Substituted pyridazinones as herbicides

A compound of formula (I)

• or a salt or N-oxide thereof, wherein
• R1 is selected from the group consisting of C1-C4alkyl, C3-C6cycloalkyl, C3-C6alkoxy, C1-C2alkoxy-C1-C2alkyl-, C2-C4alkenyl, C1-C4haloalkyl, cyano-C1-C4alkyl, C2-C4haloalkenyl, C2-C4alkynyl and C2-C4haloalkynyl;
• R2 is selected from the group consisting of hydrogen, halogen, cyano, C1-C6alkyl, C1-C6haloalkyl, C1-C6haloalkoxy, C1-C3haloalkoxy-C1-C3alkyl-, C1-C6alkoxy, C1-C3alkoxy-C1-C3alkyl-, C1-C3alkoxy-C1-C3alkoxy-C1-C3alkyl-, C3-C6cycloalkyl, C2-C6alkenyl, C2-C6 haloalkenyl, C2-C6alkynyl, C1-C6hydroxyalkyl-, C1-C6alkylcarbonyl-, —S(O)mC1-C6alkyl, amino, C1-C6alkylamino, C1-C6dialkylamino, —C(C1-C3alkyl)=N—O—C1-C3alkyl and C2-C6 haloalkynyl;
• G is hydrogen, or C(O)R3;
• R3 is selected from the group consisting of C1-C6alkyl, C2-C6alkenyl, C2-C6alkynyl, C1-C6alkyl-S—, C1-C6alkoxy, —NR4R5 and phenyl optionally substituted by one or more R6;
• each R4 and R5 are independently selected from the group consisting of hydrogen, C1-C6 alkyl, C1-C6 alkoxy, and C3-C6cycloalkyl, or R4 and R5 together can form a morpholinyl ring;
• and,
• R6 is selected from the group consisting of halogen, cyano, nitro, C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy and C1-C3haloalkoxy;
• X and Y are each independently hydrogen, C1-C3alkyl, cyclopropyl, C1-C3alkoxy, C1-C3haloalkyl, C1-C3haloalkoxy, or halogen;
• D is either a substituted or unsubstituted naphthalene ring system, or a substituted or unsubstituted 8-10 membered bicyclic saturated, partially saturated or unsaturated, heterocyclic ring system containing 1, 2, 3, or 4 heteroatoms independently selected from oxygen, nitrogen and sulphur, and wherein when D is substituted it is substituted on at least one ring carbon atom with R8 and/or on at least one ring nitrogen atom by R9;
• each R8 is independently oxygen, hydroxyl, halogen, cyano, C1-C6alkyl, C1-C6haloalkyl, C3-C6-cycloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, C1-C3alkoxy-C1-C3alkyl, C1-C3haloalkoxy-C1-C3alkyl-, C1-C3alkoxy-C1-C3alkoxy-C1-C3alkyl-, C2-C6alkenyl, C2-C6haloalkenyl, C2-C6alkynyl, C2-C6haloalkynyl, C1-C6hydroxyalkyl-, C1-C6alkylcarbonyl-, C1-C6haloalkylcarbonyl-, C3-C6cycloalkylcarbonyl-, C1-C6alkyl-S(O)m—, —S(O)m—C1-C6haloalkyl, —S(O)m—C3-C6cycloalkyl, —O—S(O)2C1-C3alkyl, —C1-C3alkyl-S(O)m—C1-C6alkyl, —C1-C3alkyl-S(O)m—C1-C6haloalkyl, —C1-C3alkyl-S(O)m—C3-C6cycloalkyl, cyano-C1-C6-alkyl-, —NR4R5, —C(C1-C3alkyl)=N—O—C1-C3alkyl, —C(S)NH2, C1-C6alkylaminothiocarbonyl-, di(C1-C6alkyl)aminothiocarbonyl-, C3-C6-cycloalkylamino-thiocarbonyl-S(O)2NH2, —S(O)2NHC(O)C1-C3alkyl, C1-C6alkylaminosulfonyl-, di(C1-C6alkyl)aminosulfonyl-, C3-C6-cycloalkylamino-sulfonyl-, —C(O)OH, —C(O)OC1-C6alkyl, —C(O)NHS—(O)2C1-C6alkyl, —C(O)NR4R5, —NR4C(O)NR4R5, C1-C6alkylcarbonyl(C1-C6alkyl)amino-, C1-C6haloalkylcarbonylamino-, C1-C6haloalkylcarbonyl(C1-C6alkyl)amino-, C1-C6alkoxycarbonylamino-, C1-C6alkoxycarbonyl(C1-C6alkyl)amino-, C1-C6alkylsulfonylamino-, C1-C6alkylsulfonyl(C1-C6alkyl)amino-, C1-C6haloalkylsulfonylamino-, C1-C6haloalkylsulfonyl(C1-C6alkyl)amino-, C3-C6cycloalkylsulfonylamino-, C3-C6cycloalkylsulfonyl(C1-C6alkyl)amino-, C1-C6alkylaminocarbonylamino-, C1-C6alkylaminocarbonyl(C1-C6alkyl)amino, di(C1-C6alkyl)aminocarbonylamino-, C1-C6haloalkylaminocarbonylamino-, C1-C6haloalkylamino-carbonyl(C1-C6alkyl)amino, di(C1-C6haloalkyl)aminocarbonylamino-, di(C1-C6haloalkyl)amino-carbonyl(C1-C6alkyl)amino-, hydroxyamino-, hydroxy(C1-C6alkyl)amino, C1-C6alkoxyamino, C1-C6alkoxy(C1-C6alkyl)amino, C1-C6haloalkoxyamino, C1-C6haloalkoxy(C1-C6alkyl)amino;
• or a ring system selected from the group consisting:
• of a phenyl ring, a 5-6-membered heteroaryl ring and a 3-6-membered heterocyclyl ring, wherein said ring system is substituted by 0 to 5 R16;
• m is an integer of 0, 1, or 2;
• each R9 is independently C1-C6alkyl, C1-C6haloalkyl, hydroxyl, C1-C4alkoxy, C1-C4alkylthio, C3-C6-cycloalkyl, C1-C3alkoxy-C1-C3alkyl, C1-C3haloalkoxy-C1-C3alkyl-, C1-C3alkoxy-C1-C3alkoxy-C1-C3alkyl-, C1-C6hydroxyalkyl-, —C1-C3alkyl-S(O)m—C1-C6alkyl, —C1-C3alkyl-S(O)m—C1-C6haloalkyl, —C1-C3alkyl-S(O)m—C3-C6cycloalkyl, cyano-C1-C6-alkyl-, or a ring system selected from the group consisting of:
• a phenyl ring, a 5-6-membered heteroaryl ring and a 3-6-membered heterocyclyl ring, wherein said ring system is substituted by 0 to 5 R16;
• each R16 is independently halogen, cyano, C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy or C1-C6haloalkoxy;
• and,
• W is
• wherein
• “a” denotes the point of attachment to the phenyl-pyridazinone/phenyl-pyridazine dione moiety,
• “b” denotes the point of attachment to ring D,
• R10, R12, R14 and R15 are each independently hydrogen, C1-C3alkyl, or C1-C3haloalkyl;
• or R10 and R12 together with the carbon atoms to which they are joined form a C3-C6 carbocyclic ring;
• and
• R11 and R13 are each independently hydrogen, halogen, C1-C3alkyl, or C1-C3haloalkyl, provided that when one of R11 or R13 is halogen, C1-C3alkyl or C1-C3 haloalkyl, the other is hydrogen.