Herbicidal benzoxazinones

1. A compound of formula I

wherein

R 1 is hydrogen or halogen;

R 2 is hydrogen, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 3 -C 6 -cycloalkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -haloalkenyl, C 3 -C 6 -alkynyl, C 3 -C 6 -haloalkynyl, C 1 -C 6 -alkoxy or C 3 -C 6 -cycloalkyl-C 1 -C 6 -alkyl;

R 3 is halogen;

R 4 is halogen;

X is O or S; and

Y is a substituent selected from the group consisting of Y 1 to Y 66 :

wherein

A 1 to A 10 are oxygen or sulfur;

A 11 is oxygen, sulphur, SO or SO 2 ;

A 12 to A 17 are oxygen or sulfur;

R 5 , R 6 , R 7 , R 8 , R 23 , R 24 , R 29 , R 30 , R 37 , R 38 , R 39 , R 43 , R 44 , R 56 and R 58

are hydrogen, hydroxy, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 3 -C 7 -cycloalkyl, C 3 -C 7 -cycloalkyloxy, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 2 -C 6 -alkenyl, C 2 -C 6 -haloalkenyl, C 2 -C 6 -alkenyloxy, C 3 -C 6 -alkynyl, C 3 -C 6 -alkynyloxy, C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, C 1 -C 6 -alkoxysulfonyl, C 1 -C 6 -alkylsulfonyloxy, amino, C 1 -C 6 -alkylamino or di(C 1 -C 6 -alkyl)amino; or

R 5 and R 6 , R 7 and R 8 , R 23 and R 24 or R 29 and R 30 , 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 C 1 -C 6 -alkyl and C 1 -C 6 -alkoxy;

R 9 , R 10 , R 11 , R 12 , R 16 , R 17 , R 20 , R 21 , R 25 , R 26 , R 27 , R 28 , R 33 , R 34 , R 40 , R 45 , R 46 , R 50 , R 51 , R 53 and R 55 are hydrogen, cyano, hydroxy, C 1 -C 6 -alkyl, C 1 -C 6 -cyanoalkyl, C 1 -C 6 -haloalkyl, C 3 -C 7 -cycloalkyl, C 3 -C 7 -cycloalkyloxy, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 2 -C 6 -alkenyl, C 2 -C 6 -haloalkenyl, C 2 -C 6 -alkenyloxy, C 3 -C 6 -alkynyl, C 3 -C 6 -alkynyloxy, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, phenyl-C 1 -C 6 -alkyl, amino, C 1 -C 6 -alkylamino or di(C 1 -C 6 -alkyl)amino; or

R 11 and R 12 , R 16 and R 17 , R 25 and R 26 , R 27 and R 28 , or R 33 and R 34 , 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 C 1 -C 6 -alkyl and C 1 -C 6 -alkoxy;

R 13 is hydrogen, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 2 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -haloalkoxy, amino, C 1 -C 6 -alkylamino or di(C 1 -C 6 -alkyl)amino;

R 14 , R 15 , R 18 , R 22 , R 31 and R 32

are hydrogen, halogen or C 1 -C 6 -alkyl;

R 19 , R 35 , R 36 , R 41 , R 42 , R 49 , R 52 , R 54 and R 57

are hydrogen, halogen, hydroxy, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 3 -C 7 -cycloalkyl, C 3 -C 7 -cycloalkyloxy, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -haloalkylthio, C 2 -C 6 -alkenyl, C 2 -C 6 -haloalkenyl, C 2 -C 6 -alkenyloxy, C 3 -C 6 -alkynyl or C 3 -C 6 -alkynyloxy; and

R 47 is hydrogen, NH 2 , C 1 -C 6 -alkyl or C 3 -C 6 -alkynyl;

R 59 is hydrogen, amino, nitro, cyano, carboxy, carbamoyl, thiocarmbamoyl, halogen, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 3 -C 7 -cycloalkyl, C 3 -C 7 -cyclo-alkyloxy, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -halo-alkylthio, C 2 -C 6 -alkenyl, C 2 -C 6 -haloalkenyl, C 2 -C 6 -alkenyloxy, C 3 -C 6 -alkynyl, C 3 -C 6 -alkynyloxy, C 1 -C 6 -alkoxycarbonyl, C 2 -C 6 -alkenylthio, C 3 -C 6 -alkynylthio, C 1 -C 6 -alkylamino, di(C 1 -C 6 -alkyl)amino or C 3 -C 7 -cycloalkyl-C 1 -C 3 -alkyl;

R 60 is hydrogen, hydroxyl, amino, cyano, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 3 -C 7 -cycloalkyl, C 3 -C 7 -cycloalkyloxy, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 2 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -alkoxycarbonyl, C 1 -C 6 -alkylamino, di(C 1 -C 6 -alkyl)amino, C 3 -C 7 -cycloalkyl-C 1 -C 3 -alkyl, phenyl or phenyl-C 1 -C 6 -alkyl;

wherein in case Y is Y 2 or Y 20 , R 3 and R 4 both are halogen;

or an agriculturally acceptable salt thereof.

2. The compound of claim 1 , wherein R 1 is halogen.

3. The compound of claim 1 , wherein R 2 is C 3 -C 6 -alkynyl or C 3 -C 6 -haloalkynyl.

4. The compound of claim 1 , wherein Y is Y 2 , Y 42 or Y 55 .

5. A herbicidal composition comprising a herbicidal active amount of a compound of claim 1 and at least one further active compound selected from the group of the herbicides B and/or safeners C.

6. The composition according to claim 5 comprising at least two further active compounds selected from the group of the herbicides B and/or safeners C.

7. The composition according to claim 6 further comprising at least one inert liquid and/or solid carrier and, if appropriate, at least one surface-active substance.

8. The composition of claim 6 wherein R 1 is halogen.

9. The composition of claim 6 wherein R 2 is C 3 -C 6 -alkynyl or C 3 -C 6 -haloalkynyl.

10. The composition of claim 6 wherein Y is Y 2 , Y 42 or Y 55 .

11. A herbicidal composition comprising a herbicidal active amount of a compound of claim 1 and at least one inert liquid and/or solid carrier and, if appropriate, at least one surface-active substance.

12. A process for the preparation of herbicidal active compositions, which comprises mixing a herbicidal active amount of a compound of claim 1 and at least one inert liquid and/or solid carrier and, if desired, at least one surface-active substance.

13. A method of controlling undesired vegetation, which comprises allowing a composition comprising a herbicidal active amount of a compound of claim 1 to act on plants, their environment or on seed.

14. The method of claim 13 , wherein the composition further comprises at least two further active compounds selected from the group of the herbicides B and/or safeners C.

15. The method of claim 14 , wherein the composition further comprises at least one inert liquid and/or solid carrier and, if appropriate, at least one surface-active substance.

16. The method of claim 15 , wherein R 1 is halogen.

17. The method of claim 15 , wherein R 2 is C 3 -C 6 -alkynyl or C 3 -C 6 -haloalkynyl.

18. The method of claim 15 , wherein Y is Y 2 , Y 42 or Y 55 .