- Herbicidal esters of D-1-(phenoxy-4-phenoxy)propionic acid
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Optically active enantiomers of the formula I STR1 where R is a group of the formulae STR2 R1 and R2, among others, are halogen or CF3 and Z is a carboxyl, carboxylate, carboxylic acid ester, thioester, carbonamide, carboxylic acid anilide, carbohydrazide or thioamide group, are interesting herbicides the effect of which is considerably superior to that of the optically inactive racemates.
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- Furanyl oximes
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Novel oxime ethers and oxime esters of the formula I given herein have various advantageous effects with regard to stimulation of plant growth, particularly in the early stage of development of the plant. Furthermore, such compounds have the property of rendering, in the sense of an antidote action, agricultural chemicals which would otherwise damage the plants (phytotoxic chemicals) more compatible with the cultivated plants. Herbicides that are insufficiently selective can be used for example in the presence of such oxime derivatives in specific cultivated crops for combating weeds, without disadvantageous consequences for the cultivated plants.
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- 5,6-Dihydro-1,2,4,6-thiatriazin-5-one-1,1-dioxides
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5,6-Dihydro-1,2,4,6-thiatriazin-5-one-1,1-dioxides of the formula STR1 where R1 is hydrogen, a metal atom or an unsubstituted or substituted ammonium radical, R2 is a saturated or unsaturated straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical or 3 to 7 carbon atoms, a branched saturated or unsaturated aliphatic radical of 3 to 10 carbon atoms, a halogen-, alkoxy- or alkylmercapto-substituted aliphatic radical of 2 to 10 carbon atoms tetrahydrofuryl substituted methyl, a cycloalkoxy-substituted aliphatic radical of 4 to 10 carbon atoms, unsubstituted or halogen-substituted benzyl or phenyl, halophenyl, or alkylphenyl of a total of up to 10 carbon atoms, R3 is hydrogen, a straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical of 3 to 7 carbon atoms, a branched aliphatic radical of 3 to 10 carbon atoms, haloalkyl, or alkoxyalkyl of 2 to 10 carbon atoms and X is oxygen and may also be sulfur if R2 is unsubstituted or halogen-substituted benzyl, processes for their preparation, and herbicides containing the above compounds.
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- Process for the manufacture of (phenoxy or benzyl)-phenoxypropionic acid methyl esters
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(Phenoxy- or benzyl)-phenoxypropionic acid methyl esters are produced by esterification of the corresponding anhydrous alkali metal salts with half the molar amount of dimethyl sulfate at a temperature exceeding 120° C.
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- Herbicidal compound, herbicidal composition containing the same, and method of use thereof
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α-[4-(4-Trifluoromethylphenoxy)phenoxy]alkanecarboxylic acids (the "4-trifluoromethylphenoxy group" of which may contain one chlorine atom as a substituent) and derivatives thereof useful as a herbicide, a herbicidal composition containing the compound, m
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- Phenylglyoxylonitrile-2-oxime-cyanomethyl ether as plant growth regulator
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Phenylglyoxylonitrile-2-oxime-cyanomethyl ether of the formula STR1 and compositions containing it, have various advantageous effects with regard to regulation of plant growth. Furthermore, this compound and its compositions have the property of rendering, in the sense of an antidote (safening) action, agricultural chemicals which would otherwise damage the plants more compatible with cultivated plants. Strong herbicides, for example chloroacetanilides or thiolcarbamates, can be used in the presence of such safening agents in specific crops such as sorghum and rice for combatting weeds without disadvantageous consequences for the crops. The safeners are preferably applied to the crop seeds prior to planting.
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