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57 results about "Benzoylurea" patented technology

Benzoylureas are chemical derivatives of N-benzoyl-N′-phenylurea (benzoylurea). They are best known for their use as insecticides. They act as insect growth regulators by inhibiting synthesis of chitin in the insect's body.

Benzoyl Urea Derivatives

The new benzoyl urea derivatives of formula (I) wherein the meaning of X and Y independently are hydrogen atom, hydroxy, benzyloxy, amino, nitro, C1-C4 alkylsulfonamido optionally substituted with a halogen atom or halogen atoms, C1-C4 alkanoylamido optionally substituted with a halogen atom or halogen atoms, C1-C4 alkoxy, aroyl-carbamoyl optionally substituted with halogen atom or C1-C4 alkyl or C1-C4 alkoxycarbonyl group, or the neighboring X and Y groups optionally form together with one or more identical or different additional hetero atom and —CH═ and/or —CH2— groups an optionally substituted 4-7 membered homo- or heterocyclic ring, preferably morpholine, pyrrole, pyrrolidine, oxo- or thioxo-pyrrolidine, pyrazole, pyrazolidine, imidazole, imidazolidine, oxo- or thioxo-imidazole or imidazolidine, 1,4-oxazine, oxazole, oxazolidine, triazole, oxo- or thioxo-oxazolidine, or 3-oxo-1,4-oxazine ring, V and Z independently are hydrogen or halogen atom, cyano, C1-C4 alkyl, C1-C4 alkoxy, trifluoromethyl, hydroxy or optionally esterized carboxyl group, W is oxygen atom, as well as C1-C4 alkylene, C2-C4 alkenylene, aminocarbonyl, —NH—, —N(alkyl)-, —CH2O—, —CH2S—, —CH(OH)—, —OCH2— group, wherein the meaning of alkyl is a C1-C4 alkyl group—, when the dotted bonds () represent simple C—C bonds then U is hydroxy group or hydrogen atom or when W is C1-C4 alkylene or C2-C4 alkenylene group, then one of the dotted bonds () can represent a further double C—C bond and in this case U means an electron pair, which participate in the double bond and optical antipodes, racemates and the salts thereof are highly effective and selective antagonists of NMDA receptor, and moreover most of the compounds are selective antagonist of NR2B subtype of NMDA receptor. Furthermore objects of the present invention are the pharmaceutical compositions containing new benzoyl urea derivatives of formula (I) or optical antipodes or racemates or the salts thereof as active ingredients and processes for producing these compounds and pharmaceutical compositions.
Owner:RICHTER GEDEON VEGYESZETI GYAR RT

Red light carbonized polymer dot based on citric acid and benzoylurea and preparation method and application thereof

The invention discloses a red light carbonized polymer dot based on citric acid and benzoylurea and a preparation method and application thereof, the raw materials of the red light carbonized polymer dot based on citric acid and benzoylurea comprise citric acid and benzoylurea, and the mass ratio of citric acid to benzoylurea is (0.5-3): (1-6). The N, N-dimethylformamide is used as a solvent, ammonium fluoride is used as a fluorine source additive, the surface polymer state is enriched while the carbon nucleus crystalline state of the RCBCPDs is enhanced, and the RCBCPDs are promoted to have a larger multi-photon absorption cross section after fluorine is introduced, so that a stronger fluorescence imaging effect is displayed in vitro and in vivo. On the basis of a citric acid and benzoylurea carbon dot preparation system, the carbonized polymer dots RCBCPDs with red light are developed, and the carbonized polymer dots are simple in preparation method, excellent in fluorescent property and wide in application prospect. When the RCBCPDs obtained by the invention are applied to cell imaging and in-vivo imaging, the RCBCPDs show interference resistance in cells and mice, and have the advantages of high selectivity, high sensitivity and the like.
Owner:XIHUA UNIV

Preparation method of benzoylurea anthelmintic

The invention discloses a preparation method of a benzoylurea anthelmintic. The preparation method comprises the following steps: by taking 2, 5-dichloro-4-(1, 1, 2, 3, 3, 3-hexafluoropropoxy) nitrobenzene and 2, 6-difluorobenzamide as initial raw materials, reducing the 2, 5-dichloro-4-(1, 1, 2, 3, 3, 3-hexafluoropropoxy) nitrobenzene through hydrazine hydrate, reacting the 2, 6-difluorobenzamide with oxalyl chloride to generate isocyanate, and finally performing amidation reaction to obtain the lufenuron. The invention provides the preparation method of the veterinary drug lufenuron, which is green, environment-friendly, mild in reaction, less in side reaction, short in synthetic route, simple and convenient to operate and high in purity, the same green solvent is adopted, high-toxicity dichloroethane is not used as a solvent, post-treatment is simplified, and oxidation byproducts are prevented from being generated in the high-temperature distillation process of the reduzate. A mild hydrazine hydrate reduction method is adopted, so that propoxy bond breakage and dechlorination impurities generated by catalytic hydrogenation reduction are avoided, and then impurities B and C are generated in a finished product. The purity of the prepared lufenuron impurity can reach 99.8% or above, and the yield reaches 86.0% or above.
Owner:CHANGZHOU YABANG QH PHARMACHEM +1
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