Herbicidal cyclohexane-1,3-dione derivatives

Details Herbicidal cyclohexane-1,3-dione derivatives Herbicidal cyclohexane-1,3-dione derivatives

C - Chemistry, Metallurgy

07

C

260/474, 260/492

C07C 45/45 (2006.01) A01N 35/10 (2006.01) A01N 37/02 (2006.01) A01N 37/10 (2006.01) C07C 45/64 (2006.01) C07C 45/67 (2006.01) C07C 49/217 (2006.01) C07C 49/657 (2006.01) C07C 49/747 (2006.01) C07C 49/835 (2006.01)

Patent

CA 1203543

- 106 - ABSTRACT Herbicidal Cyclohexane-1,3-dione Derivatives The invention concerns novel compounds of the formula I Image I wherein R1 is selected from hydrogen, alkyl, alkenyl, alkynyl, substituted alkyl, acyl, alkylsulfonyl, benzene- sulfonyl, substituted benzenesulfonyl, and an in- organic or organic cation; R2 is selected from alkyl, alkenyl, alkynyl, substituted alkyl, haloalkenyl and haloalkynyl; R3 is selected from alkyl, fluoroalkyl, alkenyl, alkynyl and phenyl; and n is an integer chosen from 2 to 5. The compounds are cereal selective herbicides and in further embodiments the invention provides processes for the preparation of compounds of formula I, inter- - 107 - mediates useful in the preparation of compounds of formula I, herbicidal compositions containing as active ingredient a compound of formula I, and processes for severely damaging or killing unwanted plants by apply- ing to the plants or to the growth medium of the plants an effective amount of a compound of formula I.

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