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WO/2022/058916A1 |
The present invention disclosed a process for the synthesis of compound of formula (Z) or a salt thereof, wherein, R, R1, R2, R3 and R10 are as defined in the detailed description. The process further comprises the synthesis of an anthra...
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WO/2022/053994A1 |
The present invention discloses a process for the preparation of substituted pyridine compounds of formula (I), comprises a step in which vinylogous nitriles of formula (II), are obtained from substituted α,β-unsaturated nitrile compou...
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WO/2022/055104A1 |
The present invention relates to a method for recovering a nitrile-based monomer, and more particularly, to a method for recovering a nitrile-based monomer, comprising the steps of: supplying a feed stream containing a nitrile-based mono...
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WO/2022/051659A1 |
A process for producing acetonitrile, the process comprising: treating a feedstock stream comprising methanol, allyl alcohol, oxazole, acetonitrile, water, and hydrogen cyanide to remove hydrogen cyanide and produce an acetonitrile strea...
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WO/2022/051658A1 |
Provided herein are processes for the separation of acetonitrile from low-purity feedstock streams. The provided processes are particularly useful for isolating acetonitrile at high purity from chemical manufacturing waste streams that i...
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WO/2022/046360A1 |
A method for preparing a cyanoalkyl-functional silane is disclosed. The method includes removing a cyanide impurity from an olefinic nitrile before hydrosilylation of the olefinic nitrile with a hydridosilane.
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WO/2022/041462A1 |
A synthesis method for a cyclopropane compound. The cyclopropane compound has a structure as represented by general formula (I). The synthesis method comprises: reacting an olefin compound A with ethyl diazoacetate under the catalysis of...
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WO/2022/038224A1 |
A method for the preparation of an alpha-substituted carbonyl compound or an alpha- substituted nitrile compound carrying an aryl or heteroaryl group as an alpha-substituent, said method comprising reacting a sulfoxide compound S1 compri...
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WO/2022/033303A1 |
The present invention relates to a benzylamine derivative, a preparation method therefor and use thereof, and in particular, to a benzylamine derivative as represented by general formula (I), or a pharmaceutically acceptable stereoisomer...
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WO/2022/029583A1 |
A process for producing dinitrile comprises supplying a C6 organic compound, an oxidizing agent, ammonia and a diluent to a reaction zone to produce a reaction mixture and contacting the reaction mixture in the reaction zone with a heter...
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WO/2022/032269A1 |
A process for the treatment of sulfidic spent caustic, conditioned catalyst regeneration vent gas, C4 isomerization off gas, various and hydrocarbon containing liquid and gaseous streams in addition to toxic containing streams like cyani...
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WO/2022/025675A1 |
The present invention relates to an ammoxidation catalyst for propylene, a manufacturing method of the catalyst, and a propylene ammoxidation method using the catalyst. Specifically, an embodiment of the present invention provides an amm...
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WO/2022/015003A1 |
The present invention relates to a propylene ammoxidation catalyst, a preparation method therefor, and a propylene ammoxidation method using same. Specifically, provided in one implementation of the present invention is a catalyst having...
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WO/2022/006251A1 |
Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, are described herein. In particular, the present disclosure describes a process for the production of a nitrile intermedi...
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WO/2022/006254A1 |
Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, as described herein. In particular, the present disclosure describes a process for the production of a nitrile intermedia...
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WO/2022/006255A1 |
Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, are described herein. In particular, the present disclosure describes a process for the production of a nitrile intermedi...
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WO/2021/245504A1 |
The present invention relates to a process for the preparation of α-[3-[[2-(3,4-dimethoxyphenyl)ethyl]methylamino]propyl]-3,4
-dimethoxy-α-(1-methylethyl), monohydrochloride (verapamil hydrochloride, a compound of formula I), the proce...
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WO/2021/237371A1 |
The present application describes process for preparing an ortho-allylated hydroxy aryl compounds such as compounds of Formula (I) by reacting an allylic alcohol with a hydroxy aryl compound in the presence of aluminum compound selected ...
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WO/2021/238839A1 |
Disclosed is a preparation method for (4-isopropoxy-2-methyl) phenyl isopropyl ketone, comprising: reacting m-cresol and thiocyanate under the action of a catalyst to obtain a product A; reacting the product A and halogenated isopropane ...
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WO/2021/223145A1 |
Provided is an improved acetonitrile purification process for an ultra-performance liquid chromatography-mass spectrometry instrument which, by means of oxidation, rectifying absorption, drying, reflux rectification and filtering of indu...
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WO/2021/218275A1 |
Disclosed is a method for synthesizing and refining 4-fluorobenzoylacetonitrile. The method comprises the following steps: dissolving malononitrile in a solvent, adding fluorobenzene and trifluoromethanesulfonic acid to react and obtain ...
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WO/2021/209269A1 |
The present invention provides a substituted enamine compound of formula (I), and a process for producing oxazole compounds from the compound of formula (I). According to the processes of the present invention, it can produce substituted...
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WO/2021/208951A1 |
Disclosed is a β-diketone cerium (IV) compound of formula (I). The compound has a wide absorption band, is suitable for near ultraviolet-visible region curing as a photoinitiator, and has a high sensitiveness, while also having the adva...
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WO/2021/208023A1 |
The present invention relates to the technical field of acetonitrile refinement, and more specifically, relates to an acetonitrile purification process for an ultra-high performance liquid chromatography-mass spectrometer. An acetonitril...
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WO/2021/203256A1 |
Privided are antifoulant compounds or compositions used for inhibiting or reducing the deposition of ammonium salts.
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WO/2021/201046A1 |
The present invention provides: a polyhydric hydroxy resin which enables the achievement of a cured product that is excellent in terms of heat resistance, low thermal expansion properties, moisture resistance and the like, and which is u...
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WO/2021/177287A1 |
The present invention addresses the problem of providing a catalyst which exhibits high reusability and is capable of reducing the amount of residual metals in a reaction liquid in a process wherein an optically active reduction product ...
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WO/2021/174748A1 |
The present invention relates to a method for preparing a visible light catalyzed dichlorine addition product of an aliphatic olefin, comprising the following steps: using an aliphatic olefin as a substrate, using copper chloride having ...
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WO/2021/175701A1 |
A process for making a complexing agent with an enantiomeric excess of at least 60%, wherein said process comprises the following steps: (a) reacting an aqueous slurry of alanine with an enantiomeric excess of at least 60% with formaldeh...
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WO/2021/172499A1 |
There has been a need for a method for producing a purified phthalonitrile, by said method a high-purity phthalonitrile being able to be stably obtained with high yield for a long period of time, and a method for purifying a phthalonitri...
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WO/2021/153174A1 |
This composition for catalyst production is used in the production of a vapor-phase catalytic oxidation reaction catalyst or a vapor-phase contact ammoxidation reaction catalyst, wherein the composition for catalyst production is an aque...
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WO/2021/143412A1 |
Provided are a method and device for preparing adiponitrile. The preparation method of the present invention comprises the steps of a first hydrocyanation reaction, an isomerization reaction and a second hydrocyanation reaction, wherein ...
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WO/2021/145598A1 |
The present invention relates to a method for preparing an acrylonitrile dimer, the method comprising: a step (S10) for supplying an acrylonitrile monomer, a phosphorus-based catalyst, an alcohol solvent, and an ionic liquid to a reactor...
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WO/2021/138497A1 |
A process for producing a TCH stream, the process comprising: separating, in a first column, an adiponitrile process stream comprising TCH and optionally adiponitrile, to form an adiponitrile stream comprising greater than 5 wt.% adiponi...
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WO/2021/138491A1 |
The present disclosure relates generally to processes for recovering tricyanohexane (TCH) via purification of by-product or co-product streams of adiponitrile production. In particular, the present disclosure relates to a process for pur...
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WO/2021/138486A1 |
A process for producing an intermediate adiponitrile stream, the process comprising separating an adiponitrile process stream comprising less than 50 wt% adiponitrile, and optionally TCH, to form the intermediate adiponitrile stream comp...
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WO/2021/129138A1 |
Disclosed is a method for preparing an organic carboxylic ester by means of combinatorial catalysis with an aryl bidentate phosphine ligand. The method comprises subjecting a terminal olefin, carbon monoxide and an alcohol to hydroesteri...
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WO/2021/120982A1 |
The present invention relates to a method for preparing m-phenylenediamine, comprising the following steps: (1) using meta-xylene as a starting material, preparing isophthalamide; (2) reacting the isophthalamide with hypohalite or haloge...
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WO/2021/120767A1 |
The present application provides belt[n]arene[n]tropilidene, a belt[4]arene[4]tropylium compound, a belt[4]arene[4-m]tropilidene[m]dicarbonyl compound, a belt[4]arene[4-m]tropilidene[m]benzotropilidene compound, a belt[4]arene[4-m]benzot...
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WO/2021/120064A1 |
The present invention provides an ethoxy methylene malononitrile continuous synthesis method. The method comprises the following steps: malononitrile, triethyl orthoformate, and acetic anhydride are continuously introduced into continuou...
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WO/2021/116128A1 |
This invention relates to a process for producing cyanoacetates involving contacting a salt of an alkyl, alkenyl, alkynyl or aryl formyl acetate with a hydroxyl amine acid under appropriate conditions and for a time sufficient to yield a...
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WO/2021/118010A1 |
The present invention provides a method for preparing acrylonitrile dimer, comprising: a step for producing a dimerization reactant by supplying an acrylonitrile monomer, a phosphorus-based catalyst, and an alcohol solvent to a reactor s...
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WO/2021/103455A1 |
Provided are a synthesis system and method for preparing adiponitrile by means of the amination of adipic acid. The synthesis system comprises an amination reactor and a reaction rectifying column that are connected in sequence; the reac...
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WO/2021/103457A1 |
The present invention provides a synthetic system and method for preparing hexamethylenediamine by adiponitrile hydrogenation. The synthetic system comprises an adiponitrile preparation device, a microinterface intensifier, a hydrogenati...
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WO/2021/103779A1 |
The present application relates to a method for preparing 3-hydroxypropionitrile. The method for preparing 3-hydroxypropionitrile comprises: reacting acrylonitrile with a supercritical water, and separating the obtained reaction solution...
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WO/2021/105742A1 |
The present invention relates to an improved process for the preparation of Pregabalin (I), which is simple, economical, efficient, and environment friendly, commercially viable with chemical and chiral purity at least 99.95%.
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WO/2021/103456A1 |
The present invention provides a reaction system and a method for preparing an adiponitrile by means of the ammoniation of adipic acid. The reaction system comprises: an ammoniation reactor, a gas-liquid separation tank and a rectifying ...
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WO/2021/103318A1 |
The present invention discloses a P-type dopant, which is a planar aromatic compound with different numbers of fluorine atoms and cyano groups on the periphery, has the functions of adjusting the lowest unoccupied molecular orbital (LUMO...
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WO/2021/098729A1 |
Provided are a fluidized bed reactor (1) and a withdrawn hot water pipe (4) and an application thereof in acrylonitrile production, wherein the fluidized bed reactor (1) at least comprises a reaction withdrawal segment and a vertical inn...
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WO/2021/102286A1 |
The disclosure relates to the cyanocarbon compositions and processes for producing the same. The cyanocarbon compositions comprise tricyanohexane and one or more coproducts of the tricyanohexane production reaction. Exemplary coproducts ...
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