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Matches 1 - 50 out of 10,029

Document Document Title
WO/2022/166870A1
Disclosed in the present invention is a preparation method for a tetra-substituted allenoic acid compound based on a palladium catalytic system, that is, an optically active allenoic acid compound having axial chirality is directly const...  
WO/2022/164840A1
A catalyst composition for converting an alcohol to olefins, the catalyst composition comprising the following components: (a) a support (e.g., particles) comprising silicon and oxygen; (b) at least one of copper and silver residing on a...  
WO/2022/151968A1
The present invention relates to a method for purifying key intermediates of Citalopram, i.e. 4-[4-(dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl]-3-hy droxymethylbenzonitrile and a salt thereof. The method comprises dissolving crude ...  
WO/2022/153604A1
Provided is a catalyst having a platinum-group metal ion supported thereon, which comprises a platinum-group metal ion or a platinum-group metal complex ion supported on a non-particulate organic porous ion exchanger, the catalyst being ...  
WO/2022/150014A1
Disclosed herein is a material for photocatalytic hydrogen peroxide generation, said material being zirconium trisulfide ZrS3 with defects, wherein the defects comprise disulfide S2 2-vacancies and sulfide S2- vacancies. Also disclosed h...  
WO/2022/145394A1
A catalyst for a vapor-phase catalytic ammoxidation reaction, said catalyst comprising a metal oxide and a silica carrier that supports the metal oxide. With respect to this catalyst for a vapor-phase catalytic ammoxidation reaction, the...  
WO/2022/142484A1
A porous polymer having a pore volume of 0.3-2.5 cm3/g, the porous polymer comprising pores having a first pore diameter and pores having a second pore diameter, wherein the pore volume ratio of the pores having the first pore diameter t...  
WO/2022/128833A1
Suggested is a solid transition metal-ligand complex obtainable by adding a source of alkali to an aqueous suspension of transition metal halides and suitable ligands.  
WO/2022/122273A1
The invention pertains to a process for purifying ethylene cyanohydrin comprising incubating a industrial grade ethylene cyanohydrin product with at least one titanium(IV)alkoxide; and to ethylene cyanohydrin products with purities > 99 ...  
WO/2022/117421A1
Process and catalyst for producing selectively acetonitrile comprising reacting a feed stream comprising methanol and ammonia in presence of a bimetallic catalyst com-prising a support, and a first metal selected from Fe, Ni, Co and a se...  
WO/2022/108323A1
The present invention relates: to an ammoxidation catalyst exhibiting improved stability under high temperature, and excellent activity, reaction conversion, and selectivity with respect to an ammoxidation reaction of propylene; a method...  
WO/2022/092657A1
Disclosed are a system for manufacturing a phthalonitrile-based compound using a continuous process and a method for manufacturing a phthalonitrile-based compound using same, the system comprising: a first reaction unit that is filled wi...  
WO/2022/092484A1
A method for preparation of an acrylonitrile dimer according to the present invention enables an efficient recovery of an acrylonitrile dimer catalyst while reducing the process load.  
WO/2022/082329A1
Disclosed herein are processes for preparing 3-fluoro-5-(((1S,2aR)-1,3,3,4,4- pentafluoro-2a-hydroxy-2,2a,3,4-tetrahydro-1H-cyclopenta[cd] inden-7-yl)oxy)benzonitrile (hereinafter as compound (I) having the following structure).  
WO/2022/083494A1
The present application relates to a cis-para-substituted cyclohexylaminonitrile salt represented by formula (I), a preparation method therefor and use thereof as an intermediate for preparing a pesticide, and a method for preparing the ...  
WO/2022/086822A1
Disclosed herein are processes for preparing 3-fluoro-5-(((1S,2aR)-1,3,3,4,4-pentafluoro-2a-hydroxy-2,2a, 3,4-tetrahydro-1H-cyclopenta[cd]inden-7-yl)oxy)benzonitrile or a pharmaceutically acceptable salt thereof.  
WO/2022/085384A1
The present invention addresses the problem of providing a novel ruthenium complex, in which addition of a base during catalyst activation is not necessary, which exhibits excellent crystallinity and stability, for which large scale synt...  
WO/2022/080751A1
The present invention provides a preparation method of an acrylonitrile dimer, the method being capable of securing a high-purity acrylonitrile dimer and facilitating the recovery of a catalyst used in the reaction to improve process eff...  
WO/2022/080621A1
The present invention relates to a method for reacting acrylonitrile in the presence of a reaction solvent, a proton-donor solvent, and a phosphorous-based catalyst to prepare an acrylonitrile dimer, and then adding an amine-based solven...  
WO/2022/077851A1
The present invention discloses a 1,4-dihydropyridine chiral hybrid hydrogenation reagent, a preparation method and an application thereof. The 1,4-dihydropyridine chiral hybrid hydrogenation reagent has a structure represented by formul...  
WO/2022/069559A1
The present invention relates to a method for performing a condensation reaction by heterogeneous catalysis using a surface-reacted calcium carbonate catalyst and the use of a dry surface-reacted calcium carbonate as a catalyst. The cond...  
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/2022/058916A1
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...  
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...  
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...  
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...  
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...  
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.  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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 ...  
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...  
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 ...  
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...  
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...  
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...  
WO/2021/203256A1
Privided are antifoulant compounds or compositions used for inhibiting or reducing the deposition of ammonium salts.  
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...  
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 ...  
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 ...  

Matches 1 - 50 out of 10,029