Cyclohexane - 1,3 - dionas, 2 - (3 - chloro - 5 - trifluormet IL - piridin - 2 - I - L - carbonyl) - cyclohex - 1 - en - 1 - ol - 3-one or 2 - (3 - chloro - 5 - methylsulphonyl - piridin - 2 - IL - carbonyl) - cyclohex - 1 - en - 1 - ol - 3-one,Process for the preparation of these ciclohexanodionas, their salts, compounds and esters of the acid piridin - 2 - carboxilico compounds, process for their preparation, derivatives of the acid picolinico,Herbicide composition, process for its preparation, application, and process for combating unwanted plant growth and seed.

摘要

The invention relates to novel herbicidally active cyclohexanediones of formula I or I' IMAGE +TR IMAGE in which R1 and R2 independently of one another are each hydrogen; halogen; nitro; cyano; C1-C4alkyl; C1-C4alkoxy; C1-C4alkyl-S(O)n-; COR8; C1-C4haloalkoxy; or C1-C4haloalkyl; R3, R4 and R5 independently of one another are each hydrogen; C1-C4alkyl; or phenyl or benzyl each unsubstituted or substituted by up to three identical or different substituents from halogen, nitro, cyano, C1-C4alkyl, C1-C4alkoxy, C1-C4alkyl-S(O)n-, C1-C4haloalkyl, C1-C4haloalkyl-S(O)n- and C1-C4haloalkoxy; R6 is hydrogen; C1-C4alkyl, C1-C4alkoxycarbonyl; or cyano; R7 is OH; or O(-)M(+); R8 is OH; C1-C4alkoxy; NH2; C1-C4alkylamino; or di-C1- C4alkylamino; n is 0, 1 or 2; M+ is a cation equivalent of a metal ion or of an ammonium ion that is unsubstituted or substituted by up to three C1-C4alkyl, C1-C4hydroxyalkyl or C1-C4alkoxy-C1-C4alkyl groups, to herbicidal compositions, to processes for the preparation of novel compounds and to novel intermediates and the preparation thereof.