Cyclohexanedione derivatives, their preparation and herbicides containing them
AssigneeBASF SE
InventorsRainer Becker, Dieter Jahn, Wolfgang Rohr, Walter Himmele, Hardo Siegel, Bruno Wuerzer
Life of this patent
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Abstract
Cyclohexanedione derivatives of the general formula ##STR1## where R.sup.1 is alkyl, R.sup.2 is alkyl, alkenyl, alkynyl or haloalkenyl, X is alkylene, n is 0 or 1, Y is a heterocyclic radical and Z is hydrogen or methoxycarbonyl, and salts of these compounds are used in herbicides.
Claims6
A cyclohexadione derivative of the formula ##STR13## where R.sup.1 is alkyl of 1 to 4 carbon atoms, R.sup.2 is alkyl of 1 to 4 carbon atoms, alkenyl of 3 or 4 carbon atoms, alkynyl of 3 or 4 carbon atoms or haloalkenyl of 3 to 4 carbon atoms and 1 to 3 halogen atoms, X is straightchain or branched alkylene of 1 to 5 carbon atoms, which is unsubstituted or substituted by phenyl, n is 0 or 1, Y is, selected from the group consisting of tetrahydropyranyl, dihydropyranyl, methyltetrahydropyranyl, dioxanyl, dioxolanyl, dithiolanyl, dihydrothiopyranyl, tetrahydrothiopyranyl, dimethyldihydropyranyl, tetrahydrofuranyl and dimethyldihydrothiopyranyl, and Z is hydrogen or methoxycarbonyl, or a salt thereof.
A process for combating the growth of unwanted plants, wherein the plants or the soil are treated with a cyclohexanedione derivative of the formula ##STR14## where R.sup.1 is alkyl of 1 to 4 carbon atoms, R.sup.2 is alkyl of 1 to 4 carbon atoms, alkenyl of 3 or 4 carbon atoms, alkynyl of 3 or 4 carbon atoms or haloalkenyl of 3 or 4 carbon atoms and 1 to 3 halogen atoms, X is straightchain or branched alkylene of 1 to 5 carbon atoms, which is unsubstituted or substituted by phenyl, n is 0 or 1, Y is, selected from the group consisting of tetrahydropyranyl, dihydropyranyl, methyltetrahydropyranyl, dioxanyl, dioxolanyl, dithiolanyl, dihydrothiopyranyl, tetrahydrothiopyranyl, dimethyldihydropyranyl, tetrahydrofuranyl and dimethyldihydrothiopyranyl, and Z is hydrogen or methoxycarbonyl, or a salt thereof.
A cyclohexanedione derivative selected from the group consisting of 2-(1-ethoxyaminobutylidene)-5-[3-(4-methyltetrahydropyranyl]-cyclohexane-1 ,3-dione, 2-(1-allyloxyaminobutylidene)-5-[3-(4-methyltetrahydropyranyl)]-cyclohexan e-1,3-dione, and 2-(1-ethoxyaminobutylidene)-5-[3-(2H)-5,6-dihydropyranyl]-cyclohexane-1,3- dione.
Dependencies are inferred from the claim text.