(US5801120) What is claimed is: 1. A compound having the formula I (Chemical Structure image '13' not included in text) wherein, Ar is selected from the groups (Chemical Structure image '14' not included in text) X is oxygen, sulfur or C1-4 alkylene; each of R1, R2, R3, R4, R9 and R10 is, independently, hydrogen, C1-8 alkyl or COOR16 ; R5 is C1-8 -alkyl, optionally substituted with one to six halogen atoms; C1-8 alkoxy, optionally substituted with one to six halogen atoms; C1-8 alkylcarbonyl; C1-8 alkoxycarbonyl; NR13 R14 ; On S(O)n,R12 ; NR15 SO2 R12 ; halogen; cyano; or nitro; each of R6 and R7 is independently hydrogen or selected from the values of R5 ; or R6 and R7 together form the group --Y--W--Z--; R8 is hydrogen, C1-8 alkyl, optionally substituted C1-8 alkylcarbonyl, optionally substituted C1-8 alkoxycarbonyl, C(O)NR13 R14, C1-8 alkylsulfonyl, P(O)--((OR11)2, R13 P(O)OR11 or optionally substituted benzoyl or a salt forming moiety; R11 is C1-8 alkyl; R12 is C1-8 alkyl, optionally substituted with one to six halogen atoms; each of R13, R14, R15 and R16 is, independently, hydrogen or C1-8 alkyl; each of R17 and R18 is independently hydrogen, halogen, or C1-8 alkyl optionally substituted with one to six halogen atoms; or R17 and R18 together form an oxo group; each of R19 and R20 is, independently, hydrogen, halogen, or C1-8 alkyl optionally substituted with one to six halogen atoms; W is --(CR17 R18)t --(CR19 R20)t,-- or SO2 ; each of Y and Z is independently oxygen, sulfur, SO2, C.dbd.O or CR15 R16 ; with the proviso that Y and Z are attached to adjacent carbons; n is zero or one; n' is zero, one or two; q is zero, one or two; t is one or two; and t' is zero or one. 14. A method for selectively controlling weeds in rice which comprises applying to the weeds or their locus a herbicidally effective amount of a compound according to claim 1. 2. A compound according to claim 1 wherein R8 is hydrogen, C1-8 alkyl, C1-8 alkylcarbonyl, C1-8 alkoxycarbonyl, C(O)NR13 R14, C1-8 alkylsulfonyl, P(O)--(OR11)2, R13 P(O)OR11 or benzoyl. 3. A compound according to claim 1 wherein R8 is optionally substituted C1-8 alkylcarbonyl, optionally substituted C1-8 alkoxycarbonyl or optionally substituted benzoyl or is an ammonium salt derived from an amine of formula X (Chemical Structure image '15' not included in text) wherein each of R21, R22 and R23 represents independently hydrogen, C1-16 alkyl optionally substituted by one or more hydroxy groups, C2-4 alkenyl or R21 and R22 form together a C2-5 alkylene group which may optionally be interrupted by oxygen. 4. A compound according to claim 1 wherein Ar is the group (Chemical Structure image '16' not included in text) 5. A compound according to claim 4 wherein X is oxygen or C1-3 alkyl, q is one, and each of R1, R2, R3, R4, R9 and R10 is independently hydrogen or C1-4 alkyl. 6. A compound according to claim 5 wherein R5 is C1-4 alkyl optionally substituted with one to three halogen atoms, --(O)n --S(O)n,C1-4 alkyl, halogen, or nitro. 7. A compound according to claim 6 wherein R5 is methyl, CF3, bromo, chloro, nitro or OSO2 CH3 and R8 is hydrogen, C1-4 alkyl, C4-8 alkylcarbonyl or benzoyl. 8. A compound according to claim 7 wherein R6 is in the 3-position and is hydrogen, methoxy, chloro or OSO2 CH3, and R7 is in the 4-position and is methoxy, CF3, bromo, chloro, nitro, OSO2 R12 or NHSO2 R12 where R12 is methyl, CH2 Cl or CF3. 9. A compound according to claim 8 wherein X is oxygen or methylene, and each of R1, R2, R3, R4, R9 and R10 is independently hydrogen, methyl or ethyl. 10. A compound according to claim 4 wherein X is CH2, q is 1 or 2, R9 and R10 are hydrogen, R5 is nitro or chloro, R6 is hydrogen and R7 is fluoro, chloro, bromo, S--C1-4 alkyl, SO2 --C1-4 alkyl, OSO2 --C1-4 alkyl. 11. A compound according to claim 10 wherein R8 is hydrogen. 12. An agricultural composition comprising an effective amount of a compound according to claim 1 together with an agriculturally acceptable carrier. 13. A method for the control of weeds which comprises applying to the weed or its locus an herbicidally effective amount of a compound according to claim 1. 15. A compound according to claim 2 wherein R8 is other than hydrogen or a salt forming moiety. 16. A compound according to claim 2 wherein R7 is R12 SO2 O. 17. A compound according to claim 2 wherein R6 +R7 is a methylene dioxy group. 18. A compound according to claim 2 wherein q is 2. 19. A compound according to claim 4 wherein X is CH2 R1, R2, R3 and R4 are hydrogen R5 is methyl, CF3, C1-3 alkylsulfonyl, C1-3 alkylsulfonoxy, chloro, bromo or nitro R6 is hydrogen or together with R7 methylenedioxy R7 is chloro, fluoro, bromo, C1-4 alkylthio, C1-3 alkylsulfonyl or C1-3 alkylsulfonyloxy, or together with R6 methylenedioxy R9 and R10 are independently hydrogen or C1-3 alkyl q is one or two. 20. A compound according to claim 19 wherein R8 is hydrogen or a salt forming moiety. 21. A compound according to claim 19 wherein R8 is other than hydrogen or a salt forming moiety. 22. A compound according to claim 4 wherein R1, R2, R3, R4, R6, R8 and R9 are hydrogen, R5 is nitro, R7 is 4-chloro, R10 is hydrogen or methyl and X is CH2 or C(CH3)2. 23. An agricultural composition comprising an effective amount of a compound according to claim 2 together with an agriculturally acceptable carrier. 24. A herbicidal composition comprising a herbicidally active 3-(substituted benzoyl)-3:2:1-bicyclooctan-2,4-dione or a salt thereof and an inert carrier. 25. A herbicidal composition comprising a herbicidally active compound according to claim 2 and an inert carrier therefor. 26. A herbicidal composition comprising a herbicidally active compound according to claim 22 and an inert carrier therefor. 27. A method for the control of weeds which comprises applying to the weed or its locus a herbicidally effective amount of a compound of formula I according to claim 2. 28. The method of controlling undesirable vegetation comprising applying to the area where control is desired a herbicidally effective amount of a compound according to claim 2. 29. The method of controlling undesirable vegetation comprising applying to the area where control is desired a herbicidally effective amount of a compound according to claim 22. 30. The method of controlling undesirable vegetation comprising applying to the area where control is desired, a herbicidal composition comprising a herbicidally active 3-(substituted benzoyl)-3:2:1-bicyclooctan-2,4-dione or its salt and an inert carrier therefor. 31. The method of controlling undesirable vegetation comprising applying to the area where control is desired, a herbicidal composition comprising a herbicidally active compound according to claim 2. 32. The method of controlling undesirable vegetation comprising applying to the area where control is desired, a herbicidal composition comprising a herbicidally active compound according to claim 22. 33. A compound according to claim 1 wherein Ar represents the group (Chemical Structure image '17' not included in text) X is CH2 CH2 ; q is zero; each of R1, R2, R9 and R10 is, independently, hydrogen or C1-4 alkyl; R5 is halogen; C1-4 alkyl optionally substituted by 1 to 6 halogen atoms; C1-4 alkoxy optionally substituted by 1 to 6 halogen atoms; nitro; cyano; or OnS(O)n,R12 ; each of R6 and R7 is independently hydrogen; halogen; C1-4 alkyl optionally substituted by 1 to 6 halogen atoms, C1-4 alkoxy optionally substituted by 1 to 6 halogen atoms; cyano; nitro; OnS(O)n,R12 ; NR13 R14 ; (C1-4 alkyl) carbonyl; or (C1-4 alkoxy)carbonyl; R8 is hydrogen or a salt forming moiety; R12 is C1-4 alkyl optionally substituted by 1 to 6 halogen atoms; each of R13 and R14 is, independently, hydrogen or C1-4 alkyl; n is zero or one; and n' is zero, one or two. 34. A compound according to claim 33 wherein each of R1, R2, R9 and R10 is, independently, hydrogen or methyl; and R5 is chlorine, bromine, methyl, methoxy, nitro, trifluoromethyl or methyl sulfonyl. 35. A compound according to claim 34 wherein each R6 and R7 is independently hydrogen; chlorine; fluorine; bromine; methyl; C1-4 alkoxy; trifluoromethoxy; cyano; nitro; trifluoromethyl; OnS(O)n,R12, wherein n is zero, n' is 0 or 2 and R12 is methyl, chloromethyl, trifluoromethyl; ethyl or n-propyl, (C1-4 alkyl)carbonyl and R6 is in the 3-position and R7 is in the 4-position. 36. A compound according to claim 34 wherein R6 is hydrogen and R7 is hydrogen, chlorine, bromine, fluorine, cyano, trifluoromethyl or OnS(O)n,R12 wherein n is zero, n' is 2 and R12 is C1-4 alkyl optionally substituted by 1 to 6 halogen atoms. 37. The method of controlling undesirable vegetation comprising applying to the area where control is desired, an herbicidally effective amount of a compound according to claim 2 wherein Ar represents the group (Chemical Structure image '18' not included in text) X is CH2 CH2 ; q is zero; each of R1, R2, R9 and R10 is, independently, hydrogen or C1-4 alkyl; R5 is halogen; C1-4 alkyl optionally substituted by 1 to 6 halogen atoms; C1-4 alkoxy optionally substituted by 1 to 6 halogen atoms; nitro; cyano; or OnS(O)n,R12 ; each of R6 and R7 is independently hydrogen; halogen; C1-4 alkyl optionally substituted by 1 to 6 halogen atoms; C1-4 alkoxy optionally substituted by 1 to 6 halogen atoms; cyano; nitro; OnS(O)n,R12 ; NR13 R14 ; (C1-4 alkyl) carbonyl; or (C1-4 alkoxy)carbonyl; R8 is hydrogen or a salt forming moiety; R12 is C1-4 alkyl optionally substituted by 1 to 6 halogen atoms; each of R13 and R14 is, independently, hydrogen or C1-4 alkyl; n is zero or one; and n' is zero, one or two. 38. The method according to claim 37 wherein each of R1, R2, R9 and R10 is, independently, hydrogen or methyl; and R5 is chlorine, bromine, methyl, methoxy, nitro, trifluoromethyl or methyl sulfonyl. 39. The method according to claim 38 wherein each R6 and R7 is independently hydrogen; chlorine; fluorine; bromine; methyl; C1-4 alkoxy; trifluoromethoxy; cyano; nitro; trifluoromethyl; OnS(O)n,R12 wherein n is zero, n' is 0 or 2 and R12 is methyl, chloromethyl, trifluoromethyl; ethyl or n-propyl, (C1-4 alkyl)carbonyl and R6 is in the 3-position and R7 is in the 4-position. 40. The method according to claim 38 wherein R6 is hydrogen and R7 is hydrogen, chlorine, bromine, fluorine, cyano, trifluoromethyl or OnS(O)n,R12 wherein n is zero, n' is 2 and R12 is C1-4 alkyl optionally substituted by 1 to 6 halogen atoms. 41. The herbicidal composition of claim 24 wherein Ar represents the group (Chemical Structure image '19' not included in text) X is CH2 CH2 ; q is zero; each of R1, R2, R9 and R10 is, independently, hydrogen or C1-4 alkyl; R5 is halogen; C1-4 alkyl optionally substituted by 1 to 6 halogen atoms; C1-4 alkoxy optionally substituted by 1 to 6 halogen atoms; nitro; cyano; OnS(O)n R12 ; each of R6 and R7 is independently hydrogen; halogen; C1-4 alkyl optionally substituted by 1 to 6 halogen atoms, C1-4 alkoxy optionally substituted by 1 to 6 halogen atoms; cyano; nitro; OnS(O)n,R12 ; NR13 R14 ; (C1-4 alkyl) carbonyl; or (C1-4 alkoxy)carbonyl; R8 is hydrogen or a salt forming moiety; R12 is C1-4 alkyl optionally substituted by 1 to 6 halogen atoms; each of R13 and R14 is, independently, hydrogen or C1-4 alkyl; n is zero or one; and n' is zero, one or two. 42. The herbicidal composition of claim 41 wherein each of R1, R2, R9 and R10 is, independently, hydrogen or methyl; and R5 is chlorine, bromine, methyl, methoxy, nitro, trifluoromethyl or methyl sulfonyl. 43. The herbicidal composition of claim 42 wherein each R6 and R7 is independently hydrogen; chlorine; fluorine; bromine; methyl; C1-4 alkoxy; trifluoromethoxy; cyano; nitro; trifluoromethyl; OnS(O)n,R12, wherein n is zero, n' is 0 or 2 and R12 is methyl, chloromethyl, trifluoromethyl; ethyl or n-propyl, (C1-4 alkyl)carbonyl and R6 is in the 3-position and R7 is in the 4-position. 44. The herbicidal composition of claim 43 wherein R6 is hydrogen and R7 is hydrogen, chlorine, bromine, fluorine, cyano, trifluoromethyl or OnS(O)n,R12 wherein n is zero, n' is 2 and R12 is C1-4 alkyl optionally substituted by 1 to 6 halogen atoms.
最新评论
暂无评论。