Herbicidal pyridylethers

A pyridylether of formula (I)

• wherein the variables have the following meanings:
• R1H or halogen;
• R2H, halogen, CN, NO2, NH2, CF3 or C(═S)NH2;
• R3H, halogen, CN, C1-C3-alkyl, C1-C3-haloalkyl, C1-C3-alkoxy, C1-C3-haloalkoxy, C1-C3-alkylthio, (C1-C3-alkyl)amino, di(C1-C3-alkyl)amino, C1-C3-alkoxy-C1-C3-alkyl, C1-C3-alkoxycarbonyl;
• R4H, halogen, C1-C3-alkyl, C1-C3-alkoxy;
• R5 OR6, SR6, NR7R8, NR6OR6, NR6S(O)2R7 or NR6S(O)2NR7R8, wherein
• R6 is hydrogen, C1-C6-alkyl, C3-C6-alkenyl, C3-C6-alkynyl, C1-C6-haloalkyl, C3-C6-haloalkenyl, C3-C6-haloalkynyl, C1-C6-cyanoalkyl, C1-C6-alkoxy-C1-C6-alkyl, C1-C6-alkoxy-C1-C6-alkoxy-C1-C6-alkyl, di(C1-C6-alkoxy)C1-C6-alkyl, C1-C6-haloalkoxy-C1-C6-alkyl, C3-C6-alkenyloxy-C1-C6-alkyl, C3-C6-haloalkenyloxy-C1-C6-alkyl, C3-C6-alkenyloxy-C1-C6-alkoxy-C1-C6-alkyl, C1-C6-alkylthio-C1-C6-alkyl, C1-C6-alkylsulfinyl-C1-C6-alkyl, C1-C6-alkylsulfonyl-C1-C6-alkyl, C1-C6-alkylcarbonyl-C1-C6-alkyl, C1-C6-alkoxycarbonyl-C1-C6-alkyl, C1-C6-haloalkoxycarbonyl-C1-C6-alkyl, C3-C6-alkenyloxycarbonyl-C1-C6-alkyl, C3-C6-alkynyloxycarbonyl-C1-C6-alkyl, amino, (C1-C6-alkyl)amino, di(C1-C6-alkyl)amino, (C1-C6-alkylcarbonyl)amino, amino-C1-C6-alkyl, (C1-C6-alkyl)amino-C1-C6-alkyl, di(C1-C6-alkyl)amino-C1-C6-alkyl, aminocarbonyl-C1-C6-alkyl, (C1-C6-alkyl)aminocarbonyl-C1-C6-alkyl, di(C1-C6-alkyl)aminocarbonyl-C1-C6-alkyl,
• —N═CR9R10, wherein R9 and R10 independently of one another are H, C1-C4-alkyl or phenyl;
• C3-C6-cycloalkyl, C3-C6-cycloalkyl-C1-C6-alkyl, C3-C6-heterocyclyl, C3-C6-heterocyclyl-C1-C6-alkyl, phenyl, phenyl-C1-C4-alkyl or a 5- or 6 membered heteroaryl,
• wherein each cycloalkyl, heterocyclyl, phenyl or heteroaryl ring can be substituted by one to four substituents selected from R13 or a 3- to 7-membered carbocyclus,
• which carbocyclus optionally has in addition to carbon atoms one or two ring members selected from the group consisting of —N(R9)—, —N═N—, —C(═O)—, —O— and —S—, and
• which carbocyclus is optionally substituted with one to four substituents selected from R11;
• wherein R11 is halogen, NO2, CN, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy or C1-C4-alkoxycarbonyl;
• R7, R8 independently of one another are R6, or together form a 3- to 7-membered carbocyclus,
• which carbocyclus optionally has in addition to carbon atoms one or two ring members selected from the group consisting of —N(R9)—, —N═N—, —C(═O)—, —O— and —S—, and
• which carbocyclus is optionally substituted with one to four substituents selected from R11;
• n 1 to 3;
• Q O, S, SO, SO2, NH or (C1-C3-alkyl)N;
• W O or S;
• X O or S;
• Y is a heterocycle selected from the group consisting of Y1 to Y75
• wherein
• A1, A2, A3 are oxygen or sulfur;
• A4 is oxygen, sulphur, SO or SO2;
• R12, R13, R14, R15, R16, R17 and R18
• are hydrogen, hydroxy, C1-C6-alkyl, C1-C6-haloalkyl, C3-C7-cycloalkyl, C3-C7-cycloalkyloxy, C1-C6-alkoxy, C1-C6-haloalkoxy, C2-C6-alkenyl, C2-C6-haloalkenyl, C2-C6-alkenyloxy, C3-C6-alkynyl, C3-C6-alkynyloxy, C1-C6-alkylthio, C1-C6-alkylsulfinyl, C1-C6-alkylsulfonyl, C1-C6-alkoxysulfonyl, C1-C6-alkylsulfonyloxy, amino, C1-C6-alkylamino or di(C1-C6-alkyl)amino;
• or
• R12 and R13 together with the atoms to which they are attached, form a three- to six-membered cycle, which is saturated, partial unsaturated or aromatic, which may comprise apart from carbon atoms one to four nitrogen atoms, or one or two oxygen atoms, or one or two sulfur atoms, or one to three nitrogen atoms and an oxygen atom, or one to three nitrogen atoms and a sulfur atom, or one sulfur and one oxygen atom, and which for its part may be partially or fully halogenated and/or substituted by one to three radicals from the group consisting of C1-C6-alkyl and C1-C6-alkoxy;
• R19, R20, R21, R22, R23, R24 are hydrogen, cyano, hydroxy, C1-C6-alkyl, C1-C6-cyanoalkyl, C1-C6-haloalkyl, C3-C7-cycloalkyl, C3-C7-cycloalkyloxy, C1-C6-alkoxy, C1-C6-haloalkoxy, C2-C6-alkenyl, C2-C6-haloalkenyl, C2-C6-alkenyloxy, C3-C6-alkynyl, C3-C6-alkynyloxy, C1-C6-alkylsulfinyl, C1-C6-alkylsulfonyl, phenyl-C1-C6-alkyl, amino, C1-C6-alkylamino or di(C1-C6-alkyl)amino;
• or
• R21 and R22 together with the atoms to which they are attached, form a three- to six-membered cycle, which is saturated, partial unsaturated or aromatic, which may comprise apart from carbon atoms one to four nitrogen atoms, or one or two oxygen atoms, or one or two sulfur atoms, or one to three nitrogen atoms and an oxygen atom, or one to three nitrogen atoms and a sulfur atom, or one sulfur and one oxygen atom, and which for its part may be partially or fully halogenated and/or substituted by one to three radicals from the group consisting of C1-C6-alkyl and C1-C6-alkoxy;
• R25 is hydrogen, C1-C6-alkyl, C1-C6-haloalkyl, C2-C6-alkenyl, C3-C6-alkynyl, C1-C6-haloalkoxy, amino, C1-C6-alkylamino or di(C1-C6-alkyl)amino;
• R26 and R27
• are hydrogen, halogen or C1-C6-alkyl;
• R28, R29 and R30
• are hydrogen, halogen, hydroxy, C1-C6-alkyl, C1-C6-haloalkyl, C3-C7-cycloalkyl, C3-C7-cycloalkyloxy, C1-C6-alkoxy, C1-C6-haloalkoxy, C1-C6-alkylthio, C1-C6-haloalkylthio, C2-C6-alkenyl, C2-C6-haloalkenyl, C2-C6-alkenyloxy, C3-C6-alkynyl or C3-C6-alkynyloxy;
• and
• R31 is hydrogen, NH2, C1-C6-alkyl or C3-C6-alkynyl;
• R32, R33 and R34
• are hydrogen, amino, nitro, cyano, carboxy, carbamoyl, thiocarmbamoyl, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C3-C7-cycloalkyl, C3-C7-cycloalkyloxy, C1-C6-alkoxy, C1-C6-haloalkoxy, C1-C6-alkylthio, C1-C6-haloalkylthio, C2-C6-alkenyl, C2-C6-haloalkenyl, C2-C6-alkenyloxy, C3-C6-alkynyl, C3-C6-alkynyloxy, C1-C6-alkoxycarbonyl, C2-C6-alkenylthio, C3-C6-alkynylthio, C1-C6-alkylamino, di(C1-C6-alkyl)amino or C3-C7-cycloalkyl-C1-C3-alkyl;
• R35 and R36
• are hydrogen, cyano, hydroxyl, C1-C6-alkyl, C1-C6-haloalkyl, C3-C7-cycloalkyl, C3-C7-cycloalkyloxy, C1-C6-alkoxy, C1-C6-haloalkoxy, C2-C6-alkenyl, C3-C6-alkynyl, C1-C6-alkoxycarbonyl, amino, C1-C6-alkylamino, di(C1-C6-alkyl)amino, C3-C7-cycloalkyl-C1-C3-alkyl, phenyl or phenyl-C1-C6-alkyl;
• Z phenyl, pyridyl, pyridazinyl, pyrimidinyl or pyrazinyl,
• each of which is optionally substituted by 1 to 4 substituents selected from the group consisting of halogen, CN, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy;
• including their agriculturally acceptable salts or derivatives, provided the compounds of formula (I) have a carboxyl group.