- Chiral separation and enantioselective degradation of vinclozolin in soils
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Vinclozolin is a chiral fungicide with potential environmental problems. The chiral separation of the enantiomers and enantioselective degradation in soil were investigated in this work. The enantiomers were separated by high-performance liquid chromatography (HPLC) on Chiralpak IA, IB, and AZ-H chiral columns under normal phase and the influence of the mobile phase composition on the separation was also studied. Complete resolutions were obtained on all three chiral columns under optimized conditions with the same elution order of (+)/(-). The residual analysis of the enantiomers in soil was conducted using accelerate solvent extraction followed by HPLC determination. The recoveries of the enantiomers ranged from 85.7-105.7% with relative standard deviation (SD) of 0.12-3.83%, and the limit of detection (LOD) of the method was 0.013 μg/g. The results showed that the degradations of vinclozolin enantiomers in the soils followed first-order kinetics. Preferential degradation of the (-)-enantiomer was observed only in one soil with the largest |ES| value of 0.047, and no obvious enantioselective degradation was observed in other soils. It was found that the persistence of vinclozolin in soil was related to pH values based on the half-lives. The two enantiomers disappeared about 8 times faster in basic soils than that in neutral or acidic soils.
- Liu, Hui,Liu, Donghui,Shen, Zhigang,Sun, Mingjing,Zhou, Zhiqiang,Wang, Peng
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- Pyrimidine derivatives, process and intermediate products for their preparation and pesticides or fungicides containing these derivatives
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Pyrimidine compounds I wherein X is C(CO2CH3)═NOCH3, C(CONHCH3)═NOCH3, C(CO2CH3)═CHOCH3, C(CO2CH3)═CHCH3or N(CO2CH3)—OCH3; R1, R2are hydrogen, alkyl, haloalkyl or alkoxy; A is R3is hydrogen, alkyl, haloalkyl, phenoxyalkyl, cycloalkyl, cyano, alkoxy, hydroxyl or halogen; R4is hydrogen, optionally substituted alkyl, alkenyl, alkynyl, haloalkenyl, haloalkynyl, cycloalkyl or alkoxy; Y is hydrogen, hydroxyl, halogen, optionally substituted aryl, hetaryl, cycloalkyl, cycloalkenyl, heterocyclyl, alkyl, alkenyl, alkynyl, haloalkyl, alkoxy, aryloxy, arylthio, hetaryloxy, hetarylthio, cycloalkyloxy or alkylthio, or their salt, their synthesis and intermediates therefore, and their activity against fungi or animal pests.
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- Iminoacetic acid amides and their use as pest control agents
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PCT No. PCT/EP96/04345 Sec. 371 Date Apr. 15, 1998 Sec. 102(e) Date Apr. 15, 1998 PCT Filed Oct. 7, 1996 PCT Pub. No. WO97/14673 PCT Pub. Date Apr. 24, 1997Iminoacetamides of the formula (I) in which A represents a single bond or optionally substituted alkylene, Q represents oxygen or sulphur, R1 represents respectively optionally substituted cycloalkyl, cycloalkenyl, aryl or heterocyclyl, R2 represents respectively optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkenyl, aryl or heterocyclyl, R3 represents hydrogen or respectively optionally substituted alkyl, alkenyl, alkinyl or cycloalkyl, R4 represents respectively optionally substituted cycloalkyl, cycloalkenyl, aryl or heterocyclcyl a process for their preparation, pesticidal compositions containing them, and their use for controlling pests.
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- Use of aminoisothiazoles as microbicides
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PCT No. PCT/EP97/06854 Sec. 371 Date Jun. 16, 1999 Sec. 102(e) Date Jun. 16, 1999 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/27816 PCT Pub. Date Jul. 2, 1998Aminoisothiazoles of the formula I, where R is hydrogen or C1-C4 alkyl and X is halogen, NO2, CN or SCN, and metal complexes and acid addition salts thereof are used as microbicides for protecting industrial materials from being attacked and destroyed by microorganisms.
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- Microbicidal benzotriazoles
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Novel benzotriazoles of the formula STR1 in which R, X1, X2, X3, X4 and Y have the meanings given in the description, and their acid addition salts and metal salt complexes, a process for the preparation of these substances and their use as microbicides in crop protection and in material protection.
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- Halogen alkenyl azolyl microbicides
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Novel halogenoalkenyl-azolyl derivatives of the formula STR1 in which R1 represents optionally substituted alkyl, optionally substituted alkenyl, optionally substituted cycloalkyl, optionally substituted aryl or represents optionally substituted heteroaryl, R2 represents alkyl, halogenoalkyl, 1-hydroxyalkyl, 2-hydroxyalkyl, 1-hydroxyhalogenalkyl, 1-alkenyl or 2-alkenyl, X1 represents fluorine, chlorine, bromine or iodine, X2 represents fluorine, chlorine, bromine or iodine, and Y represents nitrogen or a CH group, and addition products thereof with acids or metal salts are very active as microbicides in plant protection and in the protection of materials.
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- Substituted biphenyl oxazolines
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The invention relates to new substituted biphenyloxazolines of the formula (I) STR1 in which R1 represents C1 -C6 -halogenoalkylthio and R2 represents hydrogen, or R1 and R2 together with the carbon atoms to which they are bonded form a halogen-substituted 5- or 6-membered heterocyclic ring, X represents hydrogen, halogen, C1 -C6 -alkyl or C1 -C6 -alkoxy, and m represents 0, 1 or 2, to processes for their preparation, to new intermediates, and to the use of the substituted biphenyloxazolines for combating animal pests, with the exception of the compound of the formula STR2
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- Acylated 5-aminopyrazoles and the use thereof to combat animal parasites
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The present invention relates to new acylated 5-aminopyrazoles of the formula (I) STR1 in which R1, R2, R3, R4 and R5 have the meaning given in the description, to processes for their preparation and to their use as pesticides.
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- Substituted tetrahydro-5-nitro-pyrimidines
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The present invention relates to novel substituted in that one tetrahydro-5-nitro-pyrimidine of the formula (I), according to claim 1, STR1 in which n, R1, R2 have the meaning given in the description, to a process for its preparation and to its use for combating animal pests, especially insects, arachnids and nematodes, which are encountered in agricultural, in forestry, in the protection of stored products and of materials and, in the hygiene sector.
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- Fungicidal composition for seed dressing
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The present invention relates to a fungicidal composition intended for the protection of the multiplication products of cultivated plants, containing: (a) 2-(4-chlorobenzylidene)-5,5-dimethyl-1-(1H-1,2,4-triazol-1-ylmethyl)-1-cyclopentanol; (b) one or more fungicides suitable for the protection of the said multiplication products, optionally one or more insecticides, (c), an agriculturally acceptable inert vehicle and an agriculturally acceptable surfactant. The invention also relates to a method for protecting the multiplication products of plants against fungal diseases using these compositions.
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- Preparation of N-(3,5-dichlorophenyl)oxazolidine-2,4-diones
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N-(3,5-Dichlorophenyl)-oxazolidine-2,4-diones of the formula STR1 where R1 is haloalkenyl, alkenyl, chloromethyl, CN, CO--O-alkyl, alkoxyalkyl or alkylthioalkyl and R2 is haloalkenyl, alkenyl, hydrogen or alkyl, are prepared by a process in which 3,5-dichlorophenyl isocyanate is reacted with a glycolate of the formula STR2 where R1 and R2 have the above meanings and R3 is alkyl or cyclohexyl, in the presence of a tin(II) salt of the formula STR3 where R4 and R5 are identical or different and are each hydrogen, alkyl, alkenyl or unsubstituted or alkyl-substituted cycloalkyl, or benzyl or phenyl, or R4 and R5 together form --CH2 --CH2 --, --CH=CH-- or o-phenylene, at from 0° to 110° C., the product is heated in the presence of an alcohol of the formula where R6 is alkyl, hydroxyethyl or cyclohexyl, and of a basic compound, the N-(3,5-dichlorophenyl)-oxazolidine-2,4-dione precipitated from the reaction mixture is isolated by filtration at from -30° to +90° C., and additional amounts of N-(3,5-dichlorophenyl)-oxazolidine-2,4-dione are precipitated from the mother liquor by adding water, and are isolated from the aqueous liquid at from -10° to +60° C.
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- Preparation of oxazolidine-2,4-diones
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A novel process for the preparation of oxazolidine-2,4-diones by reaction of ureas with 2-hydroxycarboxylic acid esters.
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- Preparation of oxazolidine-2,4-diones
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A process for the preparation of substituted oxazolidine-2,4-diones by treating a corresponding carbamate with a 2-hydroxycarboxylic acid ester at from 80° to 250° C.
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- N-3,5-dichlorophenyloxazalidines
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N-(3,5-dichlorophenyl)-5-H or lower alkyl-5-lower alkenyloxazolidine-2,4-diones or N-(3,5-dichlorophenyl)-5-methyleneoxazolidine-2,4-dione and fungicidal uses thereof.
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