Novel herbicides

A compound of formula I

• wherein
• Y is oxygen, NR4a, sulfur, sulfonyl, sulfinyl, C(O), C(═NR4b), C(═CR6aR6b) or a C1-C4alkylene or C2-C4alkenylene chain, which may be interrupted by oxygen, NR5a, sulfur, sulfonyl, sulfinyl, C(O) or C(═NR5b) and/or mono- or poly-substituted by R6;
• A1 is nitrogen or CR7;
• A2 is nitrogen or CR8;
• R1, R2, R6, R7 and R8 are each independently of the others hydrogen, hydroxy, mercapto, NO2, cyano, halogen, formyl, oxyiminomethylene, C1-C6alkoxyiminomethylene, C1-C6alkyl, C1-C6haloalkyl, C2-C6alkenyl, C2-C6haloalkenyl, C2-C6alkynyl, C2-C6haloalkynyl, C1-C6alkoxy, C1-C6haloalkoxy, C3-C6alkenyloxy, C3-C6alkynyloxy, C3-C6oxacycloalkyl, C3-C6thiacycloalkyl, C3-C6dioxacycloalkyl, C3-C6dithiacycloalkyl, C3-C6oxathiacycloalkyl, C1-C6alkoxycarbonyl, C1-C6alkylcarbonyl, C1-C6alkoxycarbonyloxy, C1-C6alkylcarbonyloxy, C1-C6alkylthio, C1-C6-alkylsulfonyl, C1-C6alkylsulfinyl, NR9R10, C3-C6cycloalkyl, tri(C1-C6alkyl)silyl, di(C1-C6alkyl)-phenylsilyl, tri(C1-C6alkyl)silyloxy, di(C1-C6alkyl)phenylsilyloxy or Ar1;
• or R1, R2, R6, R7, R8 are each independently of the others a C1-C6alkyl, C2-C6alkenyl, C2-C6alkynyl or C3-C6cycloalkyl group, which may be interrupted by oxygen, sulfur, sulfonyl, sulfinyl, —NR11— or —C(O)— and/or mono-, di- or tri-substituted by hydroxy, mercapto, NO2, cyano, halogen, formyl, C1-C6alkoxy, C3-C6alkenyloxy, C3-C6alkynyloxy, C1-C6haloalkoxy, C1-C2alkoxy-C1-C2alkoxy, C1-C4alkoxycarbonyloxy, C1-C4alkylcarbonyloxy, C1-C4alkoxycarbonyl, C1-C4alkylcarbonyl, C1-C6alkylthio, C1-C6alkylsulfinyl, C1-C6alkylsulfonyl, NR12R13, C1-C6alkyl, C2-C6alkenyl, C2-C6alkynyl, C3-C6cycloalkyl, tri(C1-C6alkyl)silyl, tri(C1-C6alkyl)silyloxy or Ar2;
• or two substituents R6 at the same carbon atom together form a —CH2O— or a C2-C5alkylene chain, which may be interrupted once or twice by oxygen, sulfur, sulfinyl or sulfonyl and/or mono- or poly-substituted by R6c, with the proviso that two hetero atoms may not be located next to one another;
• or two substituents R6 at different carbon atoms together form an oxygen bridge or a C1-C4alkylene chain, which may in turn be substituted by R6c;
• or R7 and R8 together form a —CH2CH═CH—, —OCH═CH— or —CH═CH—CH═CH— bridge or a C3-C4alkylene chain, which may be interrupted by oxygen or —S(O)n1— and/or mono- or poly-substituted by R6d;
• R3 is hydroxy, halogen, mercapto, C1-C8alkylthio, C1-C8alkylsulfinyl, C1-C8alkylsulfonyl, C1-C8haloalkylthio, C1-C8haloalkylsulfinyl, C1-C8haloalkylsulfonyl, C1-C4alkoxy-C1-C4alkylthio, C1-C4alkoxy-C1-C4alkylsulfinyl, C1-C4alkoxy-C1-C4alkylsulfonyl, C3-C8alkenylthio, C3-C8-alkynylthio, C1-C4alkylthio-C1-C4alkylthio, C3-C4alkenylthio-C1-C4alkylthio, C1-C4alkoxycarbonyl-C1-C4alkylthio, C1-C4alkoxycarbonyl-C1-C4alkylsulfinyl, C1-C4alkoxycarbonyl-C1-C4alkylsulfonyl, C3-C8cycloalkylthio, C3-C8cycloalkylsulfinyl, C3-C8cycloalkylsulfonyl, phenyl-C1-C4alkylthio, phenyl-C1-C4alkylsulfinyl, phenyl-C1-C4alkylsulfonyl, S(O)n1—Ar3, phenylthio, phenylsulfinyl, phenylsulfonyl, it being possible for the phenyl-containing groups to be substituted by one or more C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy, C1-C3haloalkoxy, C1-C4alkoxycarbonyl, halogen, cyano, hydroxy or nitro groups;
• or R3 is O−M+, wherein M+ is an alkali metal cation or an ammonium cation;
• Q is a radical
• p1, p2 and p3 are 0 or 1;
• m1, m2 and m3 are 1, 2 or 3;
• X1, X2 and X3 are hydroxy, halogen, C1-C6alkyl, C1-C6haloalkyl, C2-C6alkenyl, C2-C6haloalkenyl, C2-C6alkynyl, C2-C6haloalkynyl, C1-C6alkoxy, C1-C6haloalkoxy, C1-C6alkylthio, C1-C6alkylsulfinyl, C1-C6alkylsulfonyl, C1-C6haloalkylthio, C1-C6haloalkylsulfinyl or C1-C6haloalkylsulfonyl;
• Z1, Z2 and Z3 are C1-C6alkyl which is substituted by the following substituents:
• C3-C4cycloalkyl or C3-C4cycloalkyl substituted by halogen, C1-C6alkyl, C1-C3alkoxy or C1-C3alkoxy-C1-C3alkyl;
• oxiranyl or oxiranyl substituted by C1-C6alkyl or C1-C3alkoxy-C1-C3alkyl;
• 3-oxetanyl or 3-oxetanyl substituted by C1-C6alkyl, C1-C3alkoxy or C1-C3alkoxy-C1-C3alkyl;
• 3-oxetanyloxy or 3-oxetanyloxy substituted by C1-C6alkyl, C1-C3alkoxy or C1-C3alkoxy-C1-C3-alkyl;
• C3-C6cycloalkyloxy or C3-C4cycloalkyloxy substituted by halogen, C1-C6alkyl, C1-C3-alkoxy or C1-C3alkoxy-C1-C3alkyl;
• C1-C6haloalkoxy;
• C1-C6alkylsulfonyloxy;
• C1-C6haloalkylsulfonyloxy;
• phenylsulfonyloxy;
• benzylsulfonyloxy, benzoyloxy;
• phenoxy;
• phenylthio;
• phenyl-sulfinyl;
• phenylsulfonyl;
• Ar10;
• OAr12;
• tri(C1-C6alkyl)silyl or tri(C1-C6alkyl)silyloxy, it being possible for the phenyl-containing groups to be mono- or poly-substituted by C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy, C1-C3haloalkoxy, halogen, cyano, hydroxy or nitro;
• or Z1, Z2 and Z3 are 3-oxetanyl;
• 3-oxetanyl substituted by C1-C3alkoxy, C1-C3alkoxy-C1-C3alkyl or C1-C6alkyl;
• C3-C6cycloalkyl substituted by halogen, C1-C3alkyl or C1-C3alkoxy-C1-C3alkyl;
• tri(C1-C6alkyl)silyl;
• tri(C1-C6alkyl)silyloxy or CH═P(phenyl)3;
• or Z1, Z2 and Z3 are a C1-C6alkyl, C2-C6alkenyl or C2-C6alkynyl group, which is interrupted by oxygen, —O(CO)—, —(CO)O—, —O(CO)O—, —N(R14)O—, —ONR15—, sulfur, sulfinyl, sulfonyl, —SO2NR16—, —NR17SO2— or —NR18— and is mono- or poly-substituted by L1;
• it also being possible for L1 to be bonded at the terminal carbon atom of the C1-C6alkyl, C2-C6alkenyl or C2-C6alkynyl group;
• or Z1, Z2 and Z3 are hydrogen, hydroxy, mercapto, NO2, cyano, halogen, formyl, C1-C6alkyl, C1-C6haloalkyl, C2-C6alkenyl, C2-C6haloalkenyl, C2-C6alkynyl, C2-C6haloalkynyl, C1-C6alkoxy, C1-C6haloalkoxy, C1-C6alkoxycarbonyl, C1-C6alkylcarbonyl, C1-C6alkylthio, C1-C6alkylsulfonyl, C1-C6alkylsulfinyl, NR22R23, phenyl which may be mono- or poly-substituted by C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy, C1-C3haloalkoxy, halogen, cyano, hydroxy or nitro, C3-C6cycloalkyl, C5-C6cycloalkyl substituted by C1-C3alkoxy, C1-C3alkoxy-C1-C3alkyl or C1-C6alkyl, or Ar5, O—Ar6, N(R24)Ar7 or S(O)n6Ar8;
• L1 is hydrogen, halogen, hydroxy, amino, formyl, nitro, cyano, mercapto, carbamoyl, P(O)(OC1—C6alkyl)2, C1-C6alkoxy, C1-C6haloalkoxy, C1-C6alkoxycarbonyl, C2-C6alkenyl, C2-C6haloalkenyl, C2-C6alkynyl, C2-C6haloalkynyl, C3-C6cycloalkyl, halo-substituted C3-C6cycloalkyl, C3-C6alkenyloxy, C3-C6alkynyloxy, C3-C6haloalkenyloxy, cyano-C1-C6alkoxy, C1-C6alkoxy-C1-C6alkoxy, C1-C6alkylthio-C1-C6alkoxy, C1-C6alkylsulfinyl-C1-C6alkoxy, C1-C6-alkylsulfonyl-C1-C6alkoxy, C1-C6alkoxycarbonyl-C1-C6alkoxy, C1-C6alkylcarbonyloxy-C1-C6-alkylcarbonyl, C1-C6alkylthio, C1-C6alkylsulfinyl, C1-C6alkylsulfonyl, C1-C6haloalkylthio, C1-C6haloalkylsulfinyl, C1-C6haloalkylsulfonyl or oxiranyl, which may in turn be substituted by C1-C6alkyl, C1-C3alkoxy or C1-C3alkoxy-C1-C3alkyl, or (3-oxetanyl)-oxy, which may in turn be substituted by C1-C6alkyl, C1-C3alkoxy or C1-C3alkoxy-C1-C3alkyl, or benzoyloxy, benzyloxy, benzylthio, benzylsulfinyl, benzylsulfonyl, C1-C6alkylamino, di(C1-C6alkyl)amino, R19S(O)2O—, R20N(R21)SO2—, rhodano, phenyl, phenoxy, phenylthio, phenylsulfinyl, phenylsulfonyl, Ar4 or OAr11, it being possible for the phenyl-containing groups in turn to be substituted by one or more C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy, C1-C3haloalkoxy, halogen, cyano, hydroxy or nitro groups;
• R4a and R5a are each independently of the other hydrogen, C1-C6alkyl, C1-C6haloalkyl, cyano, formyl, C1-C6alkylcarbonyl, C1-C6alkoxycarbonyl, carbamoyl, C1-C6alkylaminocarbonyl, di(C1-C6alkylamino)carbonyl, di(C1-C6alkylamino)sulfonyl, C3-C6cycloalkylcarbonyl, C1-C6-alkylsulfonyl, phenylcarbonyl, phenylaminocarbonyl or phenylsulfonyl, it being possible for the phenyl groups to be mono- or poly-substituted by C1-C6alkyl, C1-C6haloalkyl, C1-C6-alkoxy, C1-C6haloalkoxy, halogen, cyano, hydroxy or nitro;
• R4b and R5b are each independently of the other hydroxy, C1-C6alkoxy, C3-C6alkenyloxy, C3-C6alkynyloxy or benzyloxy, it being possible for the benzyl group to be mono- or poly-substituted by C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, halogen, cyano, hydroxy or nitro;
• R9, R11, R13, R16, R17, R18, R20, R23 and R24 are each independently of the others hydrogen, C1-C6alkyl, Ar9, C1-C6haloalkyl, C1-C6alkylcarbonyl, C1-C6alkoxycarbonyl, C1-C6alkylsulfonyl, phenyl, it being possible for the phenyl group in turn to be mono- or poly-substituted by C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, halogen, cyano, hydroxy or nitro;
• R6a is hydrogen, C1-C6alkyl or C1-C6alkylcarbonyl;
• or together with R6b is a C2-C5alkylene chain;
• R6b, R6d, R10, R12 and R22 are each independently of the others hydrogen or C1-C6alkyl;
• R6c, R14, R15, R19 and R21, are each independently of the others C1-C6alkyl or C1-C6haloalkyl;
• Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, Ar7, Ar8, Ar9, Ar10, Ar11 and Ar12 are each independently of the others a five- to ten-membered, monocyclic or fused bicyclic ring system, which may be aromatic, partially saturated or fully saturated and may contain from 1 to 4 hetero atoms selected from nitrogen, oxygen, sulfur, C(O) and C(═NR25), and each ring system may contain not more than two oxygen atoms, not more than two sulfur atoms, not more than two C(O) groups and not more than one C(═NR25) group, and each ring system may itself be mono- or poly-substituted by C1-C6alkyl, C1-C6haloalkyl, C2-C6alkenyl, C2-C6haloalkenyl, C2-C6alkynyl, C2-C6haloalkynyl, C1-C6alkoxy, C1-C6haloalkoxy, C3-C6alkenyloxy, C3-C6alkynyloxy, mercapto, amino, hydroxy, C1-C6alkylthio, C1-C6haloalkylthio, C3-C6alkenylthio, C3-C6-haloalkenylthio, C3-C6alkynylthio, C1-C3alkoxy-C1-C3alkylthio, C1-C4alkylcarbonyl-C1-C3alkylthio, C1-C4alkoxycarbonyl-C1-C3alkylthio, cyano-C1-C3alkylthio, C1-C6alkylsulfinyl, C1-C6haloalkylsulfinyl, C1-C6alkylsulfonyl, C1-C6haloalkylsulfonyl, aminosulfonyl, C1-C2alkylaminosulfonyl, N,N-di(C1-C2alkyl)aminosulfonyl, di(C1-C4alkyl)amino, halogen, cyano, nitro or phenyl, it being possible for the phenyl group in turn to be substituted by hydroxy, C1-C6-alkylthio, C1-C6haloalkylthio, C3-C6alkenylthio, C3-C6haloalkenylthio, C3-C6alkynylthio, C1-C3alkoxy-C1-C3alkylthio, C1-C4alkylcarbonyl-C1-C3alkylthio, C1-C4alkoxycarbonyl-C1-C3-alkylthio, cyano-C1-C3alkylthio, C1-C6alkylsulfinyl, C1-C6haloalkylsulfinyl, C1-C6alkylsulfonyl, C1-C6haloalkylsulfonyl, aminosulfonyl, C1-C2alkylaminosulfonyl, N,N-di(C1-C2alkyl)aminosulfonyl, di(C1-C4alkyl)amino, halogen, cyano or nitro, and the substituents at the nitrogen atom in the heterocyclic ring being other than halogen, and two oxygen atoms not being located next to one another;
• R25 is hydrogen, hydroxy, C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy, C1-C6alkylcarbonyl, C1-C6alkoxycarbonyl or C1-C6alkylsulfonyl;
• and
• n1 is 0, 1 or 2;
• and n6 is 0, 1 or 2;
• or an agronomically acceptable salt/isomer/enantiomer/tautomer of such a compound.