-C4, (alkenyloxy C3-C6)carbonyl-alkyl C1-C4, (alkinyloxy C3- C6)carbonyl-alkyl C1-C4, alkoxy C1-C4-(alkoxy C1-C4)carbonyl-alkyl C1-C4; R10 = H, alkyl C1-C6, COOH, (alkoxy C1-C6)carbonyl. Said compounds are used as herbicides for desiccation/defoliation of plants.

L'invention concerne des 2-phényle-3(2H)-pyridazinones substituées de la formule (I), ainsi que leurs sels. Dans cette formule, n = 0, 1, 2; R?1¿ = alkyle C¿1?-C¿4?, halogénure d'alkyle C¿1?-C¿4?; R?2¿ = H, halogène; R?3¿ = halogène, CN; R?4¿ = H, NO¿2?, CN, CHO, NH-OH, alkyle C¿1?-C¿4?, halogénure d'alkyle C¿1?-C¿4?, -OR?5¿, -CH=N-OR?6¿, -CH=C(R?7¿)-CO-OR?8¿, -CO-OR?9¿, alkyle C¿1?-C¿6?-SO¿2?-NH, di(alkylesulfonyle C¿1?-C¿6?)amino ou (a); R?5¿ = alkyle C¿1?-C¿6?, alkényle C¿3?-C¿6?, alkinyle C¿3?-C¿6?, (alcoxy C¿1?-C¿6?)carbonyle-alkyle C¿1?-C¿4?, (alkényloxy C¿3?-C¿6?)carbonyle-alkyle C¿1?-C¿4?, (alkinyloxy C¿3?-C¿6?)carbonyle-alkyle C¿1?-C¿4?, alcoxy C¿1?-C¿4?-(alcoxy C¿1?-C¿4?)carbonyle-alkyle C¿1?-C¿4?; R?6¿ = H, alkyle C¿1?-C¿4?, hydroxycarbonyle-alkyle C¿1?-C¿4?, (aloxy C¿1?-C¿4?)carbonyle-alkyle C¿1?-C¿4?; R?7¿ = H, halogène, alkyle C¿1?-C¿4?; R?8¿ = H, alkyle C¿1?-C¿6?; R?9¿ = H, alkyle C¿1?-C¿6?, alkényle C¿3?-C¿6?, alkinyle C¿3?-C¿6?, alcoxy C¿1?-C¿4?-alcoxy C¿1?-C¿4?, hydroxycarbonyle-alkyle C¿1?-C¿4?, (alcoxy C¿1?-C¿6?)carbonyle-alkyle C¿1?-C¿4?, (alkényloxy C¿3?-C¿6?)carbonyle-alkyle C¿1?-C¿4?, (alkinyloxy C¿3?-C¿6?)carbonyle-alkyle C¿1?-C¿4?, alcoxy C¿1?-C¿4?-(alcoxy C¿1?-C¿4?)carbonyle-alkyle C¿1?-C¿4?; R?10¿ = H, alkyle C¿1?-C¿6?, COOH, (alcoxy C¿1?-C¿6?)carbonyle. Ces composés s'utilisent comme herbicides, pour la dessiccation/défoliation de plantes.

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