1746-81-2Relevant articles and documents
Preparation method of monolinuron
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Paragraph 0040-0075, (2019/04/02)
The invention belongs to the field of pesticide synthesis technology, and particularly relates to a preparation method of monolinuron. A monolinuron product is prepared through a one-step reaction ina polar solvent by analyzing the structure of monolinuron and the steric hindrance of chemical synthesis, and using cheap and easily available p-chlorophenyl isocyanate and dimethylhydroxylamine hydrochloride as main raw materials. The product purity reaches 98% or more than 98%, and the product yield is close to 80%, therefore, the technical problems of complicated process, multiple by-products and environmental pollution existing in the preparation technology of monolinuron in the prior art are solved.
Herbicidal composition for upland farming and weeding method
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, (2008/06/13)
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.
Composition for defoliating plants
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, (2008/06/13)
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.
