Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 1 - 50 out of 1,479

Document Document Title
WO/2022/160169A1
A bimetallic catalyst, a preparation method therefor and the use thereof in the preparation of a polyether polyol. A new 3-OP tetradentate ligand bearing 1 P and 3 Os is coordinated with a metal to form a tetradentate chelate, which is t...  
WO/2022/146324A1
This invention relates to the synthesis of pyrimidine-4 (1H)-one derivatives from Meldrum's acid, carbonyl compounds (aldehyde/ketone), and guanylhydrazone derivatives and tautomers, enantiomers, and salts thereof.  
WO/2022/140654A1
The present disclosure relates to compositions and methods related to bicyclo[2.2.1] heptanamine-containing compounds and salts thereof.  
WO/2022/126942A1
The present invention relates to the field of synthesis and preparation of medical intermediates. Disclosed is a synthesis method for a medical intermediate cyclopropyl-containing chiral amine hydrochloride. According to the present inve...  
WO/2022/110930A1
The present invention provides a method for ammoximation of macrocycloalkanone, comprising the following steps: adding hydrogen peroxide, ammonia water, a hydroxylamine stabilizer, an oximation catalyst, a solvent, and a macrocycloalkano...  
WO/2022/073525A1
A method and device for integrating an ammoximation reaction and separation. In the method, titanium-silicon molecular sieve is used as a catalyst; an ammoximation reaction of a ketone, hydrogen peroxide and ammonia is carried out to gen...  
WO/2022/069553A1
The invention relates to a method for producing benzaldehyde oximes of the general formula (I) and to the use thereof as important precursors for the synthesis of agrochemical and pharmaceutical active substances.  
WO/2022/064454A1
The present invention discloses a process for the synthesis of compound of formula (VII) or a salt thereof, wherein, R, R1, R2, R3, R4a and R4b are as defined in the detailed description. The process further comprises the synthesis of an...  
WO/2022/034426A1
The present invention relates to a process for the preparation of a key intermediate and other intermediates useful for the synthesis of Siponimod, a drug used for the treatment of multiple sclerosis. Object of the invention are also sai...  
WO/2021/239568A1
The present invention relates to a process for the preparation of substituted 4-(N'-hydroxy- carbamimidoyl)benzoic acids, which can be obtained by nitrilase catalyzed hydration of substituted terephthalonitriles of formula (II) in an aqu...  
WO/2021/212460A1
Disclosed by the present application is a method for autocatalytic preparation of 2,5-furandicarboxaldehyde oxime. The method for the autocatalytic preparation of the 2,5-furandicarboxaldehyde oxime comprises: reacting 2,5-furandicarboxa...  
WO/2021/208202A1
The present invention provides a micro-interface enhanced cyclohexanone ammoximation reaction system and method. The system comprises an oximation reactor, a reaction clear liquid buffer tank, a tail gas absorption tower, and a micro-int...  
WO/2021/208201A1
The present invention provides an external micro-interface ammoximation reaction system and method. The external micro-interface ammoximation reaction system comprises an oximation reactor, a reaction clear liquid buffer tank, a tert-but...  
WO/2021/208199A1
The present invention provides a reaction system and method for ammoximation and tert-butyl alcohol recovery. The reaction system comprises an oximation reactor, a reaction clear liquid buffer tank, a tail gas absorption tower, a tert-bu...  
WO/2021/208200A1
The present invention provides a built-in micro-interface ammoximation reaction system and method, the system comprising an oximation reactor, a reaction supernatant buffer tank, a tert-butanol recovery tower, an extraction tank, a water...  
WO/2021/190567A1
Disclosed in the present invention are a diphenyl sulfide ketone oxime ester compound, a preparation method therefor, a composition and use thereof. A diphenyl sulfide ketone oxime ester photoinitiator has the characteristics of high sen...  
WO/2021/171301A1
A process for preparation of 3-Trifluoromethyl acetophenone oxime of formula I comprising the steps of: a) Reacting an isomeric mixture of halo benzotrifluoride with Mg metal in an organic solvent in presence of a catalyst to obtain a Gr...  
WO/2021/122955A1
The invention concerns a method for preparing a mixture containing cyclohexanol and cyclohexanone, comprising the step of hydrogenating cyclohexyl hydroperoxide in cyclohexane in the presence of a Raney nickel catalyst to give cyclohexan...  
WO/2021/114218A1
Provided are mycosporine-like amino acids Porphyra-334 and Shinorine and a method for extracting Porphyra-334 and Shinorine from seaweeds. The method comprises the following steps: leaching, flocculating, filtering, performing chromatogr...  
WO/2021/117053A1
The present invention relates to an improved process for preparing aldoximes of formula (I) with high purity and high yield. The improved process for preparing aldoxime is fast, simple, highly efficient, and reproducible. The improved pr...  
WO/2021/096811A1
Disclosed herein are tucaresol derivative compound and composition containing the same. Also disclosed herein are methods of enhancing immune response in a subject by administering the tucaresol derivative compound or by co-administering...  
WO/2021/082278A1
Disclosed are a class of fluorine-containing α-diimine nickel complexes for preparing a polyolefin elastomer and intermediates thereof. The class of complexes have a single catalytic active center, the molecular weight of a polymer can ...  
WO/2021/084185A1
The invention relates to a method for producing a compound comprising at least one imine group, the method comprising a step of reaction between a first compound comprising at least one amine group and a second compound comprising at lea...  
WO/2021/035176A1
The invention provides a compound of formula (I): wherein R1, R2, and R3 have any of the values described in the specification, as well as compositions comprising a compound of formula (I), methods for preparing compounds of formula (I),...  
WO/2021/000467A1
Disclosed are a fluorescent compound for the detection of isocyanate substances, a preparation method therefor and the use thereof as a test-paper-type detection probe. The fluorescent compound is 2,4-di(((4'-(diphenylamino)-[1,1'-biphen...  
WO/2020/240391A1
The present invention discloses an improved process for the preparation of bromo-formimine compounds. More particularly, the present invention discloses an improved process for the preparation of bromo-formimine compounds, wherein bromin...  
WO/2020/202940A1
Provided is a catalytic mixture with sufficient catalytic efficiency, wherein pressure loss is small when the catalytic mixture fills a flow reactor and a reactive solution is caused to flow therethrough, and the catalytic efficiency and...  
WO/2020/169047A1
Disclosed in the present invention is a 1,1-dicyanohydrazone compound having a novel structure, the structure being as shown in general formula I. See the description for the definitions of each substituent in the formula. The compound o...  
WO/2020/132819A1
Disclosed is a method for preparing (1R,3S)-3-aminocyclopentanol hydrochloride. The method comprises using amide formed by chiral carboxylic acid and hydroxylamine as a chiral source, quickly obtaining a chiral Diels-Alder reaction produ...  
WO/2020/124557A1
Disclosed are a large steric hindrance asymmetric (α-diimine) nickel olefin catalyst based on vinylidene acenaphthoquinone as a skeleton, and preparation method and application thereof. The structural formula of the large steric hindran...  
WO/2020/129087A1
Disclosed herein is a process for the manufacture of (R)-phenylacetylcarbinol ((R)-PAC), (1R,2S). Ephedrine and its salts, (1R,2S)-norephedrine and its salts and 1-(Phenyl/Substituted phenyl)-2-(amino/alkylamino/dialklyamino) propan-1-ol...  
WO/2020/124556A1
Disclosed are a large-steric-hindrance asymmetric (alpha-diimine)nickel olefin catalyst based on 1,2-benzoacenaphthenequinone as a skeleton, and a preparation method and an application thereof. The structural formula of the large-steric-...  
WO/2020/130605A1
The present invention relates to a laurolactam preparation method and a synthesis apparatus, and epoxidation and a rearrangement reaction are carried out in the conversion of cyclododecene into cyclododecanone so that the preparation met...  
WO/2020/090658A1
The present invention provides a method for synthesizing a contiguous tetrasubstituted carbon imine compound such as a non-natural amino acid having α, β-contiguous tetrasubstituted carbon atoms, which has an extreme steric hindrance. ...  
WO/2020/082817A1
The present application pertains to the technical field of pharmaceutical compounds and drugs, relates to an oxime-based naphthoquinone compound, a preparation method therefor and the uses thereof, and specifically relates to a formula (...  
WO/2020/078898A1
The present invention provides an improved process for the continuous production of an essentially pure oxime, wherein the oxime is formed by reacting hydroxylamine with an aldehyde or a ketone, wherein the hydroxylamine is formed in an ...  
WO/2020/078884A1
The present invention provides a process for the production of an oxime, the process comprising: a. converting an aldehyde or a ketone by a chemical reaction into an oxime at a temperature of 15 to 115 °C, whereby a reaction mixture com...  
WO/2020/050368A1
The purpose of the present invention is to provide: a method for preparing a Vilsmeier reagent, that can be carried out safely, easily, and at a low cost; and a method for producing an aromatic aldehyde or an aromatic ketone, a carboxyli...  
WO/2020/010055A1
A process for the preparation of amino alcohols includes condensing a compound of Formula (II), a stereoisomer, a tautomer, or a salt thereof with a compound of Formula (IlIa) or Formula (Illb), a stereoisomer, a tautomer, or a salt ther...  
WO/2019/230831A1
This method comprises steps: (i) reacting a compound represented by formula (A) with hydrazine to produce a compound represented by formula (B); (ii) reacting the compound represented by formula (B) with formaldehyde to produce a compoun...  
WO/2019/221192A1
The present invention provides a method for producing an amino acid aminoalkyl ester or an inorganic acid salt thereof by reacting a compound represented by general formula (I) or a compound represented by general formula (III), or a sal...  
WO/2019/210742A1
The present invention relates to a novel acrylic ketone oxime ester compound, a preparation method therefor, and a composition thereof. The acrylic ketone oxime ester compound of the present invention can initiate the occurrence of a pol...  
WO/2019/208043A1
[Problem] To provide a method for simply producing various N-unprotected imine compounds inexpensively and safely. [Solution] This method for producing a N-unprotected imine compound comprises reacting a ketone compound and a nitrogen so...  
WO/2019/170538A1
The present invention relates to a method for producing an isomer-enriched mixture of 3S- and 3R-caranon of 3-caran epoxide, a 3S-caranon obtained therefrom, a method for producing 3S-caranlactam from 3-carene, a method for producing 3R-...  
WO/2019/142952A1
Disclosed are a photoactive agent, a method for manufacturing the photoactive agent, and a method for manufacturing a liquid crystal aligning agent, wherein the photoactive agent has a N-O-C=O-C band and is mixed with a liquid crystal al...  
WO/2019/129815A1
The invention provides a method for synthesizing a compound of formula (I) wherein each R independently represents an optionally substituted aryl, heteroaryl, alkyl, perfluoroalkyl, cycloalkyl, alkoxy, aryloxy, acyl, carboxyl, hydroxyl, ...  
WO/2019/122204A1
Disclosed are processes for the manufacture of pyrazole compounds of formula (I) and their application in the manufacture of pyrazole derivatives, in particular in processes for the manufacture of pharmaceutically or agrochemically activ...  
WO/2019/122194A1
Process for the manufacture of iminium compounds and their application in the manufacture of pyrazole derivatives The present invention concerns processes for the manufacture of iminium compounds and their application in the manufacture ...  
WO/2019/122164A1
The present invention concerns processes for the manufacture of pyrazole carboxylic derivatives and precursors thereof.  
WO/2019/117255A1
The present invention addresses the problem of providing an industrially preferable, economical, and environmentally friendly method for producing the 4,5-dihydroisoxazole represented by a formula (3). The present invention enables the c...  

Matches 1 - 50 out of 1,479