- Weeding composition compounded by fine glufosinate-ammonium and diuron and preparation method and application thereof
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The invention provides a weeding composition compounded by fine glufosinate-ammonium and diuron. The weeding composition is characterized by comprising fine glufosinate-ammonium, diuron and other auxiliary agents, and the content of the fine glufosinate-ammonium is 1-60 parts by mass, the content of the diuron is 1-60 parts by mass, and the content of the auxiliary agents is 20-70 parts by mass. By reasonably proportioning the proportions of the fine glufosinate-ammonium and the diuron in the herbicide, the pesticide effect of the herbicide is enhanced, the control effect on weeds in uncultivated areas is superior to the activity of the singly applied components, meanwhile, the control spectrum of the weeds is expanded, the weeding effect is improved, the weeding composition has a prominent comprehensive control effect on gramineous weeds, cyperaceae weeds and broadleaf weeds, and has the advantages of fast effectiveness, long lasting period, delayed herbicide resistance, thorough weeding, low residue, low toxicity, safety, environmental protection and the like.
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Paragraph 0034
(2021/08/07)
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- Synthesis method for diuron
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The invention provides a synthesis method for diuron. The synthesis method for diuron comprises the following steps: dropwise adding pretreated 3,4-dichloro phenyl isocyanato toluene liquid into a dimethylamine toluene solution, wherein the temperature does not exceed 15 DEG C, pH of a dropwise adding end point is about 7-11, and the feeding molar ratio of 3,4-dichloro phenyl isocyanato to dimethylamine is 1: 1-3; and after dropwise adding is finished, carrying out suction filtration, and drying an obtained filter cake at the temperature of 90-100 DEG C to obtain a diuron technical product, wherein a solvent obtained after suction filtration is used for preparing the dimethylamine toluene solution after being recycled. Industrial operation steps for synthesis of the diuron are reduced, the purity and the yield are improved, wastewater is not produced in aftertreatment, and the cost is reduced.
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Paragraph 0010; 0027; 0028; 0029; 0030; 0031; 0032
(2017/09/13)
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- Process for synthesizing high-quality diuron
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The invention relates to a process for synthesizing high-quality diuron. The process includes steps of adding toluene and 40% of dimethylamine into a cold synthesis kettle; dropwise adding 3. 4 dichlorobenzene into the cold synthesis kettle at the temperature of 25 DEG C approximately; preserving heat for half an hour after the 3. 4 dichlorobenzene is completely dropwise added into the cold synthesis kettle; placing the cold synthesis kettle in a heat synthesis kettle and increasing the temperature of the heat synthesis kettle until the temperature of the heat synthesis kettle reaches 85 DEG C; carrying out reaction to obtain diuron; centrifugally washing and drying the diuron. The process has the advantages that the process is low in raw material consumption and cost, free of wastewater and favorable for environmental protection, the conversion rate of the high-quality diuron can reach 98.5% at least, and the purity of the high-quality diuron can reach 99.3% at least.
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Paragraph 0025-0027
(2017/10/07)
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- NOXIOUS ARTHROPOD CONTROL AGENT CONTAINING AMIDE COMPOUND
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An object of the present invention is to provide a compound having the controlling activity on a noxious arthropod, and a noxious arthropod controlling agent containing an amide compound of formula (I): wherein X represents a nitrogen atom or a CH group, p represents 0 or 1, A represents a tetrahydrofuranyl group or the like, R1, R2, R3, R4, R5, R6 and R7 represent a hydrogen atom or the like, n represents 1 or 2, Y represents an oxygen atom or the like, m represents any integer of 0 to 7, and Q represents a C1-8 chain hydrocarbon group optionally having a phenyl group or the like, has the excellent noxious arthropod controlling effect.
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- Technology for purifying diuron
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The invention provides a technology for purifying diuron. The method includes the following steps that 3,4-methylbenzene dichlorophenyl isocyanate liquid is transferred into a reaction kettle first, and 30%-40% of dimethylamine aqueous solution is dripped into the reaction kettle; then a solution at the reaction endpoint is transferred into a primary solvent removal tower; the temperature of the primary solvent removal tower is raised; the solution subjected to solvent removal is transferred into a kettle liquid bath from the bottom of the solvent removal tower, standing and layering are carried out, and then filtering is performed; afterwards, the filtered solution is transferred into a secondary solvent removal tower; the solution subjected to solvent removal is transferred into a third-level solvent removal tower; at last, a diuron solution is extracted from the side line of the third-level solvent removal tower, and then is added with water and dried, and accordingly the purified diuron can be obtained. By the adoption of the production technology, a large amount of solvent in the production process of the diuron can be removed, and the purity of the diuron is improved to 98.2%.
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Paragraph 0048-0057
(2017/01/17)
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- Synthesis method of phenylurea herbicide or deuteration-labeled phenylurea herbicide
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The invention relates to a synthesis method of a phenylurea herbicide or a deuteration-labeled phenylurea herbicide (a compound of a formula (I)). The compound of the formula (I) is obtained by reacting a compound of a formula (II) with a dimethylamine salt or D6-dimethylamine salt in the presence of an organic base. According to the synthesis method, the side reaction of substituted phenyl isocyanate and water or alcohol is avoided, the leakage of dimethylamine or dimethylamine-D6 is reduced, and the synthesis method has the advantages of simple operation, low requirements for equipment, low cost, high yield, and fewer by-products. The formula I is shown in the description.
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Paragraph 0084; 0085; 0086
(2017/02/17)
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- Rhodium(iii)-catalysed aerobic synthesis of highly functionalized indoles from N-arylurea under mild conditions through C-H activation
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A Rh(iii) catalysed amino arylation of alkynes using copper as the terminal oxidant for regeneration of the catalytically active species under aerobic conditions is described. This novel C-H activation reaction was applied to the synthesis of a wide range of substituted indoles from N-arylureas.
- Kathiravan, Subban,Nicholls, Ian A.
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supporting information
p. 14964 - 14967
(2014/12/11)
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- Improved method for the preparation of 1,1-dimethyl-3-arylureas using chlorocarbonylsulfenyl chloride
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A convenient procedure for preparing some arylureas having herbicidal properties is reported. The method has two steps: (1) reaction of arylamine with chlorocarbonylsulfenyl chloride in the presence of nonpolar solvent to produce aryl carbonylsulfenyl chloride and (2) reaction with dimethylamine in a two-phase reaction catalysed by phase-transfer catalyst to produce the corresponding aryl ureas. Taylor & Francis Group, LLC.
- Adeppa,Rupainwar,Misra, Krishna
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experimental part
p. 714 - 721
(2012/01/13)
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- Preparation of N,N-Dimethyl-N′-arylureas using S,S-dimethyl dithio-carbonate as a carbonylating reagent
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A new, general method for the preparation of N,N-di-methyl-N′- arylureas using S,S-dimethyl dithiocarbonate as a phosgene substitute is reported. The method has been set up according to four procedures, all including three steps: (1) reaction of S,S-di- methyl dithiocarbonate with dimethylamine to give S-methyl N,N-dimethylthiocarbamate; (2) halogenation with various halogenating reagents (chlorine, methanesulfenyl chloride, bromine, and meth-anesulfenyl bromide) to give N,N-dimethylcarbamoyl chloride or bromide; (3) in situ reaction with primary arylamines. All the target products were obtained in high yields (85-98%; 16 reactions, average yield 93%) and with high purity. Also noteworthy is the recovery of byproducts of industrial interest, namely methanethiol and dimethyl disulfide, with complete exploitation of the reagent S,S- dimethyl dithiocarbonate. Georg Thieme Verlag Stuttgart.
- Degani, Iacopo,Fochi, Rita,Magistris, Claudio,Migliaccio, Mara
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experimental part
p. 801 - 808
(2009/08/07)
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- Phenylureas. Part 1. Mechanism of the basic hydrolysis of phenylureas
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The mechanism of the hydrolytic decomposition of phenylureas in basic media in the pH range 12 to 14 is investigated. In this pH range a levelling of the rate-pH curve is observed as well as a change of the substituent influence on the hydrolysis rate. These experimental findings suggest the formation of an unreactive side product of the phenylurea in a parasitic side equilibrium at sufficiently high pH. The urea dissociates at the aryl-NH group to give its conjugate base. For the hydrolytic decomposition of phenylureas an addition-elimination mechanism is proposed as has been established for the alkaline hydrolysis of carboxylic acid esters and amides.
- Laudien,Mitzner
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p. 2226 - 2229
(2007/10/03)
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- Synthesis of aromatic urea herbicides by the selenium-assisted carbonylation using carbon monoxide with sulfur
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Commercially useful aromatic urea herbicides were synthesized in good yields from lithium amides of aromatic amines with thiocarbamates, which were prepared by the selenium-assisted carbonylation of secondary amines with carbon monoxide and sulfur under mild conditions.
- Mizuno, Takumi,Kino, Takanobu,Takatoshi, Ito,Miyata, Toshiyuki
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p. 1675 - 1688
(2007/10/03)
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- Halopyridyl triazolinone herbicides and herbicidal use thereof
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Disclosed are herbicidal halopyridyl triazolinones, herbicidal compositions comprising the halopyridyl triazolinones, and herbicidal use of the compounds and compositions. Such compounds and compositions are useful as both preemergence and postemergence herbicides in a variety of crops.
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- Herbicidal composition for upland farming and weeding method
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A herbicidal composition for upland farming which can control weeds that have been difficult to control, for example, cleavers, chickweed, birdseye speedwell and violet, said composition containing as active ingredients a 3-substituted phenylpyrazole derivative represented by the general formula (I): STR1 (wherein R is a hydrogen atom, a C1-6 alkyl group, a C3-6 cycloalkyl group, a C1-6 haloalkyl group, a C2-6 alkenyl group or a C2-6 alkynyl group, R1 is a C1-6 alkyl group, X1 and X2, which may be the same or different, are halogen atoms, and Y is an oxygen atom or a sulfur atom) and at least one compound selected from the group consisting of sulfonylurea derivatives, phenylurea derivatives and phenoxy fatty acid derivatives; and a weeding method using said composition.
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- New synthetic strategy for urea herbicides
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This work describes an effective and a safe procedure for the preparation of commercially applicable trisubstituted ureas derived from their thio analogues which result from the thiuram disulfides in quantitative yields.
- Ramadas,Janarthanan
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p. 2357 - 2362
(2007/10/03)
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- Substituted pyridinesulfonamide compound or its salt, process for preparing the same, and herbicide containing the same
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A substituted pyridinesulfonamide compound or its salt represented by the following general formula (I): STR1 wherein A is CH or N; when A is CH, R1 and R2 may be either each independently a member selected from the group consisting of unsubstituted or substituted alkyl groups, unsubstituted or substituted alkenyl groups, unsubstituted or substituted cycloalkyl groups, and unsubstituted or substituted phenyl groups; when A is N, R1 is an unsubstituted or substituted alkyl group, R2 is an unsubstituted or substituted alkyl group, or an unsubstituted or substituted alkoxy group; and X and Y are each independently a member selected from the group consisting of alkyl groups and alkoxy groups, is disclosed. This compound is useful as the effective ingredient of a herbicide showing a wide weed-control spectrum even if used in a small amount.
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- REACTION OF AMINES WITH N-ARYLUREAS, ALKYL N-ARYLCARBAMATES, AND SALTS OF THIOCARBAMIC ACIDS
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The reaction of amines with N-arylureas, alkyl N-arylcarbamates, and salts of thiocarbamic acids is studied. The regularities found are explained by the characteristic features of hydrogen bond formation.
- Manov-Yuvenskii, V. I.,Kuznetsov, S. L.
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p. 1063 - 1069
(2007/10/02)
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- Biocide composition and use
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A stable liquid dispersion in an non-polar organic solvent containing an alkylsulphonylhalopyridine and a dispersing agent which is the reaction product of a hydroxyalkylcarboxylic acid and an amine or salt thereof. The alkylsulphonylhalopyridine may be 2,3,5,6-tetrachloro-4-(methylsulphenyl)pyridine and the hydroxycarboxylic acid may be poly(12-hydroxystearic acid) and the amine may be either dimethylamino propylamine or polyethyleneimine. The solvent may be white spirit or an ester or vegetable oil which is a plasticiser for PVC.
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- Substituted pyridinesulfonamide compounds or their salts, process for preparing the same, and herbicides containing the same
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A substituted pyridinesulfonamide compound or its salt represented by the following general formula (I): wherein R1 is an unsubstituted or substituted alkyl group; R2 is an unsubstituted or substituted alkyl group, or an unsubstituted or substituted alkoxy group; and X and Y are each independently a member selected from the group consisting of alkyl groups and alkoxy groups, is disclosed. This compound is useful as the effective ingredient of a herbicide showing a wide weed-control spectrum even if used in a small amount.
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- Process for the preparation of pure, unsymmetrically disubstituted ureas
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Process for the preparation of pure, unsymmetrically disubstituted ureas of the general formula STR1 in which R denotes a phenyl radical which is unsubstituted, or monosubstituted or polysubstituted by halogen atoms or alkyl, alkoxy, aryloxy or trifluoromethyl groups, an oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, benzoxazolyl or benzothiazolyl radical which is unsubstituted, or monosubstituted or polysubstituted by halogen atoms or alkyl, alkoxy or trifluoromethyl groups and R1 and R2 independently of one another denote a hydrogen atom or an alkyl group, where R1 and R2 are not simultaneously hydrogen or R1 and R2 together denote a butylene or pentylene group, by reaction of an N-alkyl- or N,N-dialkylurea with an unsubstituted or substituted arylamine or a heterocyclic amine in the presence of that amine which is already present in the starting material, the respective N-alkyl- or N,N-dialkylurea.
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- Preservative for aqueous products and systems
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An antimicrobial composition for preserving products or systems containing an aqueous phase comprising from 10 to 60% by weight or tert.-butyl hydroperoxide, from 3 to 50% by weight of a monophenylglycol ether of formulas I or II herein, and the remainder a diluent which is water, an organic solvent or a mixture of water and organic solvent; and a method of use of the antimicrobial composition. The antimicrobial composition may additionally include up to about 20% by weight of a biocide selected from certain non-halogenated phenols, certain heterocyclic compounds and guanidine, phthalimide and urea derivatives.
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- Process for preparation of substituted phenylureas
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Process for preparing a substituted phenylurea. A suitably substituted aniline, excess urea in a mole ratio of at least 1.1 with respect to the aniline, and a secondary amine are reacted simultaneously in a non-hydroxyl-containing organic solvent at a temperature of 130° to 250° C., with removal of ammonia as it forms. The phenylureas obtained are used as herbicides.
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- Composition for defoliating plants
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New compositions for defoliating plants possessed of synergistic activity comprising (A) a compound of formula I STR1 in which R1 is hydrogen or C1 -C4 -alkyl, R2 is hydrogen, C1 -C4 -alkyl, C1 -C4 -alkoxy or C1 -C4 -alkylthio, R3 is hydrogen, C1 -C4 -alkyl, C1 -C4 -alkoxy, C1 -C4 -alkylthio or C3 -C8 -cycloalkyl, wherein R2 and R3 taken together with the nitrogen atom to which they are attached is a morpholino- piperidino- or pyrrolidino-group, X is oxygen or sulfur, Y can be the same or different and is hydrogen, halogen, C1 -C4 -alkyl, C1 -C4 -alkoxy, C1 -C4 -alkoxy-C1 -C2 -alkyl, C1 -C4 -alkylthio, trifluoromethyl or nitro, and n is the number 1, 2, 3, 4 or 5, in combination with (B) a defoliant for plants in a proportion of 1 to 99 parts by weight of component (A) to 99 to 1 parts by weight of component (B). As the defoliant there can be employed 1,2,3-thiadiazole-5-yl-urea derivatives, 1,2,3-thiadiazole-5-carboxylic acid derivatives, benzylaminopurine derivatives, 2,3-dihydro-5,6-dimethyl-1,4-dithiine-1,1,4,4-tetroxide, 1,1'-dimethyl-4,4'-bipyridilium-dichloride, sodium chlorate and S,S,S-tributylphosphortrithioate. The compositions of the invention are especially suitable for use in the defoliation of cotton plants.
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- THERMAL DECOMPOSITION OF SUBSTITUTED UREAS
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The thermal dissociation of N,N'-diaryl- and N,N-dimethyl-N'-aryl-ureas was investigated under isothermal conditions in absence of solvent.In the case of N,N-dimethyl-N'-arylureas enthalpies of reaction were determined, and their relation to Hammett ? constants was shown.
- Chimishkyan, A. L.,Svetlova, L. P.,Leonova, T. V.,Gluyaev, N. D.
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p. 1317 - 1320
(2007/10/02)
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- Process for preparing substituted urea derivatives
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A process for the preparation of substituted urea derivatives, and compositions and concentrates for the same purpose are disclosed. According to the process the substituted urea derivatives of formula (I) STR1 wherein R is hydrogen, alkyl, aryl, cycloalkyl or aralkyl, R1 and R2 are hydrogen, alkyl, alkenyl, alkinyl, alkoxy, oxyalkyl, cycloalkyl, aralkyl, alkoxycarbonylalkyl, aryl or heteroaryl, or R1 and R2 together with the adjacent nitrogen atom may form a saturated or unsaturated heterocycle, or a condensed and/or substituted ring system, and said heterocycle or said condensed and/or substituted ring system may contain also a sulfo group, can be manufactured by reacting an amine of formula (II) STR2 with an N-carbamoyl-benzoic acid sulfimide derivative of formula (III) STR3 The disclosed N-acylating composition comprises of from 3 to 60% by weight, preferably of from 5 to 50% by weight sulfimide derivative of formula (III), of from 97 to 40% by weight, preferably of from 95 to 50% by weight solvent, and if desired, an organic or inorganic base. The disclosed N-acylating concentrate comprises of from 60 to 95.5% by weight N-acylating agent of formula (III) and of from 4.5 to 40% by weight additives.
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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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- Micro granules for pesticides and process for their manufacture
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The invention is concerned with micro granules for pesticides and their manufacture by wet grinding a suspension of the active compound together with adjuvants in a ball mill to a particle size of at most 0.01 mm and subsequent spray-drying of the suspension thus obtained under a pressure of from 5 to 8 atmospheres gauge and at 140° to 300° C.
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- N-methylcarbanilic-[3-(ethoxycarbonylamino)-phenyl]-ester as a cotton herbicide
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N-methylcarbanilic-[3-(ethoxycarbonylamino)-phenyl]-ester. The compound is a specific cotton herbicide. It is highly active against common weeds without causing harm to the cotton plants at any state of their development.
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- 4,5-Dichloroimidazole-2-carboxylic acid derivatives
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4,5-Dichloroimidazole-2-carboxylic acid derivatives of the formula STR1 in which the group STR2 represents a carbon atom which has three bonds to hetero-atoms, and their salts with bases, possess insecticidal, acaricidal, fungicidal, nematicidal and herbicidal properties.
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- Certain ethers of certain di and trihalo-1-hydroxy-2-(fluoroalkyl)1H-imidazo(4,5-b)pyridine derivatives
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Ethers of di and trihalo-1-hydroxy-2-(1,1-difluoroalkyl)-1H-imidazo(4,5-b)pyridine compounds, useful as herbicides and rodenticides.
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- Esters of 1-hydroxy-1H-imidazo-(4,5-b)-pyridines as herbicides
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Ethers and esters of 1-hydroxy-2-(1,1-difluoroalkyl)-1H-imidazo(4,5-b)pyridine compounds, useful as herbicides.
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- 1H-imidazo(4,5,-b)-pyridine derivatives
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Ethers and esters of 1-hydroxy-2-(1,1-difluoroalkyl)-1H-imidazo(4,5-b)pyridine compounds, useful as herbicides.
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