3-HYDR0XY-4-ARYL-5-PYRAZ0LINE DERIVATIVES AS HERBICIDES
The present invention relates to novel herbicidally active 3-hydroxy-4-aryl-5-oxopyrazoline derivatives, to processes for their preparation, to compositions which comprise these compounds and may additionally comprise safeners, and to the use of these compounds as herbicides for controlling weeds and grasses, in particular in crops of useful plants.
3-Hydroxy-4-aryl-5-oxopyrazoline derivates having herbicidal action are described, for example, in EP-A-0 508 126, WO 96/25395 and WO 96/21652 . We have now found novel 3-hydroxy-4-aryl-5-oxopyrazoline derivatives having herbicidal properties.
The present invention thus provides compounds of the formula I
Rι, R2 and R3 independently of one another are halogen, nitro, cyano, C C4alkyl, C2- C4alkenyl, C2-C4alkynyl, C1-C4haloalkyl, C2-C6haloalkenyl, C3-C6cycloalkyl, halogen- substituted C3-C6cycloalkyl, d-Cealkoxyalkyl, C C6alkylthioalkyl, hydroxyl, mercapto, Cr C6alkoxy, C3-C6alkenyloxy, C3-C6alkynyloxy, CrC4alkylcarbonyl, Cι-C4alkoxycarbonyl, C C4alkylthio, CrC4alkylsulfinyl, C C alkylsulfonyl, amino, CrC alkyiamino or di(CrC4- alkyl)amino; R4 and R5 together are a group
-C-R6(R7)-O-C-R8(R9)-C-R10(Rιι)-C-R12(R13)- (Z,),
-C-R14(R15)-C-R16(Rι7)-O-C-R18(Rι9)-C-R2o(R2ι)- (Z2), or
-C-R22(R23)-C-R24(R25)-C-R26(R27)-O-C-R28(R29)- (Z3); in which Re, R7, RΘ, R9, Rio, RH > R121 RI3, RI4, R15. ιβ. R17, R-iβ. Ri9> 2OJ 211 R22. R23. ∑4ι R25, 26, R27, R28, and R29 independently of one another are hydrogen, halogen, C C alkyl
or C C4haloalkyl where an alkylene ring, which together with the carbon atoms of the groups Z1( Z2 or Z3 contains 2 to 6 carbon atoms and may be interrupted by oxygen, may either be fused or spiro-linked to the carbon atoms of the groups Zι, Z2 or Z3, or where this alkylene ring bridges at least one ring atom of the groups Zι, Z2 or Z3; G is hydrogen, -C(Xι)-R30, -C(X2)-X3-R3ι, -C(X4)-N(R32)-R33, -SO2-R3 , an alkali metal, alkaline earth metal, sulfonium or ammonium cation or -P(Xs)( 35)-R36; Xi, X2, X3, X4 and X5 independently of one another are oxygen or sulfur; and R30, R31, R32, R33, 34, R35 and R36 independently of one another are hydrogen, Cι-C5alkyl, C C5haloalkyl, C2-C5alkenyl, CrC5alkoxyalkyl, C3-C6cycloalkyl or phenyl, and R34 is additionally C2-C2oalkenyl, C2-C20alkenyl substituted by halogen, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy, alkoxy, thioalkyl, alkylthiocarbonyl, alkylcarbonylthio, alkylsulfonyl, alkylsulfoxyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonyloxy, alkylsulfonylamino, alkylamino, dialkylamino, alkylcarbonylamino, dialkylcarbonylamino, alkyl-alkylcarbonylamino, cyano, (C3-C7)cycloalkyl, (C3-C7)heterocyclyl, trialkylsilyl, trialkylsilyloxy, phenyl, substituted phenyl, heteroaryl or substituted heteroaryl, C2- C20alkynyl, C2-C20alkynyl substituted by halogen, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy, alkoxy, thioalkyl, alkylthiocarbonyl, alkylcarbonylthio, alkylsulfonyl, alkylsulfoxyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonyloxy, alkylsulfonylamino, alkylamino, dialkylamino, alkylcarbonylamino, dialkylcarbonylamino, alkyl- alkylcarbonylamino, cyano, (C3-C7)cycloalkyl, (C3-C7)heterocyclyl, trialkylsilyl, trialkylsilyloxy, phenyl, substituted phenyl, heteroaryl or substituted heteroaryl, (CrC7)cycloalkyl, (d- C7)cycloalkyl substituted by halogen, haloalkyl, (CrC^alkyl, alkoxy, alkylcarbonyloxy, thioalkyl, alkylcarbonylthio, alkylamino, alkylcarbonylamino, trialkylsilyl or trialkylsilyloxy, heteroaryl, heteroaryl substituted by halogen, haloalkyl, nitro, cyano, (C1-C6)alkyl, alkoxy, alkylcarbonyloxy, thioalkyl, alkylcarbonylthio, alkylamino, alkylcarbonylamino, trialkylsilyl or trialkylsilyloxy, heteroaryloxy, substituted heteroaryloxy, heteroarylthio, substituted heteroarylthio, heteroarylamino, substituted heteroarylamino, diheteroarylamino, substituted diheteroarylamino, phenylamino, substituted phenylamino, diphenylamino, substituted diphenylamino, cycloalkylamino, substituted cycloalkylamino, dicycloalkylamino, substituted dicycloalkylamino, cycloalkoxy or substituted cycloalkoxy, and salts and diastereomers of the compounds of the formula I.
In the above definitions, halogen is to be understood as meaning fluorine, chlorine, bromine and iodine, preferably fluorine, chlorine and bromine. The alkyl groups in the definitions of the substituents are, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl or tert-butyl, and the isomeric pentyls and hexyls. Suitable cycloalkyl substituents
contain 3 to 6 carbon atoms and are, for example, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl. These may be mono- or polysubstituted by halogen, preferably by fluorine, chlorine or bromine. Alkenyl is to be understood as meaning, for example, vinyl, allyl, methallyl, 1 -methylvinyl or but-2-en-1-yl. Alkynyl is, for example, ethinyl, propargyl, but-2-in- 1-yl, 2-methylbutin-2-yl or but-3-in-2-yl. Haloalkyl groups preferably have a chain length of 1 to 4 carbon atoms. Haloalkyl is, for example, fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, dichloromethyl, trichloromethyl, 2,2,2-trifluoroethyl, 2-fluoroethyl, 2- chloroethyl, pentafluoroethyl, 1 J-difiuoro-2,2,2-trichloroethyl, 2,2,3,3-tetrafluoroethyl and 2,2,2-trichloroethyl; preferably trichloromethyl, difluorochloromethyl, difluoromethyl, trifluoromethyl and dichlorofluoromethyl. Suitable haloalkenyls are alkenyl groups which are mono- or polysubstituted by halogen, halogen being fluorine, chlorine, bromine and iodine and in particular fluorine and chlorine, for example 2,2-difluoro-1 -methylvinyl, 3- fluoropropenyl, 3-chloropropenyl, 3-bromopropenyl, 2,3,3-trifluoropropenyl, 2,3,3- trichloropropenyl and 4,4,4-trifluorobut-2-en-1-yl. Among the C2-C6alkenyl groups which are mono-, di- or trisubstituted by halogen, preference is given to those having a chain length of
3 to 5 carbon atoms. Alkoxy groups preferably have a chain length of 1 to 6 carbon atoms. Alkoxy is, for example, methoxy, ethoxy, propoxy, isopropoxy, n-butoxy, isobutoxy, sec- butoxy and tert-butoxy, and the isomeric pentyloxy and hexyloxy radicals; preferably methoxy and ethoxy. Alkylcarbonyl is preferably acetyl or propionyl. Alkoxycarbonyl is, for example, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, n- butoxycarbonyl, isobutoxycarbonyl, sec-butoxycarbonyl or tert-butoxycarbonyl; preferably methoxycarbonyl or ethoxycarbonyl. Alkylthio groups preferably have a chain length of 1 to
4 carbon atoms. Alkylthio is, for example, methylthio, ethylthio, propylthio, isopropylthio, n- butylthio, isobutylthio, sec-butylthio or tert-butylthio, preferably methylthio and ethylthio. Alkylsulfinyl is, for example, methylsulfinyl, ethylsulfinyl, propylsulfinyl, isopropylsulfinyl, n- butylsulfinyl, isobutylsulfinyl, sec-butylsulfinyl, tert-butylsulfinyl; preferably methylsulfinyl and ethylsulfinyl. Alkylsulfonyl is, for example, methylsulfonyl, ethylsulfonyl, propylsulfonyl, isopropylsulfonyl, n-butylsulfonyl, isobutylsulfonyl, sec-butylsulfonyl or tert-butyisulfonyl; preferably methylsulfonyl or ethylsulfonyl. Alkylamino is, for example, methylamino, ethylamino, n-propylamino, isopropylamino or the isomeric butylamines. Dialkylamino is, for example, dimethylamino, methylethylamino, diethylamino, n-propylmethylamino, dibutyiamino and diisopropylamino. Alkoxyalkyl groups preferably have 1 to 6 carbon atoms. Alkoxyalkyl is, for example, methoxymethyl, methoxyethyl, ethoxymethyl, ethoxyethyl, n-propoxymethyl, n-propoxyethyl, isopropoxymethyl or isopropoxyethyl. Alkylthioalkyl is, for example, methylthiomethyl, methylthioethyl, ethylthiomethyl, ethylthioethyl, n-propylthiomethyl, n-propylthioethyl, isopropylthiomethyl, isopropylthioethyl,
butylthiomethyl, butylthioethyl or butylthiobutyl. Phenyl may be substituted. In this case, the substituents may be in the ortho, meta and/or para position. The substituents are preferably located in the positions ortho and para to the site where the ring is attached.
The halogen, alkyl, cycloalkyl, alkoxy, alkylthio, alkylcarbonyl, alkylsulfonyl and (di)alkylamino radicals which may be present in the radicals R3 , in particular -SO^M (G), are derived from the corresponding radicals mentioned above. Preferred heterocyclyl radicals are those containing 1 or 2 heteroatoms, for example N, S or O. They are usually saturated. Heteroaryl radicals are customarily aromatic heterocycles which preferably contain 1 to 3 heteroatoms, such as N, S and O. Examples of suitable heterocycles and heteroaromatics are: pyrrolidine, piperidine, pyran, dioxane, azetidine, oxetan, pyridine, pyrimidine, triazine, thiazole, thiadiazole, imidazole, oxazole, isoxazole and pyrazine, furan, morpholine, piperazine, pyrazole, benzoxazole, benzothiazole, quinoxaline and quinoline. These heterocycles and heteroaromatics may also be substituted, for example by halogen, alkyl, alkoxy, haloalkyl, haloalkoxy, nitro, cyano, thioalkyl, alkylamino or phenyl. The C2- C20alkenyl and alkynyl groups R34 may be mono- or polyunsaturated. They preferably contain 2 to 12, in particular 2 to 6, carbon atoms. For illustration, suitable groups -SO2R34 are given in the example below:
,(CH2)n C rH.)n
Alkali metal cations, alkaline earth metal cations or ammonium cations for the substituent G are, for example, the cations of sodium, potassium, magnesium, calcium and ammonium. Preferred sulfonium cations are, in particular, trialkylsulfonium cations, where the alkyl radicals each preferably contain 1 to 4 carbon atoms.
The free valency on the left hand of the groups Z-i, Z2 and Z3 is linked to the 1 -position and the free valency on the right hand is linked to the 2-position of the pyrazoline ring.
Compounds of the formula I, in which an alkylene ring which, together with the carbon atoms of the groups Z1 ? Z2 and Z3 contains 2 to 6 carbon atoms may be fused or spiro- linked to the groups Z Zz and Z3, have, for example, the following structure:
spiro-linked) or
(fused).
Compounds of the formula I, in which in the groups Zι, Z2 or Z3 an alkylene ring bridges at least one ring atom of the groups Z-i, Z2 or Z3, have, for example, the following structure:
(bridged).
R4 and R5 together are in particular a group
-C-R6(R7)-O-C-R8(R9)-C-R10(Rιι)-C-R12(R13)- (Z,),
-C-R14(R15)-C-R16(R17)-O-C-R18(R19)-C-R2o(R2ι)- (Z2), or
-C-R22(R23)"C-R24(R25)-C-R26(R27)-O-C-R28(R29)- (Z3); in which Re, R7, Rs, 9. RIO> Rn. R12. R*i3> R » R15. R16. Ri7f R18. R19, R20, R21, R221 R23. R∑4> R25. R26. R27. R28 and R g independently of one another are hydrogen, halogen, Cι-C4alkyl or CrC haioalkyl, where an alkylene ring which, together with the carbon atoms of the groups
Z , Z2 and Z3, contains 3 to 6 carbon atoms may be fused or spiro-linked to the groups Z_, Z2 and Z3.
Among the compounds of the formula I, preference is given to those in which G is hydrogen. In a particularly preferred group of compounds of the formula I, R4 and R5 together form a group Z2. Also of particular interest are compounds of the formula I in which RL R2 and R3 independently of one another are halogen, CrC4alkyl, C2-C4alkenyl, C2- C4alkynyl or d-C6-alkoxy. Particular preference is given to compounds of the formula I in which R2 is halogen, methyl, ethyl or ethinyl, and to compounds of the formula I in which R^ and R3 independently of one another are methyl, ethyl, isopropyl, vinyl, allyl, ethinyl, methoxy, ethoxy, bromine or chlorine. Very particular preference is given to compounds of the formula I in which G is the group -C(Xι)-R3o or C(X2)-(X3)-R31 in which X1t X2 and X3 are, in particular, oxygen, and R30 and R31 independently of one another are preferably d- C5alkyl. Preference is furthermore given to compounds of the formula I in which R30, R31, R32, R33> R-M, R35 and R36 independently of one another are hydrogen, d-C5alkyl or d- C5haloalkyl.
Another preferred group of compounds of the formula I is is that where at least one ring atom of the groups Z Z2 or Z3 is bridged by an alkylene ring which, together with the carbon atoms of the groups Z^, Z2 or Z3, contains 2 to 6 carbon atoms and may be interrupted by oxygen.
The invention also includes the salts which the compounds of the formula I can form with acids. Suitable acids for forming the acid addition salts are both organic and inorganic acids. Examples of such acids are hydrochloric acid, hydrobromic acid, nitric acid, phosphoric acids, sulfuric acid, acetic acid, propionic acid, butyric acid, valeric acid, oxalic acid, malonic acid, fumaric acid, organic sulfonic acids, lactic acid, tartaric acid, citric acid and salicylic acid. The salts of the compounds of the formula I with acidic hydrogen also include alkali metal salts, for example sodium salts and potassium salts; alkaline earth metal salts, for example calcium salts and magnesium salts; ammonium salts, i.e. unsubstituted ammonium salts and mono- or polysubstituted ammonium salts, and salts with other organic nitrogen bases. Correspondingly, suitable salt formers are alkali metal and alkaline earth metal hydroxides, in particular the hydroxides of lithium, sodium, potassium, magnesium or calcium, where those of sodium or potassium are particularly important.
Examples of amines which are suitable for forming ammonium salts are both ammonia and primary, secondary and tertiary CrCisalkylamines, d-C hydroxyalkylamines and C2- dalkoxyalkylamines, for example methylamine, ethylamine, n-propylamine, isopropylamine, the four isomeric butylamines, n-amylamine, isoamylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, pentadecylamine, hexadecylamine, heptadecylamine, octadecylamine, methylethylamine, methylisopropylamine, methylhexylamine, methylnonylamine, methylpentadecylamine, methyloctadecylamine, ethylbutylamine, ethylheptylamine, ethyloctylamine, hexylheptylamine, hexyloctylamine, dimethylamine, diethylamine, di-n-propylamine, diisopropylamine, di-n-butylamine, di-n-amylamine, diisoamylamine, dihexylamine, diheptylamine, dioctylamine, ethanolamine, n- propanoiamine, isopropanolamine, N,N-diethanolamine, N-ethylpropanolamine, N- butylethanolamine, allylamine, n-butenyl-2-amine, n-pentenyl-2-amine, 2,3-dimethylbutenyl- 2-amine, dibutenyl-2-amine, n-hexenyl-2-amine, propylenediamine, trimethylamine, triethylamine, tri-n-propylamine, triisopropylamine, tri-n-butylamine, triisobutylamine, tri-sec- butylamine, tri-n-amylamine, methoxyethylamine and ethoxyethylamine; heterocyclic amines, for example pyridine, quinoline, isoquinoiine, morpholine, N-methyimorpholine, thiomorpholine, piperidine, pyrrolidine, indoline, quinuclidine and azepine; primary arylamines, for example anilines, methoxyanilines, ethoxyanilines, o, m, p-toluidines, phenylenediamines, benzidines, naphthylamines and o, m, p-chloroanilines; but in particular triethylamine, isopropylamine and diisopropylamine.
In the processes described in this application, unless chiral starting materials are employed, the unsymmetrically substituted compounds of the formula I are generally obtained as racemates. The stereoisomers can then be separated by known methods, such as fractional crystallization after salt formation with optically pure bases, acids or metal complexes, or else by chromatographic processes such as high pressure liquid chromatography (HPLC) on acetylcellulose, owing to their physicochemical properties. In the present invention, the active compounds of the formula I are to be understood as meaning both the enriched and optically pure forms of the stereoisomers in question, and the racemates or diastereomers. Unless specific reference is made to the individual optical isomers, the given formula is to be understood as meaning those racemic mixtures which are formed in the preparation process mentioned. If an aliphatic C=C double bond is present, geometrical isomerism may additionally occur.
Also depending on the type of the substituents, the compounds of the formula I may be present as geometrical and/or optical isomers and isomer mixtures, and also as tautomers
and mixtures of tautomers. These compounds of the formula I likewise form part of the subject-matter of the present invention. The compounds of the formula I in which the group
G is hydrogen may, for example, be present in the following tautomer equilibriums:
(lb) (lc)
If G is different from hydrogen and Z is the group Zi or Z3, or if G is different from hydrogen and Z2 is unsymmetrically substituted, fused or spiro-iinked, the compound of the formula I may be present as an isomer of the formula Id
Processes for preparing compounds which, with respect to the meaning of the substituents R and R
5, are different from the compounds of the formula I according to the present invention are, for example, described in WO 96/21652. The compounds of the formula I according to the present invention can be prepared by methods similar to the processes described in WO 96/21652. The compounds of the formula II
in which Ri, R
2, R
3, R
4 and R
5 are as defined under formula I and which are employed as starting materials for such processes can be prepared, for example, by reacting a compound of the formula III
in which R is CrCealkyl, d-C
6haloalkyl, preferably methyl, ethyl or trichloroethyl, and Ri, R
2 and R
3 are as defined under formula I in an inert organic solvent, if appropriate in the presence of a base, with a compound of the formula IV or IVa
in which R4 and R5 are as defined under formula I. Other preparation processes for compounds of the formula II are described, for example, in WO 92 16510 .
The compounds of the formula III are either known, or they can be prepared similarly to known processes. Processes for preparing compounds of the formula III and their reaction with hydrazines are described, for example, in WO 97/02243 . Compounds of the formula III in which R is d-C6alkyl, CrC6haloalkyi, preferably methyl, ethyl or trichloroethyl, and R ( R2 and R3 are as defined under formula I can be prepared by methods known to the person skilled in the art. For example, compounds of the formula III in which R is CrC6alkyl, d- C6haloalkyl, preferably methyl, ethyl or trichloroethyl, and R1 ( R2 and R3 independently of
one another are d-C alkyl, C2-C alkenyl, C2-C4alkynyl can be prepared by the process of cross-coupling according to Stille (J.K. Stille, Angew. Chem. 1986. 98, 504-519), Sonogashira (K. Sonogashira et al., Tetrahedron Lett. 1975. 4467-4470), Suzuki (N. Miyaura, A. Suzuki, Chem. Rev. 1995. 95, 2457-2483) or Heck (R.F. Heck, Org. React. 1982. 27, 345-390), with or without subsequent hydrogenation. This procedure is illustrated by the following reaction scheme:
The compounds of the formulae IV and IVa are either known, or they can be prepared by known processes. Processes for preparing compounds of the formula IV are described, for example, in WO 95/00521. These compounds can be prepared, for example, by heating a compound of the formula V
in which R
42 is hydrogen, C C
4alkyl, CrC
6alkoxy, Cι-C
6haloalkoxy, benzyloxy, preferably hydrogen, methyl, methoxy, ethoxy, trichloroethoxy, tert-butoxy or benzyloxy and R
4 and R
5 are as defined under formula I in the presence of a base or an acid in an inert solvent. Compounds of the formula V in which R
42 is hydrogen, C C
4alkyl, CrC
6alkoxy, d- C
6haloalkoxy, benzyloxy, preferably hydrogen, methyl, methoxy, ethoxy, trichloroethoxy, tert-butoxy or benzyloxy and R
4 and R
5are as defined under formula I can be prepared, for example, by reacting a compound of the formula VI
in which R
42 is hydrogen, C C
4alkyl, d-C
6alkoxy, C
rC
6haloalkoxy, benzyloxy, preferably hydrogen, methyl, methoxy, ethoxy, trichloroethoxy, tert-butoxy or benzyloxy in the presence of a base and an inert solvent with a compound of the formula VII
Y- •Z1 , Z2, or Z ■Y (VII),
in which Y is halogen, alkyl/aryl sulfonates -OSO2R43, preferably bromine, chlorine, iodine, mesylate (R43 = CH3), triflate (R 3 = CF3) or tosylate (R 3 = p-tolyl) and Zi, Z2andZ3are as defined under formula I. In the formula VII, the free valencies of the groups Zι,Z2and Z3are in each case attached to the group Y. Compounds of the formula VI and VII are known, or they can be prepared by methods known to the person skilled in the art.
Compounds of the formula IV in which R4 and R5 together are a group Z2 -C-R14(R15)-C-R16(R17)-O-C-Rι8(Ri9)-C-R2o(R2ι)- (Z2), in which R14, R15, Rι6, R17, Rιβ, R19, R20 and R2ι are hydrogen can be prepared, for example, according to the following reaction scheme:
Compounds of the formula I in which R
4 and R
5 are a group Zi or Z
3 can be prepared using the methods of the synthesis examples given above. Thus, the compounds of the formula III can, for example, be reacted with a hydrazine alkanol of the formula IV(b)
(here, R6-Ri3 and R22-R2g are hydrogen) to give the compounds of the formula IVc
followed by a cyclization, for example with formaldehyde, to give the end products of the formula le
The compound of the formula le in which R-_ and R3 are ethyl and R2 is methyl has a melting point of 186-191 °C (decomp.). Similarly, it is also possible to prepare compounds of the formula I in which the substituents R6-Ri3 and R22-R29 are different from hydrogen and, independently of one another, have one of the meanings mentioned for them above.
The end products of the formula I can be isolated in a customary manner by concentration and/or evaporation of the solvent and be purified by recrystallization or trituration of the solid residue in solvents in which they are not readily soluble, such as ethers, alkanes, aromatic hydrocarbons or chlorinated hydrocarbons, or by chromatography. Salts of compounds of the formula I can be prepared in a manner known per se. Such preparation methods are described, for example, in WO 96/21652.
The compounds of the formula I or compositions comprising them can be used according to the invention by all the application methods customary in agriculture, for example pre- emergence application, postemergence application and seed dressing, and various methods and techniques, for example controlled release of active compounds. To this end, the active compound is absorbed in solution onto mineral granule carriers or polymerized granules (urea/formaldehyde) and dried. If appropriate, a coating which allows the active compound to be released in metered form over a certain period of time can additionally be applied (coated granules).
The compounds of the formula I can be employed as herbicides in unchanged form, i.e. as they are obtained in the synthesis, but they are preferably processed in a customary manner with the auxiliaries conventionally used in the art of formulation, for example to give emulsifiable concentrates, directly sprayable or dilutable solutions, dilute emulsions, wettable powders, soluble powders, dusts, granules or microcapsules. Such formulations are described, for example, in WO 97/34485 on pages 9 to 13. The methods of application, such as spraying, atomizing, dusting, wetting, scattering or watering, in the same way as the nature of the compositions, are chosen according to the required aims and the given circumstances.
The formulations, i.e. the compositions, formulations or preparations comprising the active compound of the formula I or at least one active compound of the formula I and as a rule one or more solid or liquid formulation auxiliaries, are prepared in a known manner, for example by intimate mixing and/or grinding of the active compounds with the formulation auxiliaries, for example solvents or solid carriers. Surface-active compounds (surfactants) can furthermore additionally be used during the preparation of the formulations. Examples of solvents and solid carriers are given, for example, in WO 97/34485 on page 6. Depending on the nature of the active compound of the formula I to be formulated, suitable surface-active compounds are nonionic, cationic and/or anionic surfactants and surfactant mixtures having good emulsifying, dispersing and wetting properties.
Examples of suitable anionic, nonionic and cationic surfactants are listed, for example, in WO 97/34485 on pages 7 and 8.
The surfactants conventionally used in the art of formulation and which can also be used to prepare the herbicidal compositions according to the invention are described, inter alia, in "Mc Cutcheon's Detergents and Emulsifiers Annual", MC Publishing Corp., Ridgewood New Jersey, 1981 , Stache, H., "Tensid-Taschenbuch" [Surfactant handbook], Carl Hanser Verlag, Munich/Vienna, 1981 and M. and J. Ash, "Encyclopedia of Surfactants", Vol Mil, Chemical Publishing Co., New York, 1980-81.
The efficacy of herbicidal and plant-growth-inhibiting compositions according to the invention containing a herbicidally effective amount of a compound of the formula I can be enhanced by addition of spray tank adjuvants.
These adjuvants may be, for example: nonionic surfactants, mixtures of nonionic surfactants, mixtures of anionic surfactants with nonionic surfactants, cationic surfactants, organosilicon surfactants, mineral oil derivatives with and without surfactants, vegetable oil derivatives with and without addition of surfactants, alkylated derivatives of oils of vegetable or mineral origin with and without surfactants, fish oils and other oils of animal nature and their alkyl derivatives with and without surfactants, natural higher fatty acids, preferably having 8 to 28 carbon atoms, and their alkyl ester derivatives, organic acids which contain an aromatic ring system and one or more carboxylic esters, and their alkyl derivatives, furthermore suspensions of polymers of vinyl acetate or copolymers of vinyl acetate/acrylic esters. Mixtures of individual adjuvants with one another and in combination with organic solvents may further increase the effect.
Suitable nonionic surfactants are, for example, polyglycol ether derivatives of aliphatic or cycloaliphatic alcohols, saturated or unsaturated fatty acids and alkylphenols, preferably those which may contain 3 to 30 glycol ether groups and 8 to 20 carbon atoms in the (aliphatic) hydrocarbon radical and 6 to 18 carbon atoms in the alkyl radical of the alkylphenols.
Other suitable nonionic surfactants are the water-soluble polyethylene oxide adducts on polypropylene glycol, ethylenediaminopolypropylene glycol and alkylpolypropylene glycol preferably having 1 to 10 carbon atoms in the alkyl chain which preferably contain 20 to 250 ethylene glycol ether groups and 10 to 100 propylene glycol ether groups. The abovementioned compounds generally contain 1 to 5 ethylene glycol units per propylene glycol unit.
Other examples of nonionic surfactants which may be mentioned are nonylphenolpolyethoxyethanols, castor oil polyglycol ethers, polypropylene/polyethylene oxide adducts, tributylphenoxypolyethoxyethanol, polyethylene glycol and octylphenoxypolyethoxyethanol.
Also suitable are fatty esters of polyoxyethylene sorbitan, for example polyoxyethylene sorbitan trioleate.
Preferred anionic surfactants are, in particular, alkyl sulfates, alkyl sulfonates, alkylaryl sulfonates, alkylated phosphoric acids and their ethoxylated derivatives. The alkyl radicals usually contain 8 to 24 carbon atoms.
Preferred nonionic surfactants are known under the following trade names:
Polyoxyethylene cocoalkylamine (for example AMIET 105 (Kao Co.)), polyoxyethylene oleyiamine (for example AMIET® 415 (Kao Co.)), nonylphenolpolyethoxyethanols, polyoxyethylene stearylamine (for example AMIET® 320 (Kao Co.)), N- polyethoxyethylamines (for example GENAMIN® (Hoechst AG)), N,N,N',N'- tetra(polyethoxypolypropoxyethyl)ethylene diamines (for example TERRONILβand TETRONICβ (BASF Wyandotte Corp.)), BRIJβ (Atlas Chemicals), ETHYLAN® CD and ETHYLAN® D (Diamond Shamrock), GENAPOL® C, GENAPOL® O, GENAPOL8 S and GENAPOL® X080 (Hoechst AG), EMULGEN® 104P, EMULGEN® 109P and EMULGEN® 408 (Kao Co.); DISTY® 125 (Geronazzo), SOPROPHOR® CY 18 (Rhone Poulenc S.A.); NONISOL® (Ciba-Geigy), MRYJ® (ICI); TWEEN® (ICI); EMULSOGEN® (Hoechst AG); AMIDOX® (Stephan Chemical Co.), ETHOMID® (Armak Co.); PLURONIC® (BASF Wyandotte Corp.), SOPROPHOR® 461 P (Rhone Poulenc S.A.), SOPROPHOR® 496/P (Rhone Poulenc S.A.), ANTAROX FM-63 (Rhone Poulenc S.A.), SLYGARD 309 (Dow Corning), SILWET 408, SILWET L-7607N (Osi-Specialities).
The cationic surfactants are primarily quaternary ammonium salts which contain, as N- substituents, at least one alkyl radical having 8 to 22 C atoms and, as further substituents, lower nonhalogenated or halogenated alkyl, benzyl or lower hydroxyalkyl radicals. The salts are preferably present as halides, methyl sulfates or ethyl sulfates, for example stearyltrimethylammonium chloride or benzyldi(2-chloroethyl)ethylammonium bromide.
The oils used are either of mineral or natural origin. The natural oils may additionally be of animal or vegetable origin. In the case of animal oils, preference is given, in particular, to derivatives of beef tallow, but fish oils (for example sardine oil) and derivatives thereof are also used. Vegetable oils are mainly seed oils of various origin. Examples of particularly preferred vegetable oils which may be mentioned are coconut, rapeseed or sunflower oils and derivatives thereof.
Surfactants, oils, in particlar vegetable oils, derivatives thereof such as alkylated fatty acids and mixtures thereof, for example with preferably anionic surfactants such as alkylated phosphoric acids, alkyl sulfates and alkyiaryl sulfonates and higher fatty acids which are customary in formulation and adjuvant technique and which can also be employed in the compositions according to the invention and spray tank solutions thereof are described,
inter alia, in "Mc Cutcheon's Detergents and Emulsifiers Annual", MC Publishing Corp., Ridgewood New Jersey, 1998, Stache, H., "Tensid-Taschenbuch" [Surfactant handbook], Carl Hanser Verlag, Munich/Vienna, 1990, M. and J. Ash, "Encyclopedia of Surfactants", Vol. I-IV, Chemical Publishing Co., New York, 1981-89, G. Kapusta, "A Compendium of Herbicide Adjuvants", Southern Illinois Univ., 1998, L. Thomson Harvey, "A Guide to Agricultural Spray Adjuvants Used in the United States", Thomson Pubns., 1992.
The herbicidal formulations as a rule comprise 0.1 to 99% by weight, in particular 0.1 to 95% by weight, of herbicide, 1 to 99.9% by weight, in particular 5 to 99.8% by weight, of a solid or liquid formulation auxiliary and 0 to 25% by weight, in particular 0.1 to 25% by weight, of a surfactant. While concentrated compositions are rather preferred as commercial goods, the end user as a rule uses dilute compositions. The compositions can also comprise further additives, such as stabilizers, for example epoxidized or non- epoxidized vegetable oils (epoxidized coconut oil, rapeseed oil or soya oil), defoamers, for example silicone oil, preservatives, viscosity regulators, binders, tackifiers and fertilizers or other active compounds.
The herbicidally active compounds of the formula I are as a rule applied to the plants or their habitat, at application rates of 0.001 to 4 kg/ha, in particular 0.005 to 2 kg/ha. The dosage required for the desired effect can be determined by tests. It depends on the nature of the effect, the development stage of the crop plant and the weed and on the application (location, time, process) and can, as a function of these parameters, vary within wide ranges.
The compounds of the formula I have herbicidal and growth-inhibiting properties, owing to which they can be used in crops of useful plants, in particular in cereals, cotton, soya, sugar beet, sugar cane, plantings, rapeseed, maize and rice, very particularly in maize and cereals, and for the non-selective control of weeds. Crops include those which have been rendered tolerant towards herbicides or herbicide classes by conventional breeding methods or genetical engineering methods. The weeds to be controlled can be both monocotyledonous and dicotyledonous weeds, for example Stellaria, Agrostis, Digitaria, Avena, Brachiaria, Phalaris, Setaria, Sinapis, Lolium, Solanum, Echinochioa, Scirpus, Monochoria, Sagittaria, Panicum, Bromus, Alopecurus, Sorghum halepense, Sorghum bicolor, Rottboellia, Cyperus, Abutilon, Sida, Xanthium, Amaranthus, Chenopodium, Ipomoea, Chrysanthemum, Galium, Viola, Matricharia, Papaver and Veronica. The herbicidal composition according to the invention is particularly suitable for controlling
Alopecurus, Avena, Agrostis, Setaria, Phalaris, Lolium, Panicum, Echinochloa, Brachiaria and Digitaria.
Surprisingly, it has been found that specific safeners known from US-A-5 041 157, US-A-5-541 148, US-A-5 006 656, EP-A-0 094 349, EP-A-0 551 650, EP-A-0 268 554, EP-A-0 375 061 , EP-A-0 174 562, EP-A-492 366, WO 91/7874, WO 94/987, DE-A-19 612 943, WO 96/29870, WO 98/13361 , WO 98/39297, WO 98/27049, EP 716 073, EP 613 618, US-A-5 597 776 and EP-A-430 004 are suitable for mixing with the herbicidal composition according to the invention. Consequently, the present invention also relates to a selective herbicidal composition for controlling grasses and weeds in crops of useful plants, in particular in crops of maize and cereals, said composition comprising a herbicide of the formula I and a safener (antidote) and which protects the useful plants, but not the weeds, against the phytotoxic effect of the herbicide, and to the use of this composition for controlling weeds in crops of useful plants.
According to the invention, a selective-herbicidal composition is therefore proposed which, in addition to customary inert formulation auxiliaries such as carriers, solvents and wetting agents, comprises, as active compound, a mixture of a) a herbicidally effective amount of a compound of the formula I
in which R
1 ( R
2, R
3, R
4, R
5 and G are as defined above, and b) a herbicide-antagonistically effective amount of either a compound of the formula X
in which R
37 is hydrogen, d-C
8alkyl or d-C
6alkoxy- or C
3-C
6alkenyloxy-substituted d- C
θalkyl; and X
6 is hydrogen or chlorine; or a compound of the formula XI
E is nitrogen or methine;
R38 is -CCI3, phenyl or halogen-substituted phenyl; R39 and R40 independently of one another are hydrogen or halogen; and R4ι is d-dalkyl; or a compound of the formula XII
in which Rψj and R
45 independently of one another are hydrogen or halogen and R
46, R
47 and R
4β independently of one another are d-C alkyl, or a compound of the formula XIII
R51 and R52 independently of one another are hydrogen, CrC8alkyl, C3-C8cycloalkyl,
C
3-C
6alkenyl, C
3-C
6alkynyl, ,or d-C
4alkoxy- or
substituted d-C
4alkyl; or R
5ι and R
52 together form a C
4-C
6alkylene bridge which may be interrupted by oxygen, sulfur, SO, SO
2, NH or -N(C C alkyl)-,
R53 is hydrogen or d-C alkyl;
R49 is hydrogen, halogen, cyano, trifluoromethyl, nitro, d-C4alkyl, d-C4alkoxy, d-
C4alkylthio, CrC alkylsulfinyl, d-C4alkylsulfonyl, -COOR,, -CONRkRm, -CORn, -SO2NRkRm or -OSO2-d-C4alkyl;
Rg is hydrogen, halogen, cyano, nitro, d-C alkyl, CrC4haloalkyl, d-C4alkylthio, d- dalkylsulfinyl, CrC alkylsulfonyl, -COOR,, -CONRkRm, -CORn, -SO2NRkRm, -OSO2-C
C alkyl, CrC6alkoxy, or d-C6alkoxy which is substituted by d-C4alkoxy or halogen, C3-
C6alkenyloxy, or C3-C6alkenyloxy which is substituted by halogen, or C3-C6alkynyloxy, or R49 and R50 together form a C3-C alkylene bridge which may be substituted by halogen or d-C4alkyl, or they form a C3-C4alkenylene bridge which may be substituted by halogen or d-C4alkyl, or they form a C4alkadienylene bridge which may be substituted by halogen or d-dalkyl;
R50 and Rh independently of one another are hydrogen, halogen, d-C4alkyl, trifluoromethyl, d-C6alkoxy, C C6alkylthio or -COOR,;
Rc is hydrogen, halogen, nitro, d-C4alkyi or methoxy; Rd is hydrogen, halogen, nitro, d- dalkyl, d-C4alkoxy, C C4alkylthio, d-C4alkylsulfinyl, C C alkylsulfonyl, -COOR, or
CONRkRm;
Re is hydrogen, halogen, d-C4alkyl, -COOR,, trifluoromethyl or methoxy, or Rd and Re together form a C3-C4alkyiene bridge;
Rp is hydrogen, halogen, d-dalkyl, -COOR,, trifluoromethyl or methoxy; Rq is hydrogen, halogen, nitro, C C4alkyl, CrC alkoxy, d-C4alkylthio, d-C4alkylsulfinyl, Cι-C4alkylsulfonyl,
-COOR, or CONRkRm, or Rp and Rq together form a C3-C4alkylene bridge;
Rr is hydrogen, halogen, C C4alkyl, -COOR,, trifluoromethyl or methoxy; Rs is hydrogen, halogen, nitro, d-C4alkyl, CrC alkoxy, d-C4alkylthio, d-dalkylsulfinyl, C C4alkylsulfonyl,
-COOR, or CONRkRm, or Rr and Rs together form a C3-C alkylene bridge;
Rt is hydrogen, halogen, C C4alkyl, -COOR,, trifluoromethyl or methoxy; Ru is hydrogen, halogen, nitro, d-C4alkyl, d-C alkoxy, d-C alkylthio, C C4alkylsulfinyl, CrC alkylsulfonyl,
-COOR, or CONRkRm, or Rv and Ru together form a C3-C alkylene bridge;
Rf and Rv are hydrogen, halogen or C C4alkyl;
Rx and Ry independently of one another are hydrogen, halogen, d-C alkyl, C C alkoxy, d-
C4alkylthio, -COOR^, trifluoromethyl, nitro or cyano;
R,, Rk and Rm independently of one another are hydrogen or d-C4alkyl; or
Rk and Rm together form a C4-C6alkylene bridge which may be interrupted by oxygen, NH or
-N(d-C4alkyl)-;
Rn is d-C alkyl, phenyl, or halogen-, C C4alkyl-, methoxy-, nitro- or trifluoromethyl- substituted phenyl;
RM is hydrogen, d-C10alkyl, CrC4alkoxy-C C alkyl, C C alkylthio-CrC4alkyl, di-d-
C4alkylamino-C C alkyl, halo-C C8alkyl, C2-C8alkenyl, halo-C2-C8alkenyl, C3-C8alkynyl, C3-
C7cycloalkyl, halo-C3-C7cycloalkyl, C C8alkylcarbonyl, allylcarbonyl, C3-
Cycycloalkylcarbonyl, benzoyl which is unsubstituted or substituted up to three times on the phenyl ring by identical or different substituents selected from the group consisting of halogen, d-C4alkyl, halo-d-C4alkyl, halo-Cι-C4alkoxy or d-C4alkoxy; or furoyl, thienyl; or d-C4alkyl which is substituted by phenyl, halophenyl, d-C alkylphenyl, d-C4alkoxyphenyl, halo-d-C alkylphenyl, halo-Cι-C alkoxyphenyl, CrC6alkoxycarbonyl, d-C4alkoxy-Cr
C8alkoxycarbonyI, C3-C8alkenyloxycarbonyl, C3-C8alkynyloxycarbonyl, d-
C8alkylthiocarbonyl, C3-C8alkenylthiocarbonyl, C3-C8alkynylthiocarbonyl, carbamoyl, mono-
Cι-C alkylaminocarbonyl, di-Cι-C
4alkylaminocarbonyl; or phenylaminocarbonyl which is unsubstituted or substituted up to three times on the phenyl by identical or different substituents selected from the group consisting of halogen, C C alkyl, halo-C C
4alkyl, halo-d-C
4alkoxy and d-C
4alkoxy, or is monosubstituted by cyano or nitro, or dioxoian-2-yl which is unsubstituted or substituted by one or two d-C
4alkyl radicals, or dioxan-2-yl which is unsubstituted or substituted by one or two d-C
4alkyl radicals, or d-C
4alkyl which is substituted by cyano, nitro, carboxyl or d-C
8alkylthio-CrC
8alkoxycarbonyI; or a compound of the formula XIV
in which R
56 and R
5 independently of one another are d-C
6alkyl or C
2-C
6alkenyl; or R
56 and
R57 together are ; Rse and R59 independently of one another are hydrogen
or C C6alkyl; or R56 and R57 together are
R6o and R6ι independently of one another are d-C alkyl, or R6oand R6ι together are -(CH2)5-;
R62 is hydrogen, d-C4alkyl or
or R56 and R57 together are
Res, Re
4, Res, Ree, Rβ7, Reβ, Reg, R70, R71, R72, R73, R7
4, R75, R76, R77 and R
78 independently of one another are hydrogen or d-C
4alkyl; or a compound of the formula XV
in which R
80 is hydrogen or chlorine and R
79 is cyano or trifluoromethyl, or a compound of the formula XVI
in which R
81 is hydrogen or methyl, or of the formula XVII
R
82 is hydrogen, Cι-C
4alkyl, C C
4alkyl which is substituted by CrC
4alkyl-X - or d- C
4haloalkyi-X
2-, CrC
4haloalkyl, nitro, cyano, -COOR
85, -NR
86R
87, -SO
2NR
88R
89 or
R83 is hydrogen, halogen, d-C4alkyl, trifluoromethyl, Cι-C4alkoxy or d-C haloalkoxy; R84 is hydrogen, halogen or d-C alkyl;
U, V, W1 and Z4 independently of one another are oxygen, sulfur, C(R92)R93, carbonyl, NR94,
in which R
102 is C
2-C
4alkenyl or
C
2-C
4alkynyl; with the proviso that
a) at least one of the ring members U, V, \N or Z, is carbonyl, and a ring member which is
adjacent to this or these ring members is the group or
H C = C , this group being present only once; and
b) two adjacent ring members U and V, V and Wi and Wi and
t may not simultaneously be oxygen;
R95 and R96 independently of one another are hydrogen or d-C8alkyl; or
R95 and R96 together form a C2-C6alkylene group;
AT is R99-Y or -NR97R98;
X2 is oxygen or -S(O)s ;
Y1 is oxygen or sulfur;
R99 is hydrogen, d-C8alkyl, d-C8haloalkyl, Cι-C alkoxy-Cι-C8alkyl, C3-C6alkenyloxy-Cr
C8alkyl or phenyl-d-C8alkyl, where the phenyl ring may be substituted by halogen, d- dalkyl, trifluoromethyl, methoxy or methyl-S(O)5-, C3-C6alkenyl, C3-C6haloalkenyl, phenyl-
C3-C6alkenyl, C3-C6alkynyl, phenyl-C3-C6alkynyl, oxetanyl, furyi or tetrahydrofuryl;
R85 is hydrogen or C C alkyl;
R86 is hydrogen, d-C4alkyl or C C4alkylcarbonyl;
R87 is hydrogen or d-C4alkyl; or
R86 and R87 together form a C4- or C5alkylene group;
Res, R89, R90 and R91 independently of one another are hydrogen or d-C4alkyl; or R88 together with R89 or Rgo together with R9ι independently of one another are C4- or C5- alkylene, where a carbon atom may be replaced by oxygen or sulfur, or one or two carbon atoms may be replaced by -NR10o-;
R92, R100 and R93 independently of one another are hydrogen or d-C8alkyl; or
R92 and R93 together are C2-C6alkylene;
R94 is hydrogen or d-C8alkyl;
R97 is hydrogen, d-C8alkyl, phenyl, phenyl-d-C8alkyl, where the phenyl rings may be substituted by fluorine, chlorine, bromine, nitro, cyano, -OCH3, d-C4alkyl or CH3SO2-, d-
C4alkoxy-d-C8alkyl, C3-C6alkenyl or C3-C6alkynyl;
R98 is hydrogen, C C8alkyl, C3-C6alkenyl or C3-C6alkynyl; or
R97 and R98 together are C4- or C5-alkylene, where a carbon atom may be replaced by oxygen or sulfur, or one or two carbon atoms may be replaced by -NR10r;
R101 is hydrogen or d-C4alkyl; r is 0 or 1 ; and s is 0, 1 or 2, or a compound of the formula XVIII
(XVIII),
in which R103 is hydrogen, CrC6alkyl, C3-C6cycloalkyl, C3-C6alkenyl or C3-C6alkynyi; and RKM, R105 and R10e independently of one another are hydrogen, C C6alkyl, C3-C6cycloalkyl or CrC6alkoxy, with the proviso that one of the substituents R^, R105 and R106 is different from hydrogen; a compound of the formula XIX
in which Z
5 is N or CH, n, in the case where Z
5 is N, is 0, 1 , 2 or 3 and, in the case where Z
5 is CH, is 0, 1 , 2, 3 or 4, R
107 is halogen, CrC
4alkyl, C C
4haloalkyl, d-C
4alkoxy, d- dhaloalkoxy, nitro, d-C
4alkylthio, d-C alkylsulfonyl, d-C
4alkoxycarbonyl or unsubstituted or substituted phenyl or phenoxy, Rι
08 is hydrogen or d-C
4alkyl, R
109 is hydrogen, d- C
4alkyl, C
3-C
6cycloalkyl, C
2-C
6alkenyl, C
2-C
6alkynyl, Cι-C
4haloalkyl, C
2-C
6haloalkenyl, C
2- C
6haloalkynyl, CrC
4alkylthio-d-C alkyl, CrC
4alkylsulfonyl-C C
4alkyl, C C
4alkoxy-Cr dalkyl, C C
4alkenyloxy-CrC
4alkyl or C C
4alkynyloxy-CrC
4alkyl; a compound of the formula XX
in which Ze is O or N-R110 and Rno is a group of the formula
o in which Rm and Ru2 independently of one another are cyano, hydrogen, d-C4alkyl, C3- C6cycloalkyl, C2-C6alkenyl, unsubstituted or substituted phenyl or heteroaryl;
a compound of the formula XXI (XXI),
in which Z
7 is O, S, S=O, SO
2 or CH
2, R
113 and R
114 independently of one another are hydrogen, halogen or d-C alkyl, W
2 and W
3 independently of one another are CH
2COOR
115, COOR
115 or together are a group of the formula -(CH
2)C(O)-O-C(O)-(CH
2)-, and R
115 is hydrogen, d-C
4alkyl, C
2-C alkenyl, C
2-C
6alkynyl, C
3-C
6cycloalkyl, CrC
4haloalkyl, a metal cation or an ammonium cation; a compound of the formula XXII
in which Rn
9 and R
120 independently of one another are hydrogen, halogen or d- dhaloalkyl, R
121 is hydrogen, CrC
4alkyl, C
3-C
4alkenyl, C
3-C
4alkynyl, C C haloalkyl, C
3- C
6cycloalkyl, a metal cation or an ammonium cation, Z
8 is N, CH, C-F or C-CI and W is a group of the formula
in which Rι
22 and R
123 independently of one another are hydrogen or d-C
4alkyl and Rι
24 and R
125 independently of one another are hydrogen or d-C alkyl; a compound of the formula XXIII
in which Rι26 is hydrogen, cyano, halogen, d-C alkyl, C3-C6cycloalkyl, d-C alkoxy, d-
C4alkoxycarbonyl, Cι-C alkylthiocarbonyl, -NH-R128ι -C(O)NH-R128, unsubstituted or substituted aryl or heteroaryl,
R127 is hydrogen, cyano, nitro, halogen, d-C alkyl, d-C4haloalkyl, d-C4alkoxy, d-
C4thioalkyl, CrC4haloalkyl, -NH-R128, -C(O)NH-Rι28, unsubstituted or substituted aryl, heteroaryl, and Rι28 is d-C4alkyl, d-C4haloalkyl, C3-C4alkenyl, C3-C4alkynyl, C3-
C4cycloalkyl, unsubstituted or substituted aryl or heteroaryl, formyl, d-C4-alkylcarbonyl, d-
C -alkylsulfonyl; a compound of the formula XXIV
in which R129 and R130 independently of one another are hydrogen, d-C4alkyl, d- dhaloalkyl, d-C4alkoxy, mono-CrC8- or di-d-C8alkylamino, C3-C6cycloalkyl, d-dthioalkyl, phenyl or heteroaryl, R131 has the meaning of R129 and is additionally OH, NH2, halogen, di- Cι-C4aminoalkyl, d-C4alkylthio, CrC4alkylsulfonyl or d-C4alkoxycarbonyl, Rι32 has the meaning of R129 and is additionally cyano, nitro, carboxyl, d-C4alkoxycarbonyl, di-d- C4aminoalkyl, d-C4alkylthio, d-C aikylsulfonyl, SO2-OH, iso-d-C4aminoalkylsulfonyl or d-C alkoxysulfonyl, Rι33 has the meaning of Rι29 and is additionally OH, NH2, halogen, di-CrC4aminoalkyl, pyrrolidin-1-yl, piperidin-1-yl,
moφholin-1-yl, d-C4alkylthio, C C4alkylsulfonyl, d-C4alkoxycarbonyl, phenoxy, naphtoxy, phenylamino, benzoyloxy or phenylsulfonyloxy; or a compound of the formula XXV
in which R^ is hydrogen, C alkyl, d-C haloalkyl, C
2-C
4alkenyl, C
2-C alkynyl or d-C
4alkoxy- CrC alkyl, R
135 is hydrogen, halogen, d-C alkyl, d-C
4haloalkyl or C C
4alkoxy and R
36is hydrogen, halogen, d-C
4alkyl, d-C haloalkyl or d-C
4alkoxy, with the proviso that Rι
35 and R
136 are not simultaneously hydrogen.
The selective-herbicidal composition according to the invention preferably comprises, as herbicide-antagonistically effective amount, either a compound of the formula X
in which R
37 is hydrogen, C C
8alkyl or d-C
6alkoxy- or C
3-C
6alkenyloxy-substituted d- C
8alkyl; and X
6 is hydrogen or chlorine; or a compound of the formula XI
E is nitrogen or methine; R38 is -CCI3, phenyl or halogen-substituted phenyl;
R39 and R40 independently of one another are hydrogen or halogen; and R4ι is d-C4alkyl; or a compound of the formula XII
in which R t and R
45 independently of one another are hydrogen or halogen and R
46, R
47 and R
48 independently of one another are d-C
4alkyl.
The abovementioned preferences for the compounds of the formula I also apply to mixtures of the compounds of the formula I with safeners of the formulae X to XVIII. Preferred compositions according to the invention comprise a safener selected from the group consisting of the formula Xa
the formula Xb
Other preferred compounds of the formulae X, XI and XII are also listed in Tables 9, 10 and 11.
Table 9: Compounds of the formula X:
Comp. No. X6 R37
9.01 Cl -CH(CH3)-CBHI I-Π
9.02 Cl -CH(CH3)-CH2OCH2CH=CH2
9.03 Cl H
9.04 Cl C4H9-n
Preferred compounds of the formula XI are listed in Table 10 below.
Table 10: Compounds of the formula XI:
Comp. No. 1 R: 38 ^3 399 R π,4o
10.01 CH3 phenyl 2-CI H CH 10.02 CH3 phenyl 2-CI 4-CI CH 10.03 CH3 phenyl 2-F H CH 10.04 CH3 2-chlorophenyl 2-F H CH 10.05 C2Hs CCI3 2-CI 4-CI N 10.06 CH3 phenyl 2-CI 4-CF3 N 10.07 CH3 phenyl 2-CI 4-CF3 N
Preferred compounds of the formula XII are listed in Table 11 below.
Table 11 : Compounds of the formula XII:
Comp. No. R46 ^47 "»48 R44 " 5
11.01 CH3 CH3 CH3 2-CI 4-CI
11.02 CH3 C2H5 CH3 2-CI 4-CI
11.03 CH3 C2H5 C2H5 2-CI 4-CI
Preferred compounds of the formula XIII are listed in Table 12 below as compounds of the formula Xllla:
Table 12: Compounds of the formula Xllla:
Comp. No. 151
Preferred compounds of the formula XIV are listed in Table 13 below:
Table 13: Compounds of the formula XIV:
Comp. No. R 56 157 R56+R57
13.001 CH2=CHCH2 CH2=CHCH2
H3C CH,
13.002
CH,
13.003 CH X, CH,
Preferred compounds of the formula XV are listed in Table 14 below:
Table 14: Compounds of the formula XV:
14.01 H CN 14.02 Cl CF3
Preferred compounds of the formula XVI are listed in Table 15 below:
Table 15: Compounds of the formula XVI:
15.01 H
15.02 CH3
Preferred compounds of the formula XVII are listed in Table 16 below as compounds of the formula XVIIa:
Table 16: Compounds of the formula XVIIa
Comp. R82 z. V
No.
16.001 H H c''CH2 C = C \ s c 0 H2
16.002 H C=CH /C00CH3
VCHz
16.005 H C=CH /∞OCHg CH2
VCH*
16.007 H C=CH ^∞∞Ha
16.008 H ;.CH
C=CH
16.010 H C=CH ✓C00CH 3 NCH3
VCH*
Preferred compounds of the formula XVII are listed in Table 17 below as compounds of the formula XVIIb:
Table 17: Compounds of the formula XVIIb
R82 X) Cz>=o (XVIIb)
Comp. u Rβ2 z.
No.
17.001 O H /COOCH3
C=CH CH- O'
17.003 O 5-CI CCOCH3
C=CH
.CH;, o
17.004 CH2 H ^COOCHg
C=CH
,CH. 0
17.006 CH2 H C C==CCHH s∞∞Α \ .CH2
17.008 NH 5-CI C=CH s∞∞
VCH*
17.012 NCH3 H C C==CCHH ∞0*:
VCH*
Preferred compounds of the formula XVII are listed in Table 18 below as compounds of the formula XVIIc:
Table 18: Compounds of the formula XVIIc
R82
/ u -
(V> r (XVIIc)
X w1
Comp. U V r W! z, Rβ2
No.
18.002 O C=O 1 C=CH ^∞OCHs CH2 H
V VC""H-
18.005 CH2 CH2 1 C=CH s∞∞^s C=O H
VCH*
18.006 CH2 CH2 1 c=0 H
18.007 NCH
3 C=O 1 CH
2 H
Preferred compounds of the formula XVII are listed in Table 19 below as compounds of the formula XVIId:
Table 19: Compounds of the formula XVIId
Comp. Rβ2 W,
No.
19.001 6-CI C=CH / COOCH,
VCH*
19.002 6-CI CH, C=CH I
0 COOCH3
Preferred compounds of the formula XVIII are listed in Table 20 below:
Table 20: Compounds of the formula XVIII
(XVIII),
Comp. No. 1103 Ri M πi05 i06
20.01 CH3 H cyclopropyl H
20.02 CH3 C2H5 cyclopropyl H
20.03 CH3 cyclopropyl C2Hδ H
20.04 CH3 CH3 H H
20.05 CH3 CH3 cyclopropyl H
20.06 CH3 OCH3 OCH3 H
20.09 CH3 CH3 CH3 H
20.10 C2H5 CH3 CH3 H
20.11 C2Hδ OCH3 OCH3 H
20.12 H OCH3 OCH3 H
20.13 H CH3 CH3 H
20.14 C2Hδ H H CH3
20.15 H H H CH3
20.16 CH3 H H CH3
20.17 CH3 CH3 H CH3
The invention also relates to a method for the selective control of weeds in crops of useful plants which comprises treating the useful plants, their seeds or seedlings or the area on which they are cultivated jointly or separately with a herbicidally effective amount of the herbicide of the formula I and a herbicide-antagonistically effective amount of the safener of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII.
Crop plants which can be protected against the damaging effect of the abovementioned herbicides by the safeners of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII are, in particular, cereals, cotton, soya, sugarbeet, sugarcane, plantings, rapeseed, maize and rice, very particularly maize and cereals. Crops are to be understood as including those which have been rendered tolerant towards herbicides or classes of herbicides by conventional breeding methods or genetical engineering methods.
The weeds to be controlled can be both monocotyledonous and dicotyledonous weeds, for example the monocotyledonous weeds Avena, Agrostis, Phalaris, Lolium, Bromus, Alopecurus, Setaria, Digitaria Brachiaria, Echinochloa, Panicum, Sorghum hal./bic, Rottboellia, Cyperus, Brachiaria, Scirpus, Monochoria, Sagittaria, and Stellaria and the dicotyledonous weeds Sinapis, Chenopodium, Gaiium, Viola, Veronica, Matricaria, Papaver, Solanum, Abutilon, Sida, Xanthium, Amaranthus, Ipomoea and Chrysanthemum.
Areas under cultivation are the areas on which the crop plants are already growing, or on which the seeds of these crop plants have been sown, and also the soils which are intended to be cultivated with these crop plants.
Depending on the intended use, a safener of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII can be employed for pretreating the seeds of the crop plant (dressing of the seeds or the seedlings), or it can be worked into the soil before or after seeding. However, it can also be applied on its own or together with the herbicide after the plants have emerged. Thus, the treatment of the plants or the seeds with the safener can, in principle, be carried out independently of when the herbicide is applied. However, the plant can also be treated by simultaneous application of herbicide and safener (for example as tank mix). The application rate of safener to herbicide to be applied depends essentially on the type of application. In a field treatment which is carried out either by using a tank mix of a combination of safener and herbicide or by separate application of safener and herbicide, the ratio of herbicide to safener is as a rule from 100:1 to 1 :10, preferably from 20:1 to 1 :1. As a rule, 0.001 to 1.0 kg of safener/ha, preferably 0.001 to 0.25 kg of safener/ha are applied in the field treatment.
The application rates of herbicide are as a rule between 0.001 and 2 kg/ha, but preferably between 0.005 to 0.5 kg/ha.
The compositions according to the invention are suitable for all application methods which are customary in agriculture, for example pre-emergence application, postemergence application and seed dressing.
For seed dressing, generally 0.001 to 10 g of safener/kg of seed, preferably 0.05 to 2 g of safener/kg of seed, are applied. If the safener is applied in liquid form while swelling the seeds shortly before seeding, it is advantageous to employ safener solutions which comprise the active compound in a concentration of from 1 to 10000, preferably from 100 to 1000, ppm.
For application, the safeners of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII or combinations of these safeners with the herbicides of the formula I are advantageously processed together with auxiliaries conventionally used in the art of formulation, for example to give emulsion concentrates, spreadable pastes, directly sprayable or dilutable
solutions, dilute emulsions, wettable powders, soluble powders, dusts, granules or microcapsules.
Such formulations are described, for example, in WO 97/34485 on pages 9 to 13. The formulations are prepared in a known manner, for example by intimate mixing and/or grinding of the active compounds with liquid or solid formulation auxiliaries, for example solvents or solid carriers. Surface-active compounds (surfactants) can furthermore additionally be used during preparation of the formulations. Solvents and solid carriers which are suitable for this purpose are mentioned, for example, in WO 97/34485 on page 6.
Suitable surface-active compounds are, depending on the nature of the active compound of the formula I to be formulated, nonionic, cationic and/or anionic surfactants and surfactant mixtures having good emulsifying, dispersing and wetting properties. Examples of suitable anionic, nonionic and cationic surfactants are listed, for example, in WO 97/34485 on pages 7 and 8. The surfactants conventionally used in the art of formulation and which can also be used in the preparation of the herbicidal compositions according to the invention are described, inter alia, in "Mc Cutcheon's Detergents and Emulsifiers Annual", MC Publishing Corp., Ridgewood New Jersey, 1981 , Stache, H., "Tensid-Taschenbuch" [Surfactant handbook], Carl Hanser Verlag, Munich/Vienna, 1981 and M. and J. Ash, "Encyclopedia of Surfactants", Vol Mil, Chemical Publishing Co., New York, 1980-81.
The herbicidal formulations as a rule comprise 0.1 to 99% by weight, in particular 0.1 to 95% by weight, of the active compound mixture of the compound of the formula I with the compounds of the formulae X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII, 1 to 99.9% by weight of a solid or liquid formulation auxiliary and 0 to 25% by weight, in particular 0.1 to 25% by weight, of a surfactant. While concentrated compositions are usually preferred as commercial goods, the end user as a rule uses dilute compositions.
The compositions can also comprise further additives, such as stabilizers, for example epoxidized or non-epoxidized vegetable oils (epoxidized coconut oil, rapeseed oil or soya oil), defoamers, for example silicone oil, preservatives, viscosity regulators, binders, tackifiers and fertilizers or other active substances. For using safeners of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII or compositions comprising them to protect crop plants against damaging effects of herbicides of the formula I, various methods and techniques are suitable, for example the following:
i) Seed dressing a) Dressing the seeds with an active compound of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII formulated as a wettable powder by shaking in a vessel until even distribution on the surface of the seeds is achieved (dry dressing). Here, approximately 1 to 500 g of active compound of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII (4 g to 2 kg of wettable powder) are employed per 100 kg of seed. b) Dressing the seeds using an emulsion concentrate of the active compound of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII according to method a) (wet dressing). c) Dressing by dipping the seeds for 1 to 72 hours into a liquor containing 1-1000 ppm of active compound of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII, with or without subsequent drying of the seeds (dip dressing).
Seed dressing or the treatment of the germinated seedling are the naturally preferred application methods, since the treatment with active compound is completely directed at the target culture. As a rule, 1 to 1000 g of antidote, preferably 5 to 250 g of antidote, are employed per 100 kg of seed, but, depending on the method, which also permits the addition of other active compounds or micronutrients, it is possible to deviate above or below the stated limit concentrations (repeat dressing).
ii) Application as tank mix
A liquid preparation of a mixture of antidote and herbicide (mutual ratio between 10:1 and 1:100) is employed, the application rate of herbicide being from 0.005 to 5.0 kg per hectare. Such tank mixes are applied before or after seeding.
iii) Application in the seed farrow
The active compound of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII is applied into the open seeded seed farrow as an emulsion concentrate, a wettable powder or as granules. After the seed farrow has been covered, the herbicide is applied in a customary manner by the pre-emergence method.
iv) Controlled release of active compound
The active compound of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII is absorbed in solution onto mineral granule carriers or polymerized granules (urea/formaldehyde) and dried. If appropriate, a coating which allows the active compound to be released in metered form over a certain period of time can be applied (coated granules).
The efficacy of herbicidal and plant-growth-inhibiting compositions according to the invention comprising a herbicidally effective amount of a compound of the formula I and a herbicide-antagonistically effective amount of a compound of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII can be increased by addition of spray tank adjuvants. These adjuvants may be, for example, nonionic surfactants, mixtures of nonionic surfactants, mixtures of anionic surfactants with nonionic surfactants, cationic surfactants, organosiiicon surfactants, mineral oil derivatives with or without surfactants, vegetable oil derivatives with or without addition of surfactants, alkylated derivatives of oils of vegetable or mineral origin with or without surfactants, fish oils and other oils of animal nature and their alkyl derivatives with or without surfactants, natural higher fatty acids, preferably having 8 to 28 carbon atoms, and their alkyl ester derivatives, organic acids which contain an aromatic ring system and one or more carboxylic esters, and their alkyl derivatives, furthermore suspensions of polymers of vinyl acetate or copolymers of vinyl acetate/acrylic esters. Mixtures of individual adjuvants with one another and in combination with organic solvents may further increase the effect.
Suitable nonionic surfactants are, for example, polyglycol ether derivatives of aliphatic or cycloaliphatic alcohols, saturated or unsaturated fatty acids and alkylphenols, preferably those which may contain 3 to 30 glycol ether groups and 8 to 20 carbon atoms in the (aliphatic) hydrocarbon radical and 6 to 18 carbon atoms in the alkyl radical of the alkylphenols.
Other suitable nonionic surfactants are the water-soluble polyethylene oxide adducts on polypropylene glycol, ethylenediaminopolypropyiene glycol and alkylpolypropylene glycol preferably having 1 to 10 carbon atoms in the alkyl chain which preferably contain 20 to 250 ethylene glycol ether groups and 10 to 100 propylene glycol ether groups. The abovementioned compounds generally contain 1 to 5 ethylene glycol units per propylene glycol unit.
Other examples of nonionic surfactants which may be mentioned are nonyiphenoipolyethoxyethanols, castor oil polyglycol ethers, polypropylene/polyethylene oxide adducts, tributylphenoxypolyethoxyethanol, polyethylene glycol and octylphenoxypolyethoxyethanol.
Also suitable are fatty esters of polyoxyethylene sorbitan, for example polyoxyethylene sorbitan trioleate.
Preferred anionic surfactants are, in particular, alkyl sulfates, alkyl sulfonates, alkylaryl sulfonates, alkylated phosphoric acids and their ethoxylated derivatives. The alkyl radicals usually contain 8 to 24 carbon atoms.
Preferred nonionic surfactants are known under the following trade names:
Polyoxyethylene cocoalkylamine (for example AMIET® 105 (Kao Co.)), polyoxyethylene oleylamine (for example AMIET® 415 (Kao Co.)), nonylphenolpolyethoxyethanols, polyoxyethylene stearylamine (for example AMIET® 320 (Kao Co.)), N- polyethoxyethylamines (for example GENAMIN® (Hoechst AG)), N,N,N',N'- tetra(polyethoxypolypropoxyethyl)ethylene diamines (for example TERRONIL® and TETRONICβ (BASF Wyandotte Corp.)), BRIJ* (Atlas Chemicals), ETHYLAN® CD and ETHYLAN* D (Diamond Shamrock), GENAPOL® C, GENAPOL® O, GENAPOL® S and GENAPOL® X080 (Hoechst AG), EMULGEN® 104P, EMULGEN® 109P and EMULGEN® 408 (Kao Co.); DISTY® 125 (Geronazzo), SOPROPHOR* CY 18 (Rhone Poulenc S.A.); NONISOr (Ciba-Geigy), MRYJβ (ICI); TWEEN® (ICI); EMULSOGEN® (Hoechst AG); AMIDOX® (Stephan Chemical Co.), ETHOMID® (Armak Co.); PLURONIC® (BASF Wyandotte Corp.), SOPROPHOR8 461 P (Rhone Poulenc S.A.), SOPROPHOR® 496/P (Rhone Poulenc S.A.), ANTAROX FM-63 (Rhone Poulenc S.A.), SLYGARD 309 (Dow Corning), SILWET 408, SILWET L-7607N (Osi-Specialities).
The cationic surfactants are primarily quaternary ammonium salts which contain, as N- substituents, at least one alkyl radical having 8 to 22 C atoms and, as further substituents, lower nonhalogenated or halogenated alkyl, benzyl or lower hydroxyalkyl radicals. The salts are preferably present as halides, methyl sulfates or ethyl sulfates, for example stearyltrimethylammonium chloride or benzyldi(2-chioroethyl)ethylammonium bromide.
The oils used are either of mineral or natural origin. The natural oils may additionally be of animal or vegetable origin. In the case of animal oils, preference is given, in particular, to derivatives of beef tallow, but fish oils (for example sardine oil) and derivatives thereof are also used. Vegetable oils are mainly seed oils of various origin. Examples of particularly preferred vegetable oils which may be mentioned are coconut, rapeseed or sunflower oils and derivatives thereof.
Surfactants, oils, in particlar vegetable oils, derivatives thereof such as alkylated fatty acids and mixtures thereof, for example with preferably anionic surfactants such as alkylated phosphoric acids, alkyl sulfates and alkylaryl sulfonates and higher fatty acids which are customary in formulation and adjuvant technique and which can also be employed in the compositions according to the invention and spray tank solutions thereof are described, inter alia, in "Mc Cutcheon's Detergents and Emulsifiers Annual", MC Publishing Corp., Ridgewood New Jersey, 1998, Stache, H., Tensid-Taschenbuch" [Surfactant handbook], Carl Hanser Verlag, Munich/Vienna, 1990, M. and J. Ash, "Encyclopedia of Surfactants", Vol. I-IV, Chemical Publishing Co., New York, 1981-89, G. Kapusta, "A Compendium of Herbicide Adjuvants", Southern Illinois Univ., 1998, L. Thomson Harvey, "A Guide to Agricultural Spray Adjuvants Used in the United States", Thomson Pubns., 1992.
In particular, preferred formulations have the following compositions: (% = per cent by weight)
Emulsifiable concentrates: active compound mixture: 1 to 90%, preferably 5 to 20% surface-active agent: 1 to 30%, preferably 10 to 20% liquid carrier: 5 to 94%, preferably 70 to 85%
Dusts: active compound mixture: 0.1 to 10%, preferably 0.1 to 5% solid carrier: 99.9 to 90%, preferably 99.9 to 99%
Suspension concentrates: active compound mixture: 5 to 75%, preferably 10 to 50% water: 94 to 24%, preferably 88 to 30% surface-active agent: 1 to 40%, preferably 2 to 30%
Wettable powders: active compound mixture: 0.5 to 90%, preferably 1 to 80% surface-active agent: 0.5 to 20%, preferably 1 to 15% solid carrier material: 5 to 95%, preferably 15 to 90%
Granules: active compound mixture: 0.1 to 30%, preferably 0.1 to 15% solid carrier: 99.5 to 70%, preferably 97 to 85%
The following examples illustrate the invention in more detail, without limiting it.
Formulation examples for mixtures of herbicides of the formula I and safeners of the formula X. XI. XII. XIII. XIV. XV, XVI, XVII or XVIII (% = per cent bv weight)
F1. Emulsion concentrates a) b) c) d)
Active compound mixture 5% 10% 25% 50%
Ca dodecyibenzenesulfonate 6% 8% 6% 8%
Castor oil polyglycol ether 4% . 4% 4%
(36 mol of EO)
Octylphenol polyglycol ether - 4% - 2%
(7-8 mol of EO)
Cyclohexanone - - 10% 20% Ό
Arom. hydrocarbon 85% 78% 55% 16% o mixture C9-C12
Emulsions of any desired concentration can be prepared from such concentrates by dilution with water.
F2. Solutions a) b) c) d)
Active compound mixture 5% 10% 50% 90%
1 -Methoxy-3-(3-methoxy- propoxy)propane - 20% 20% -
Polyethylene glycol MW 400 20% 10% - -
N-Methyl-2-pyrrolidone - . 30% 10%
Arom. hydrocarbon 75% 60% mixture C9-d2
The solutions are suitable for use in the form of tiny droplets
F3. Wettable powders a) b) c) d)
Active compound mixture 5% 25% 50% 80%
Sodium lignosulfonate 4% - 3% -
Sodium laurylsulfate 2 % 3 % - 4 %
Sodium diisobutylnaphthalene- 6% 5% 6% sulfonate
Octylphenol polyglycol ether - 1 % 2%
(7-8 mol of EO)
Finely divided silica 1% 3% 5% 10%
Kaolin 88% 62% 35%
The active compound is thoroughly mixed with the additives and ground well in a suitable mill. This gives spray powders which can be diluted with water to give suspensions of any desired concentration.
F4. Coated granules a) b) c)
Active compound mixture 0.1% 5% 15%
Finely divided silica 0.9% 2% 2%
Inorg. carrier material 99.0% 93% 83%
( E 0J - 1 mm), for example CaCO3 or SiO2
The active compound is dissolved in methylene chloride, the solution is sprayed onto the carrier and the solvent is subsequently evaporated off under reduced pressure.
F5. Coated granules a) b) C)
Active compound mixture 0.1 % 5% 15%
Polyethylene glycol MW 200 1.0% 2% 3%
Finely divided silica 0.9% 1% 2%
Inorg. carrier material 98.0% 92% 80%
( E 0.1 - 1 mm), for example CaCO3 or SiO2
In a mixer, the finely ground active compound is applied evenly to the carrier material moistened with polyethylene glycol. In this manner, dust-free coated granules are obtained.
F6. Extruder granules a) b) c) d)
Active compound mixture 0.1% 3% 5% 15%
Sodium lignosulfonate 1.5% 2% 3% 4%
Carboxymethylcellulose 1.4% 2% 2% 2%
Kaolin 97.0% 93% 90% 79%
The active compound is mixed with the additives, ground and moistened with water. This mixture is extruded and subsequently dried in a stream of air.
F7. Dusts a) b) c)
Active compound mixture 0.1% 1% 5%
Talc mixture 39.9% 49% 35%
Kaolin 60.0% 50% 60%
Ready-to-use dusts are obtained by mixing the active compound with the carriers and grinding the mixture in a suitable mill.
F8. Suspension concentrates a) b) c) d)
Active compound mixture 3% 10% 25% 50%
Ethylene glycol 5% 5% 5% 5% Nonylphenol polyglycol ether 1% 2%
(15 mol of EO)
Sodium lignosulfonate 3% 3% 4% 5%
Carboxymethylcellulose 1% 1% 1% 1%
37% aqueous formaldehyde 0.2% 0.2% 0.2% 0.2% solution
Silicone oil emulsion 0.8% 0.8% 0.8% 0.8%
Water 87% 79% 62% 38%
The finely ground active compound is intimately mixed with the additives. This gives a suspension concentrate, from which suspensions of any desired concentration can be prepared by dilution with water.
It is often more useful to formulate the active compound of the formula I and the mixing partner of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII individually and then to mix them shortly before application in the applicator in the desired mixing ratio as 'lank mix" in water.
The capability of the safeners of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII to protect crop plants against the phytotoxic action of herbicides of the formula I is illustrated in the examples below.
Biological Example 1 : Safening action
Under greenhouse conditions, the test plants are grown in plastic pots until they have reached the 4-leaf-stage. In this stage, both the herbicide on its own and the mixtures of the herbicide with the test substances to be tested as safeners are applied to the test plants. The application is carried out as an aqueous suspension of the test substances, prepared from a 25% wettable powder (Example F3, b)), using 500 I of water/ha. 3 weeks after the application, the phytotoxic effect of the herbicide on the crop plants, for example maize and cereals, is evaluated using a percentage scale. 100% means that the test plant has died, 0% means no phytotoxic effect.
The results obtained in this test show that the damage to the crop plants caused by the herbicide of the formula I can be considerably reduced using the compounds of the formula X, XI, XII, XIII, XIV, XV, XVI, XVII or XVIII.
The same results are obtained when the mixtures are formulated in accordance with Examples F1 , F2 and F4 to F8.
Biological Example 2: Safening of the compound no. 1.032
Under greenhouse conditions, the test plants are grown in plastic pots until they have reached the 4-leaf-stage. In this stage, both the herbicide on its own and the mixtures of the herbicide with the test substances to be tested as safeners are applied to the test plants. The application is carried out as an aqueous suspension of the test substances, prepared from an emulsion concentrate (EC 100; Example F1) of the herbicides and an emulsion concentrate (EC 100; Example F1) of the safeners (exceptions: the safeners no. 10.05 and 20.17, which are employed as a 25% wettable powder (Example F3, b)). 9 days after the application, the phytotoxic effect of the herbicide on summer wheat and durum wheat is evaluated using a percentage scale (100%: test plant has died; 0%: no phytotoxic effect).
Table S2: Safening of the compound no. 1.032
Biological Example 3: Safening of the compound no. 1.025
Under greenhouse conditions, the test plants are grown in plastic pots until they have reached the 4-leaf-stage. In this stage, both the herbicide on its own and the mixtures of the herbicide with the test substances to be tested as safeners are applied to the test plants. The application is carried out as an aqueous suspension of the test substances, prepared from an emulsion concentrate (EC 100; Example F1 ) of the herbicides and an emulsion concentrate (EC 100; Example F1) of the safeners (exceptions: the safeners no. 10.05 and 20.17, which are employed as a 25% wettable powder (Example F3, b)). 11 days after the application, the phytotoxic effect of the herbicide on summer wheat and durum wheat is evaluated using a percentage scale (100%: test plant has died; 0%: no phytotoxic effect).
Table S3: Safening of the compound no. 1.025
Biological Example 4: Safening of the compound no. 1.007
Under greenhouse conditions, the test plants are grown in plastic pots until they have reached the 4-leaf-stage. In this stage, both the herbicide on its own and the mixtures of the herbicide with the test substances to be tested as safeners are applied to the test plants. The application is carried out as an aqueous suspension of the test substances, prepared from an emulsion concentrate (EC 100; Example F1) of the herbicides and an emulsion concentrate (EC 100; Example F1) of the safeners (exceptions: the safeners no. 10.05 and 20.17, which are employed as a 25% wettable powder (Example F3, b)). 9 days after the application, the phytotoxic effect of the herbicide on summer wheat and durum wheat is evaluated using a percentage scale (100%: test plant has died; 0%: no phytotoxic effect).
Table S4: Safening of the compound no. 1.007
The following examples illustrate the invention in more detail without limiting it.
Preparation Examples: Example H1 : Preparation of:
Over a period of one hour, a solution of 177.6 g of methanesulfonyl chloride and 400 ml of diethyl ether is added dropwise to a solution of 80.6 g (0.76 mol) of diethylene glycol and 159.9 g (1.58 mol) of triethylamine in 1500 ml of diethyl ether which had been cooled to -10°C, and during the addition, the temperature is kept below 5°C. The mixture is stirred at a temperature of 0°C for 30 minutes, and cooling is then removed. After 2 hours, at a temperature of 20°C, 12 ml of triethylamine and 12 ml of methanesulfonyl chloride are added, and stirring is continued for another 4 hours. The resulting white suspension is subsequently transferred onto a suction filter, and the residue is washed twice with 300 ml of diethyl ether. The filter cake is taken up in 2000 ml of ethyl acetate, and the suspension is stirred at room temperature for 30 minutes and then filtered again. The resulting filtrate is concentrated and the residue is used for the next reaction without any further purification. 216.5 g of the desired crude product (1) are obtained in the form of white crystals.
Example H2:
(1) (2) (3)
A solution of 68.78 g (0.30 mol) of (2) in 140 ml of dimethylformamide is added dropwise for a period of 30 minutes to a suspension of 23.9 g (0.60 mol) of 60% sodium hydride in 500 ml of dimethylformamide which had been cooled to 5°C. Cooling is removed and the reaction mixture is stirred until it has reached a temperature of 20°C. The mixture is subsequently briefly heated to a temperature of from 30 to 40°C to bring the evolution of hydrogen to completion. After cooling to a temperature of from 0 to 5°C, a solution of 80 g (0.305 mol) of (1) in 160 ml of dimethylformamide is added dropwise over a period of
30 minutes, during which the temperature is kept at from 0 to 5°C. Cooling is removed and the reaction mixture is stirred at room temperature for 3 hours and at approximately 40°C for 45 minutes and then added to a mixture of saturated ammonium chloride solution, ice and tert-butyl methyl ether. The phases are separated and the organic phase is subsequently washed with water (2x). The organic phase is dried with sodium sulfate and evaporated, and the residue is dried further at a temperature of 40°C and under reduced pressure, giving 92.2 g of (3) in the form of a slightly yellow oil. The crude product is employed for the next reaction without any further purification.
Example H3:
(3) (4)
160.5 ml of a 33% solution of hydrogen bromide in glacial acetic acid are added dropwise over a period of 30 minutes to a solution of 92.2 g (0.305 mol) of (3) in 1200 ml of diethyl ether which had been cooled to 0°C. Cooling is removed and the mixture is subsequently stirred at 20°C for 22 hours and then under reflux for 27 hours, the resulting white suspension is transferred onto a suction filter and washed with diethyl ether, and the filter residue is subsequently dried over P2O5 under reduced pressure at a temperature of from 50 to 60°C. The product (4) is obtained in a yield of 52.9 g in the form of a white solid.
Example H4:
(4) (5) (6)
71.8 g (0.71 mol) of triethylamine are added to a suspension of 40 g (0J5 mol) of (4) in 1000 ml of xylene, and the mixture is degassed (4 x vacuum/argon). The yellow suspension
is subsequently heated to a temperature of 60°C and stirred for 3 hours. 42.5 g (0.15 mol) of (5) are then added, and the mixture is heated to a bath temperature of 150°C to distil off excess triethylamine and the ethanol which is formed. After 3 hours, the reaction mixture is cooled to a temperature of 40°C and added to 500 ml of an ice/water mixture. Using 100 ml of aqueous 1 N sodium hydroxide solution, the reaction mixture is made alkaline and the aqueous phase (which contains the product) is washed twice with ethyl acetate. The organic phase is reextracted twice using aqueous 1 N sodium hydroxide solution, the aqueous phases are combined, the remaining xylene is distilled off and the combined aquoeus phases are adjusted to pH 2-3 using 4N HCI with cooling. The product which precipitates is transferred onto a suction filter, the filter cake is washed with water and briefly with hexane and is subsequently dried under reduced pressure at a temperature of 60°C over P2O5. This gives 34.6 g of (6) as a slightly beige solid of melting point 242-244°C (decomp.).
Example H5:
A catalytic amount of 4-dimethylaminopyridine is added to a solution of 3 g (10.4 mmol) of (6) and 1.6 g (15.8 mmol) of triethylamine in 100 ml of tetrahydrofuran which had been cooled to a temperature of 0°C. 1.57 g (13.0 mmol) of pivaloyl chloride are subsequently added dropwise. The mixture is stirred at a temperature of 0°C for 30 minutes, cooling is removed, and the mixture is stirred for a further 60 minutes. The reaction mixture is subsequently poured into saturated aqueous sodium chloride solution, and the organic phase is separated off. The organic phase is dried over magnesium sulfate, filtered off and concentrated. Chromatographic purification and recrystailization from diethyl ether gives 2.94 g of (7) of melting point 135-136°C.
Example H6: Preparation of
First 36.7 g (0.116 mol) of tributylvinylstannane and then 2 g of tetrakis(triphenylphosphine)palladium are added to a solution of 20 g of dimethyl 2-(2,6- dibromo-4-methyl-phenyl)malonate (52.6 mmol) in 400 ml of toluene (3 x degassed, vacuum/argon). The reaction mixture is then stirred at a temperature of from 90 to 95°C for 9 hours. Filtration through Hyflo and concentration on a rotary evaporator gives, after chromatographic purification, 15.3 g of (8) in the form of a yellow oil which is used for the next reaction without any further purification.
Example H7:
(8) (9)
At a temperature of from 20 to 25°C, 15.2 g of the compound (8) obtained according to Example H6 are hydrogenated with hydrogen over a palladium catalyst (using carbon as carrier, 7 g of 5% Pd/C) in 160 ml of tetrahydrofuran. After the hydrogenation has ended, the product is filtered through Hyflo, and the resulting filtrate is concentrated on a rotary evaporator. This gives 13.7 g of (9) in the form of yellow crystals of melting point 47 - 49°C.
Example H8:
By the method of Preparation Example H4, but starting from 4.8 g (17.2 mmol) of the malonate (9), 4.56 g of the compound (10) are obtained as a solid of melting point 188-190°C.
Example H9:
A catalytic amount of 4-dimethylaminopyridine is added to a solution of 1 g (3.2 mmol) of (10) and 0.65 g (6.4 mmol) of triethylamine in 30 ml of tetrahydrofuran which had been cooled to a temperature of 0°C. 0.49 g (4.1 mmol) of pivaloyl chloride is subsequently added dropwise. The mixture is stirred at a temperature of 0°C for 10 minutes, cooling is removed, and stirring is then continued for a further 90 minutes. The reaction mixture is poured into saturated aqueous sodium chloride solution and diluted with tert-butyl methyl ether, and the organic phase is separated off. The organic phase is dried over magnesium sulfate, filtered off and concentrated. Chromatographic purification gives 1.07 g of (11) in the form of a white solid of melting point 122-123°C.
Example H10:
(12) (13)
67.8 g (0.59 mol) of methanesulfonyl chloride are added dropwise to a solution of 37.1 g (0.28 mol) of c/s-2,5-bis(hydroxymethyl)tetrahydrofuran (12) and 65.3 g (0.65 mol) of triethylamine in 400 ml of methylene chloride which had been cooled to 0-3°C, during which the temperature is kept below 7°C. The mixture is subsequently stirred at a temperature of 20°C overnight. The resulting white suspension is transferred onto a suction filter, the residue is washed with methylene chloride and the filtrate is concentrated. The residue is taken up in ethyl acetate, washed with water (2x) and with saturated aqueous sodium chloride solution (1x), dried (Na2SO ) and concentrated. This gives 72.7 g of the dimesylate compound (13) as a crude oil which is employed for the next reaction without any further purification.
The starting material (12) is known from the literature: see, for example, K. Naemura et al., Tetrahedron Asymmetry 1993, 4, 911-918.
Example H11 : (13) (14)
By the method of Preparation Example H2, but starting from 21.0 g (0.53 mol) of 60% NaH, 58.4 g (0.25 mol) of (2) and 72.5 g (0.25 mol) of dimesylate (13) in a total of 840 ml of dimethylformamide, (14) is obtained as a crude brown oil. Chromatographic purification gives 53.7 g of the pure compound (14) as a white solid of melting point 81 - 83°C.
(15)
Example H12: (14)
By the method of Preparation Example H3, but starting from 53.5 g (0.16 mol) of (14) in
800 ml of diethyl ether and 90 ml of a 33% solution of hydrogen bromide in cone, acetic acid, 36.5 g of the bicyclic hydrazine (15) are obtained as a solid of melting point 262 -
264°C.
Example H13:
By the method of Preparation Example H4, but starting from 0.105 mol of the malonate (9) and 30.4 g (0.105 mol) of the hydrazine (15), 29.7 g of the compound (16) are obtained as a solid of melting point 287°C.
Example H14:
By the method of Preparation Example H9, but starting from 1.1 g (3.2 mmol) of (16), 0.83 g of the pivaloyl ester (17) is obtained as a solid of melting point 141-143°C.
Table 1 : Compounds of the formula le:
Comp. Ri R2 R3 G Phys. data
No.
1.001 CH3 CH3 CH3 H m.p. 245°C
1.002 CH3 CH3 CH3 C(O)C(CH3)3 m.p. 135- 136°C
1.003 CH3 CH3 CH3 C(O)OCH2CH3
1.004 CH2CH3 CH3 CH3 H m.p. 182- 185°C
1.005 CH2CH3 CH3 CH3 C(O)C(CH3)3 m.p. 110- 113°C
1.006 CH CH3 CH3 CH3 C(O)OCH2CH3
1.007 CH2CH3 CH3 CH2CH3 H m.p. 189- 191 °C
1.008 CH2CH3 CH3 CH2CH3 C(O)C(CH3)3 m.p. 122- 124°C
1.009 CH2CH3 CH3 CH2CH3 C(O)OCH2CH3 m.p. 114- 116°C
1.010 CH=CH2 CH3 CH3 H m.p. 165- 170°C
1.011 CH=CH2 CH3 CH3 C(O)C(CH3)3 m.p. 111- 113°C
1.012 CH=CH2 CH3 CH2CH3 H
1.013 CH=CH2 CH3 CH=CH2 H
1.014 CH=CH2 CH3 CH=CH2 C(O)C(CH3)3
Comp. R2 R3 Phys. data
No.
1.015 C≡CH CH3 CH3 H m.p. 179- 184°C
1.016 C≡CH CH3 CH3 C(O)C(CH3)3 m.p. 109- 111°C
1.017 C≡CH CH3 CH3 C(O)OCH2CH3
1.018 C≡CH CH3 CH2CH3 H m.p. 189- 193°C
1.019 C≡CH CH3 CH2CH3 C(O)C(CH3)3
1.020 C≡CH CH3 CH2CH3 C(O)OCH2CH3
1.021 C=CH CH3 C≡CH H m.p. 300°C
1.022 C≡CH CH3 C≡CH C(O)C(CH3)3 m.p. 183- 185°C
1.023 C≡CH CH3 C≡CH C(O)OCH2CH3
1.024 C≡CH CH3 CH=CH2 H
1.025 C≡CCH3 CH3 CH3 H m.p. 179- 181°C
1.026 C=CCH3 CH3 CH3 C(O)C(CH3)3 m.p. 128- 129°C
1.027 C≡CCH3 CH3 CH3 C(O)OCH2CH3
1.028 C=CCH3 CH3 CH2CH3 H
1.029 C=CCH3 CH3 CH CH3 C(O)C(CH3)3
1.030 C≡CCH3 CH3 C=CCH3 H
1.031 C≡CCH3 CH3 C≡CCH3 C(O)C(CH3)3
1.032 CH2CH2CH3 CH3 CH3 H m.p. 136- 138°C
1 033 CH2CH2CH3 CH3 CH3 C(O)C(CH3)3 m.p. 65- 67°C
1.034 CH2CH2CH3 CH3 CH3 C(O)OCH2CH3
1.035 CH2CH2CH3 CH3 CH2CH3 H
1.036 CH2CH2CH3 CH3 CH2CH2CH3 H
Comp. Ri Phys. data No.
1.037 CH2CH2CH3 CH3 CH2CH2CH3 C(O)C(CH3)3
1.038 CH2CH2CH3 CH3 CH2CH2CH3 C(O)OCH2CH3
1.039 CH2CH2CH3 CH3 C≡CH H
1.040 CH(CH3)2 CH3 CH3 H m.p. 214- 216°C
1.041 CH(CH3)2 CH3 CH3 C(O)C(CH3)3 m.p. 148- 151°C
1.042 CH(CH3)2 CH3 CH2CH3 H
1.043 CH(CH3)2 CH3 C≡CH H
1.044 M CH3 CH3 H
1.045 M CH3 CH2CH3 H
1.046 M CH3 C≡CH H
1.047 CH2CH=CH CH3 CH3 H
1.048 CH2CH=CH2 CH3 CH2CH3 H
1.049 CH2CH=CH2 CH3 C≡CH H
1.052 N(CH2CH3)2 CH3 CH3 H
1.053 N(CH2CH3)2 CH3 CH2CH3 H
1.054 CH2OH CH3 CH3 H
1.055 CH2OCH3 CH3 CH3 H
1.056 CH2OC(CH3)3 CH3 CH3 H
1.057 CH3 CH2CH3 CH3 H
1.058 CH2CH3 CH2CH3 CH3 H
1.059 CH2CH3 CH2CH3 CH2CH3 H m.p. 185- 187°C
1.060 CH2CH3 CH2CH3 CH2CH3 C(O)C(CH3)3 m.p. 126 128°C
1.061 CH2CH3 CH2CH3 CH2CH3 C(O)OCH2CH3 m.p. 105
Comp. Ri Phys. data
No. 107°C
1.062 CH=CH2 CH2CH3 CH=CH2 H
1.063 C≡CH CH2CH3 C≡CH H
1.064 CH3 CH=CH2 CH3 H
1.065 CH2CH3 CH=CH2 CH CH3 H
1.066 CH2CH3 CH=CH2 CH3 H
1.067 CH2CH3 CH=CH2 CH3 C(O)C(CH3)3 m.p. 108- 110°C
1.068 C≡CH CH=CH2 C≡CH H
1.069 CH3 C≡CH CH3 H
1.070 CH CH3 C≡CH CH3 H m.p. 240- 243°C
1.071 CH2CH3 C≡CH CH3 C(O)C(CH3)3 m.p. 138- 140°C
1.072 CH CH3 C≡CH CH3 C(O)OCH2CH3
1.073 CH2CH3 C≡CH CH2CH3 H
1.074 CH CH3 C≡CH C≡CH H
1.075 C≡CH C≡CH C≡CH H
1.076 CH3 CH2CH=CH2 CH3 H
1.077 CH3 CH2CH=CH2 CH2CH3 H
1.078 CH3 CH3 Br H m.p. 234- 237°C
1.079 CH3 CH3 Br C(O)C(CH3)3 m.p. 76- 78°C
1.080 CH3 CH3 Br C(O)OCH2CH3
1.081 CH2CH3 CH3 Br H
1.082 C≡CH CH3 Br H
1.083 CH3 Br CH3 H m.p. 298 299°C
1.084 CH2CH3 Br CH3 H m.p. 261 263°C
-L -* _I. _«. -I -I -J. -J. --. _* _. O O O O O O O O O O O o o o o p o
-■• O O O O O O O O O O CO CD CO CO CO CD CO CD CO CD OO 00 00 00 00 3 o o co ' i cn oi ^ ιo -A θ co oo - j cn n 4^ o ιo -^ o D oo - i cn cn J o o o o o o o ro o o o o o o o o o o o o o ro ro ro o o o X X X X X X X X X X X X X X X X ^ o x o x o
M X ω X X X ω ω ro ro ω h ω o o o o o o o o o o ω X ω X X X ω X ω X o o ω X ω X ω X ω X X X o X
O o o o ro o — ro o o o o τι τ o ro or ro ω X i i — -> -• x — — x ι — o —o —o o I oI ro- ro - o I oI i - -
O I I I X X I I X X X X I I I I I I I o o I I o o Q O o o o o O o o o o
O o o
I I o I o ω ω I I o o
I I
Comp. Ri R2 R3 G Phys. dal
No.
1.112 OCH3 CH3 CH2CH3 C(O)OCH2CH3
1.113 OCH3 CH3 CH2CH2CH3 H
1.114 OCH3 CH3 C≡CH H
1.115 OCH3 CH3 Br H
1.116 OCH3 CH3 OCH3 H
1.117 C(O)CH3 CH3 CH3 H solid
1.118 C(O)CH3 CH3 CH CH3 H
1.119 CH3 C(O)CH3 CH2CH3 C(O)C(CH3)3 m.p. 163 165°C
1.120 CH3 CH2OH CH2CH3 H
1.121 CH3 CH3 CH3 SO2CH2CHCH2
1.122 CH3 CH3 CH3 SO2CH2CHCHCI
1.123 CH3 CH3 CH3 SO2CH2CHCHCH3
1.124 CH2CH3 CH3 CH2CH3 SO2CH2CHCH2
1.125 CH2CH3 CH3 CH2CH3 SO2CH2CHCHCI
1.126 CH2CH3 CH3 CH2CH3 SO2CH2CHCHCH3
Table 2: : Compounds of the formula If:
Comp. Ri R2 R3 G R2ι Phys. data
No.
2.001 CH3 CH3 CH3 H CH3
2.002 CH3 CH3 CH3 C(O)C(CH3)3 CH3
2.003 CH3 CH3 CH3 C(O)OCH2CH3 CH3
2.004 CH2CH3 CH3 CH3 H CH3
2.005 CH2CH3 CH3 CH2CH3 H CH3
2.006 CH2CH3 CH3 CH2CH3 C(O)C(CH3)3 CH3
Comp. Ri R2 R3 G R2ι Phys. data
No.
2.007 CH2CH3 CH3 CH2CH3 C(O)OCH2CH3 CH3
2.008 CH2CH3 CH3 Br H CH3
2.009 CH2CH3 CH3 Br C(O)C(CH3)3 CH3
2.010 CH2CH3 CH3 Br C(O)OCH2CH3 CH3
2.011 CH2CH3 CH2CH3 CH2CH3 H CH3
2.012 CH2CH3 CH2CH3 CH2CH3 C(O)C(CH3)3 CH3
2.013 CH2CH3 CH CH3 CH2CH3 C(O)OCH2CH3 CH3
2.014 C≡CH CH3 CH3 H CH3
2.015 C≡CH CH3 CH3 C(O)C(CH3)3 CH3
2.016 C≡CH CH3 CH3 C(O)OCH2CH3 CH3
2.017 C≡CH CH3 CH2CH3 H CH3
2.018 C≡CH CH3 CH2CH3 C(O)C(CH3)3 CH3
2.019 C≡CH CH3 CH2CH3 C(O)OCH2CH3 CH3
2.020 CH=CH2 CH3 CH=CH2 H CH3
2.021 C≡CH CH3 C≡CH H CH3
2.022 OCH3 CH3 CH2CH3 H CH3
2.023 OCH3 CH3 CH2CH3 C(O)C(CH3)3 CH3
2.024 OCH3 CH3 CH2CH3 C(O)OCH2CH3 CH3
2.025 OCH3 CH3 Br H CH3
2.026 OCH3 CH3 Br C(O)C(CH3)3 CH3
2.027 OCH3 CH3 Br C(O)OCH2CH3 CH3
2.028 OCH3 CH3 C≡CH H CH3
2.029 OCH3 CH3 C≡CH C(O)C(CH3)3 CH3
2.030 OCH3 CH3 C≡CH C(O)OCH2CH3 CH3
2.031 CH3 C≡CH CH3 H CH3
2.032 CH2CH3 C≡CH CH3 H CH3
Table 3: Compounds of the formula Iq:
CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO o o o o o o o o o o o o o o o o o o o o o o o o o o o
IO to IO IO IO IO o o o o o o o o o en 4^ CO IO o CO 00 en -s. CO IO o CO 00 - | cn cn CO IO 3
T3
O O O O o o o III o III o O O O O III o o ΪF o o ? o o III oHI Io o o o o o o o o o o o ro rIo rIo rIo roI iI i-oI rIo roI rIo cIo cI X I o cIo
I o I I o I I i ^ o o o o o o o o o o
I I I I I I I I I I I
o o o o o o o o o o o o o o o O O O O O O O O O O
I I ω I ω I I I ω I I I I I I I I I I I I I I I I I I I
Q. (D
0)
Comp. Ri R2 R3 G Rl9 Phys. data
No.
3.026 OCH3 CH3 Br C(O)C(CH3)3 CH3
3.027 OCH3 CH3 Br C(O)OCH2CH3 CH3
3.028 OCH3 CH3 C≡CH H CH3
3.029 OCH3 CH3 C≡CH C(O)C(CH3)3 CH3
3.030 OCH3 CH3 C≡CH C(O)OCH2CH3 CH3
3.031 CH3 C≡CH CH3 H CH3
3.032 CH2CH3 C≡CH CH3 H CH3
3.033 CH2CH3 CH3 CH CH3 H F
3.034 CH2CH3 CH3 CH2CH3 H Br
3.035 CH3 CH3 CH3 H Cl
3.036 CH3 CH3 CH3 C(O)C(CH3)3 Cl
3.037 CH3 CH3 CH3 C(O)OCH2CH3 Cl
3.038 CH2CH3 CH3 CH2CH3 H Cl
3.039 CH2CH3 CH3 CH2CH3 C(0)C(CH3)3 Cl
3.040 CH2CH3 CH3 CH2CH3 C(O)OCH2CH3 Cl
3.041 CH2CH3 CH2CH3 CH2CH3 H Cl
3.042 C≡CH CH3 CH3 H Cl
3.043 C≡CH CH3 C≡CH H Cl
3.044 CH3 C≡CH CH3 H Cl
Table 4: Compounds of the formula Ih:
Comp. Ri R2 R3 G R20 R21 Phys
No. data
CH3
4.001 CH3 CH3 H CH3 CH3
4.002 CH3 CH3 CH3 C(O)C(CH3)3 CH3 CH3
4^ 4i- 4"->- 4i. 4" 4*. 4-». 4"-> 4s. 4i. 4i. 4*. 4^ s. 4s. 4^. 4*. O o b b b b b b b io io b b b b b b o b b o O o p o o co oo •vi cn en co ro ->■ o co oo o en o tn 4*. CO 3
o o o o o o o o o o o 9 o o o o o o o 3J
X ro X X ro X ro X III III lil ro X X X III o o o o ro X ro X ro X ro X X ro X X ro o o o o o X X X X o o o o o o
X X X X X X X X X X X
o o o o o o o o o o o o o o o o o o o ro X X X X r Xo X X lil o X X X X ro X ro X ro X X X X X o o X o o o
X X X X X
o o o o o o o o ill o o o o o o o o o o 13
X X X X X X X X X X X o ro ro ro ro o ro X ro X ro X ro X ro X X X r o o o o o X o o o o o o
X X X X X X X X X I X
Q.
CO
Comp. R2 R3 G >20 ^21 Phys. No. data
C≡CH CH3 CH, H CH2CH2CH2CH2
4.022
C≡CH CH, C≡CH H CH2CH2CH2CH2
4.023
CH3 C≡CH CH3 H
4.024 CH2CH2CH2CH2
CH3 CH, CH, H
4.025 CH2CH2CH2CH2CH2
CH2CH3 CH3 CH2CH3 π
4.026 CH2CH2CH2CH2CH2
4 097 CH2CH3 CH2CH3 CH2CH3 H CH2CH2CH2CH2CH2
C≡CH CH3 CH3 H
4.028 CH2CH2CH2CH2CH2
4.029 C≡CH CH3 C≡CH H CH2CH CH2CH2CH2
4 030 ^^3 C≡CH CH3 H CH2CH2CH2CH2CH2
CH2CH3 Cπ3 CH2CH3 H
4.031 CH2CH2OCH2CH2
Table 5: Compounds of the formula Ik:
cn en cn en cn en en cn en en en en cn cn en en en en cn en en en en en en b b b b o o o o o o o o o o o o o
IO IO IO I b b b O IO IO b o o o o o o o o o cn 4s. CO IO o CO 00 cn en co o 3
CO 00 cn en 4s. CO IO TJ
Q- "0
Comp. Ri R2 R3 G Rl8 Rl9 Phys
No. data
5.026 CH3 C≡CH CH3 H CH2CH2CH2CH2
5.027 CH3 CH3 CH3 H CH2CH2CH2CH2CH2
5.028 CH2CH3 CH3 CH2CH3 H CH2CH2CH2CH2CH2
5.029 CH2CH3 CH2CH3 CH2CH3 H CH2CH2CH2CH2CH2
5.030 C≡CH CH3 CH3 H CH2CH2CH2CH2CH2
5.031 C≡CH CH3 C≡CH H CH2CH2CH2CH2CH2
5.032 CH3 C≡CH CH3 H CH2CH2CH2CH2CH2
5.033 CH2CH3 CH3 CH2CH3 H CH2CH2OCH2CH2
Table 6: C Compounds of the formula Im:
Comp. Ri R2 R3 G R2ι Rl9 Phys
No. data
6.001 CH3 CH3 CH3 H CH3 CH3
6.002 CH3 CH3 CH3 C(O)C(CH3)3 CH3 CH3
6.003 CH3 CH3 CH3 C(O)OCH2CH3 CH3 CH3
6.004 CH2CH3 CH3 CH2CH3 H CH3 CH3
6.005 CH2CH3 CH3 CH2CH3 C(0)C(CH3)3 CH3 CH3
6.006 CH2CH3 CH3 CH2CH3 C(O)OCH2CH3 CH3 CH3
6.007 CH CH3 CH2CH3 CH2CH3 H CH3 CH3
6.008 CH2CH3 CH2CH3 CH2CH3 C(O)C(CH3)3 CH3 CH3
6.009 CH2CH3 CH2CH3 CH2CH3 C(O)OCH2CH3 CH3 CH3
6.010 C≡CH CH3 CH3 H CH3 CH3
6.011 C≡CH CH3 CH3 C(0)C(CH3)3 CH3 CH3
6.012 C≡CH CH3 CH3 C(O)OCH2CH3 CH3 CH3
6.013 C≡CH CH3 C≡CH H CH3 CH3
Comp. Ri R2 R3 G R2ι "Ϊ19 Phys.
No. data
6.014 C≡CH CH3 C≡CH C(0)C(CH3)3 CH3 CH
6.015 C≡CH CH3 C≡CH C(O)OCH2CH3 CH3 CH3
6.016 CH3 C≡CH CH3 H CH3 CH3
6.017 CH2CH3 CH3 CH2CH3 H CH2CH2CH2
6.018 CH2CH3 CH3 CH2CH3 H CH2OCH2
6.019 CH2CH3 CH3 CH2CH3 H C ClH2CH2CH2CH2
o o o o o o o o I I I I I I I I I I io XI
I I I I I I O O O O O O O O O O O O O O O O O
I I~ I I I I I I
0 O O O O O O O O O O O O O O O O O O O O O O O
CO CO o o Q- "0
si si si si si si •si s| •si s| s| •si sj si si s| si si sj s| si sl
O o o O O O O O O O O o z o o 4s. o O o
4s. 4S. 4 os. 4s. 4s. 4s. CO CO CO CO CO CO CO C oO o CO o IO o IO o io o IO IO ' cn cn 4"s. CO IO O CO 00 si en en 4s. CO ω σ IO o CO 00 si en cn 3
-p
o o o o o o
I o o o o XI o III I I o o o o
I I o I I o o o o o o o o o O O O O O "I
I o ro I I o I I o 0
I 1 I I I I I
I o I I o o
I I o I o I
o I o I o I o I o I o I o I o I o o o o
I I III III o I o I o I oI oI oI oI oI oI o I ω O O
I I
o ro ro ro o o o o o o o ro o
I I I I I o o o o ro r
I o I III III III -π o o
I X -■ I T T o XI o r > > n ro ro ro
I I I o III o o C) o I
I I o I I I I
o o o o o o I I O o i o o i o o i o o o o o o o o o o o o o o O o o o o o o o o o o o o o o o O o o o o o o o o
T X o
I X X ro I T X I X I X I o o o o o
I o I o I I I I I
0 o XI
1 OI o I Io oI oI oI oI oI oI oI I
u. XI
U) r
0)
Comp. Ri R2 R3 G ^21 Ru Phys.
No. data
7.047 C≡CH CH3 CH3 C(0)C(CH3)3 CH2
7.048 C≡CH CH3 CH3 C(O)OCH2CH3 CH,
7.049 C≡CH CH3 CH2CH3 H CH2
7.050 C≡CH CH3 CH2CH3 C(0)C(CH3)3 CH2
7.051 C≡CH CH3 CH2CH3 C(O)OCH2CH3 CH2
7.052 C≡CH CH3 C≡CH H CH2
7.053 C≡CH CH3 C≡CH C(0)C(CH3)3 CH2
7.054 C≡CH CH3 C≡CH C(O)OCH2CH3 CH2
7.055 OCH3 CH3 CH2CH3 H CH2
7.056 OCH3 CH3 CH2CH3 C(0)C(CH3)3 CH2
7.057 OCH3 CH3 CH2CH3 C(O)OCH2CH3 CH2
7.058 OCH3 CH3 Br H CH2
7.059 OCH3 CH3 Br C(0)C(CH3)3 CH2
7.060 OCH3 CH3 Br C(O)OCH2CH3 CH2
7 0R1 OCH3 CH3 C≡CH H CH2
7.062 OCH, CH3 C≡CH C(O)C(CH3)3 CH2
7.063 OCH3 CH3 C≡CH C(O)OCH2CH3 CH2
Comp. Ri R2 R3 G R21 R15 Phys.
No. data
7.064 CHs CH3 CH3 H CH2 CH2
7.065 CH3 CH3 CH3 C(O)C(CH3)3 ^ ^
7.066 CH3 CH3 CH3 C(O)OCH2CH3 CH2 CH2
7.067 CH2CH3 CH3 CH2CH3 H CH2 CH2
7 068 CH2CH3 CH3 CH2CH3 C(O)C(CH3)3 , , . ,
7 069 CH2CH3 CH3 CH2CH3 C(O)OCH2CH3 U ru
7.070 CH2CH3 CH3 Br H CH2 CH2
7 071 CH2CH3 CH3 Br C(0)C(CH3)3 Q. , --,._.
7.072 CH2CH3 CH3 Br C(O)OCH2CH3
CH2 CH2
7.073 C=CH Chl3 CH3 H CH2 CH2
7 074 C≡CH CH3 CH3 C(0)C(CH3)3 ^ ^
7 075 C≡CH CH3 CH3 C(O)OCH2CH3 u
7.076 C≡CH CH3 CH2CH3 H CH2 CH2
7.077 C≡CH CH3 CH2CH3 C(0)C(CH3)3 CH2 CH2
7 078 C=CH CH3 CH2CH3 C(O)OCH2CH3 M r>u
7.079 C=CH CH3 C=CH H CH2 CH2
Comp. R R2 R3 G R2ι R15 Phys.
No. data
7.080 C≡CH CH3 C≡CH C(O)C(CH3)3 ^ ^
7 081 C≡CH CH3 C≡CH C(O)OCH2CH3
7.082 0CH3 CH3 CH2CH3 H CH2 CH2
7.083 OCH3 CH3 CH2CH3 C(O)C(CH3)3
CH2 CH2
7 084 OCH3 CH3 CH2CH3 C(O)OCH2CH3 L I_I
7.085 OCH3 CH3 Br H CH2 CH2
7.086 0CH3 CH3 Br C(0)C(CH3)3 CH2 CH2
7 087 OCH3 CH3 Br C(O)OCH2CH3 l_ι u
7.088 0CH3 Chl3 C≡CH H CH2 CH2
7.089 0CH3 CH3 C≡CH C(0)C(CH3)3 ^ ^
7 090 OCH3 CH3 C≡CH C(O)OCH2CH3
Table 8: Compounds of the formula lo:
CθmP- R1 R2 R3 G R19 R17 phyS.
No- data
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 z o o o o o o o o o o o o o o o o o o o o o o o p o
CO IO IO o o o o o o o o
IO IO IO IO IO IO ro IO o o o o o o o o o o CO 00 sj cn en 4s. CO IO o CO 00 s| cn en 4s. CO IO o CO oo sl en en 4S. CO IO 3
TJ
o o o o o o o o o o o o o o o O oO O O O O O O O O O O O O O O X* o o o o o III III III T III III III III lil III T I I I I I I
I I I I o o o II o o o o o o ro ro I I I ro I r Io I I I
I I I o I I I I I I oo o o o o o o o o o oo oo
I I I I I I I I I I I I I
O O O O O O O O O O O O I I I I I I I I I I I I r 1o3
ro ro O O O O O O I I I I I I
I o
o o o o o o o o o o o o o o o o o o o
I I I I Io o I oI oI oI oI oI oI Io o I I I I I X I I X I I I I I I I
Q- ■v
0) rr
0) s< CO
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 o o o o o o o o o o o o o o o o O o o o o o o o o z o o cn en cn en en 4s. 4S- 4s. 4s. 4s. 4s. 4-s. 4s. 4S. CO CO CO CO CO CO co CO CO
4s. CO IO o CO 00 s| en en 4s. CO IO o CD 00 sl cn cn 4s. CO IO 3 ■o
XI
o o o o o o o o o o o o o o o o o o o o o o o o
I I I I I I I I I I I I I T I T T X III III o o I I I I
I I
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I I I I I I -^ I I I I I I I I I X I III III III ^ ro ro ro ro ro ro ro ro o o o o o o o o o o I I o I
I I I I I I I X
o o I o o I o o I o o I o o I I I X I I o o I o G) o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o
I X I X I X ro I X X r Io ro I X r X ro ro ro o o ω o o o o o o
I I I I I I I
O O O O O O XJ
O O -π I I I I I I o o o o o o o o o o o o o o o r Io roI rIo rIo rIo roI roI rIo roI roI ro I ro I I ro I ro I o o o o o o o o o o o o o o o
I I I I I I I I I I ro I r Io r Io r Io ro X o o -π O O O O O O XI X I I I I I
N> 3 Q. i 4S. ? -ϋ
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No. data
D i -t K. OCH3 CH3 Br H CH2OCH2 o ^g OCH3 CH3 Br C(O)C(CH3)3 CH2OCH2
Q - -\γ OCH3 CH3 Br C(O)OCH2CH3 CH2OCH2
8 118 OCH3 CH3 C≡CH H CH2OCH2
8 119 OCH3 CH3 C≡CH C(0)C(CH3)3 CH2OCH2
8 120 OCH3 CH3 C≡CH C(O)OCH2CH3 CH2OCH2
Formulation examples for herbicidallv active compounds of the formula I
(% = per cent by weiqht)
F1. Emulsion concentrates a) b) c) d)
Active compound according 5% 10% 25% 50% to Tables 1 -8
Ca dodecylbenzenesulfonate 6% 8% 6% 8%
Castor oil polyglycol ether 4% - 4% 4%
(36 mol of EO)
Octylphenol polyglycol ether - 4% - 2%
(7- 8 mol of EO)
Cyclohexanone - - 10% 20%
Arom. hydrocarbon 85% 78% 55% 16% mixture C9-C12
Emulsions of any desired concentration can be prepared from such concentrates by dilution with water.
F2. Solutions a) b) c) d)
Active compound according 5% 10% 50% 90% to Tables 1 -8
1 -Methoxy-3-(3-methoxy- propoxy)propane - 20% 20%
Polyethylene glycol MW 400 20% 10%
N-Methyl-2-pyrrolidone - - 30% 10%
Arom. hydrocarbon 75% 60% mixture C8-Cι2
The solutions are suitable for use in the form of tiny droplets.
F3. Wettable powders a) b) c) d)
Active compound according 5% 25% 50% 80% to Tables 1-8
Sodium lignosulfonate 4% - 3% -
Sodium laurylsulfate 2% 3% - 4%
Sodium diisobutylnaphthalene- - 6% 5% 6% sulfonate
Octylphenol polyglycol ethe - 1% 2% -
(7-8 mol of EO)
Finely divided silica 1% 3% 5% 10%
Kaolin 88% 62% 35% -
The active compound is thoroughly mixed with the additives and ground well in a suitable mill. This gives spray powders which can be diluted with water to give suspensions of any desired concentration.
F4. Coated granules a) b) c)
Active compound according 0.1% 5% 15% to Tables 1 -8
Finely divided silica 0.9% 2% 2%
Inorg. carrier material 99.0% 93% 83%
( E 0.1 - 1 mm), for example CaCO3 or SiO2
The active compound is dissolved in methylene chloride, the solution is sprayed onto the carrier and the solvent is subsequently evaporated off under reduced pressure.
F5. Coated granules a) b) c)
Active compound according 0.1% 5% 15% to Tables 1-8
Polyethylene glycol MW 200 1.0% 2% 3%
Finely divided silica 0.9% 1 % 2%
Inorg. carrier material 98.0% 92% 80%
( E 0.1 - 1 mm), for example CaCO3 or SiO2
In a mixer, the finely ground active compound is applied evenly to the carrier material moistened with polyethylene glycol. In this manner, dust-free coated granules are obtained.
F6. Extruder αranules a) b) c) d)
Active compound according 0.1% 3% 5% 15% to Tables 1-8
Sodium lignosulfonate 1.5% 2% 3% 4%
Carboxymethylcellulose 1.4% 2% 2% 2%
Kaolin 97.0% 93% 90% 79%
The active compound is mixed with the additives, ground and moistened with water. This mixture is extruded and subsequently dried in a stream of air.
F7. Dusts a) b) c)
Active compound according 0.1% 1% 5% to Tables 1-8
Talc mixture 39.9% 49% 35%
Kaolin 60.0% 50% 60%
Ready-to-use dusts are obtained by mixing the active compound with the carriers and grinding the mixture in a suitable mill.
F8. Suspension concentrates a) b) c) d) Active compound according 3% 10% 25% 50% to Tables 1-8
Ethylene glycol 5% 5% 5% 5%
Nonylphenol polyglycol ether 1% 2%
(15 mol of EO)
Sodium lignosulfonate 3% 3% 4% 5%
Carboxymethylcellulose 1% 1% 1% 1%
37% aqueous formaldehyde 0.2% 0.2% 0.2% 0.2% solution
Silicone oil emulsion 0.8% 0.8% 0.8% 0.8%
Water 87% 79% 62% 38%
The finely ground active compound is intimately mixed with the additives. This gives a suspension concentrate, from which suspensions of any desired concentration can be prepared by dilution with water.
Biological Examples
Experimental comparison with the prior art:
The following compounds were examined for their herbicidal activity:
Compound No. 1.01
according to the present invention, and compound A
(compound A)
from the prior art (EP-A-0 508 126, compound no. 46 of Table 1).
Example B1 : Herbicidal action before emergence of the plants (pre-emergence action) Monocotyledonous and dicotyledonous weeds are sown in standard soil in plastic pots, immediately after sowing, the test substances are applied (500 I of water/ha) as an aqueous suspension (prepared using a 25% wettable powder (Example F3, b)) or as an emulsion (prepared using a 25% emulsion concentrate (Example F1 , c)). The application rate is 500 g of active substance/ha. The test plants are subsequently grown under optimum conditions in a greenhouse. 3 weeks after the application, evaluation is carried out using a nine-level scale of ratings (1 = complete damage, 9 = no effect). Ratings of 1 to 4 (in particular 1 to 3) mean a good to very good herbicidal action.
Test plants: Alopecurus (Alo), Avena (Ave), Lolium (Lol), Setaria (Set), Panicum (Pan), Sorghum (Sor), Digitaria (Dig), Echinocloa (Ech) and Brachiaria (Bra).
Table B1 : Pre-emergence action:
Pre-emergence action at 500 g of ai/ha
Example B2: Herbicidal action after emergence of the plants (post-emergence action): Monocotyledonous and dicotyledonous weeds are grown in standard soil in plastic pots under greenhouse conditions. The test substances are applied at the 3- to 6-leaf stage of the test plants. The test substances are applied (500 I of water/ha) as an aqueous suspension (prepared using a 25% wettable powder (Example F3, b)) or as an emulsion (prepared using a 25% emulsion concentrate (Example F1 , c)) at an application rate of 500 g of active substance/ha. 3 weeks after the application, evaluation is carried out using a nine-level scale of ratings (1 = complete damage, 9 = no effect). Ratings of 1 to 4 (in particular 1 to 3) mean a good to very good herbicidal action.
Test plants: Alopecurus (Alo), Avena (Ave), Lolium (Lol), Setaria (Set), Panicum (Pan), Sorghum (Sor), Digitaria (Dig), Echinocloa (Ech) and Brachiaria (Bra).
Table B2: Post-emergence action:
Comparing the herbicidal action of the compound A of the prior art with the compound no. 1.01 of the present invention, it can be seen that the compound no. 1.01 surprisingly exhibits considerably better herbicidal action against all of the weeds tested, although this compound differs from the compound A only in that an alkylene group in the ring has been replaced by oxygen.
Example B3: Herbicidal action of compounds of the present invention before emergence of the plants (pre-emergence action):
Monocotyledonous and dicotyledonous weeds are grown in standard soil in plastic pots. Directly after sowing, the test substances are applied (500 I of water/ha) as an aqueous suspension (prepared using a 25% wettable powder (Example F3, b)) or as an emulsion (prepared using a 25% emulsion concentrate (Example F1 , c)). The application rate is 500 g of active substance/ha. The test plants are subsequently grown under optimum conditions in a greenhouse 3 weeks after the application, evaluation is carried out using a nine-level
scale of ratings (1 = complete damage, 9 = no effect). Ratings of 1 to 4 (in particular 1 to 3) mean a good to very good herbicidal action.
Test plants: Avena (Ave), Lolium (Lol), Setaria (Set).
Table B3: Pre-emergence action:
The same results are obtained when the compounds of the formula I are formulated according to Examples F2 and F4 to F8.
Example B4: Herbicidal action of compounds of the present invention after emergence of the plants (post-emergence action):
Monocotyledonous and dicotyledonous weeds are grown in standard soil in plastic pots under greenhouse conditions. The test substances are applied at the 3- to 6-leaf stage of the test plants. The test substances are applied (500 I of water/ha) as an aqueous suspension (prepared using a 25% wettable powder (Example F3, b)) or as an emulsion (prepared using a 25% emulsion concentrate (Example F1 , c)) at an application rate of 250 g of active substance/ha. 3 weeks after the application, evaluation is carried out using a nine-level scale of ratings (1 = complete damage, 9 = no effect). Ratings of 1 to 4 (in particular 1 to 3) mean a good to very good herbicidal action.
Test plants: Avena (Ave), Lolium (Lol), Setaria (Set).
Table B4: Post-emergence action:
The same results are obtained when the compounds of the formula I are formulated according to Examples F2 and F4 to F8.