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WO/2023/039940A1 |
Disclosed is a method for preparing N,N,N-tripivaloyl-1,3,5-triaminobenzene. The method comprises: step 1, using 2,4,6-trinitrotoluene as a raw material, and reacting same with hydrogen and pivalic anhydride in sequence to obtain N,N,N-t...
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WO/2023/041769A1 |
The invention relates to a method for obtaining an amine from a composition by means of distillation and a composition obtainable by that method. The invention also relates to a method for the production of an isocyanate from the composi...
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WO/2023/041768A1 |
The invention relates to a method for the processing and transport of hexane-1,6-diamine or pentane-1,5-diamine comprising the steps of: a) Providing a first composition including 60 to 98 wt.-% water and 2 to 40 wt.-% hexane-1,6-diamine...
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WO/2023/029236A1 |
The present application provides a method for synthesizing a key intermediate II-a of upadacitinib. The asymmetric hydrogenation of unsaturated carboxylic acid I-a can be catalyzed by means of Ru(OAc)2-(R)-OSPD to synthesize chiral carbo...
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WO/2023/024532A1 |
Disclosed in the present invention is a one-step method for preparing a C-N coupling product using nitroaromatic hydrocarbon and alkyl or phenylboronic acid. The method comprises: adding nitroaromatic hydrocarbon, alkyl or phenylboronic ...
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WO/2023/011117A1 |
The present invention provides an adsorbent and a preparation method therefor, a method for purifying hexamethylenediamine, and a method for preparing organic diamine and a device used therein. The adsorbent comprises a carrier and surfa...
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WO/2023/286077A1 |
The present invention relates to solid oral pharmaceutical compositions comprising varenicline or its pharmaceutically acceptable salts thereof. The present invention also relates to a process for preparing solid oral pharmaceutical comp...
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WO/2023/282382A1 |
The present invention relates to a method for preparing 2,5-diaminotoluene sulfate and, more specifically, to a method for preparing 2,5-diaminotoluene sulfate which hydrogenates 2-methyl-4-nitroaniline in the presence of a platinum/carb...
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WO/2023/281078A1 |
The present invention relates to a method for obtaining diallyldialkylammonium halide comprising the reaction between allyl halide and a dialkylamine, one of the two, preferentially both, being at least partially renewable and non-fossil...
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WO/2023/275038A1 |
A process for the catalytic hydrogenation of aromatic amines, preferably comprising methylenedianiline and/or tolylenediamine, to give the ring-hydrogenated equivalents thereof, comprising bringing a feed product comprising the aromatic ...
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WO/2023/277192A1 |
[Problem] To provide a sponge cobalt catalyst that exhibits a high catalytic activity even during long-term use. [Solution] A sponge cobalt catalyst composition comprising water, an oxo acid, and a sponge cobalt catalyst, wherein the oxo...
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WO/2023/272781A1 |
Provided are a method for preparing adamantyltrimethylammonium hydroxide, and an aqueous quaternary ammonium base solution prepared thereby, relating to the technical field of molecular sieve template agent production. The preparation me...
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WO/2023/275137A1 |
The invention relates to a process for producing aniline by catalytic hydrogenation of nitrobenzene comprising: (a) reacting hydrogen and nitrobenzene in the presence of a catalyst in a hydrogenation reactor, forming a crude reaction pro...
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WO/2022/264471A1 |
Provided is a method of catalytic hydrogenation and reduction with which a catalytic hydrogenation and reduction reaction can be performed at a high inversion rate. A method of catalytic hydrogenation and reduction in which a reactive su...
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WO/2022/259265A1 |
The present invention relates to a process for the preparation of 2,3-dichloro-4-hydroxyaniline of formula I from 2,3-dichloronitrobenzene of formula III. The present invention also relates to a process for the purification of 2,3-dichlo...
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WO/2022/260025A1 |
Provided are a method and a device for efficiently producing a halogen oxyacid solution that has good quality and is industrially superior. Specifically, provided are a method and a device for producing halogen oxyacid, the method compri...
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WO/2022/257957A1 |
The present invention relates to a use of γ,δ-unsaturated oxime ester compounds of formula (I) as photoinitiators, wherein variables are as defined in the description. The present invention further relates to a preparation method for t...
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WO/2022/253610A1 |
The invention relates to a method for the production of IPDA comprising the steps of: V. converting IPN with ammonia and hydrogen to IPDA, VI. removing hydrogen and/or ammonia from the effluent from step I VII. separating the effluent fr...
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WO/2022/253890A1 |
The present invention relates to a process for preparing aniline or an aniline derivative, comprising the steps of (I) providing aminobenzoic acid, (II) decarboxylating the aminobenzoic acid to aniline in the presence of an inorganic het...
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WO/2022/246866A1 |
A treatment method for an acesulfame potassium waste liquid. The acesulfame potassium waste liquid is a waste liquid generated in preparation of acesulfame potassium by adopting a diketene-sulfur trioxide method. The treatment method com...
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WO/2022/246870A1 |
A method for preparing an acetoacetamide-N-sulfonic acid triethylamine salt, the method comprising: an amination reaction step, involving: dissolving sulfamic acid in first dichloromethane to obtain a first reaction solution; dissolving ...
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WO/2022/246863A1 |
Provided is an method for treating an acesulfame potassium waste liquid, the method comprising: adding first liquid ammonia into an acesulfame potassium waste liquid, and subjecting same to a neutralization reaction in a closed reactor u...
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WO/2022/246871A1 |
A method for preparing an acetoacetamide-N-sulfonic acid triethylamine salt, the method comprising: dissolving sulfamic acid in first dichloromethane to prepare a first reaction solution; dissolving triethylamine in second dichloromethan...
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WO/2022/246864A1 |
Provided is a treatment method for an acesulfame potassium waste liquid, that is, a waste liquid produced in the preparation of acesulfame potassium by a diketene-sulfur trioxide method, and the method comprises the following steps: a mo...
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WO/2022/241690A1 |
It is related to a process for purifying organic amines. The process comprises (a) providing an organic amine to a first vessel(5), the organic amine having a normal boiling point at one bar; (b) filling the first vessel(5) with inert ga...
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WO/2022/230656A1 |
Provided is a method for producing a methyl-added compound, the method comprising a step for methylating a dinitrile compound represented by formula (1) in the presence of potassium carbonate and dimethyl carbonate to obtain the methyl-a...
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WO/2022/229487A1 |
The present invention relates to a method for obtaining products with a high added value, such as acetals, dithioacetals and aminals, from dichloromethane by means of the reaction thereof with an alkaline salt or compound in the presence...
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WO/2022/223659A1 |
There is provided a method for the isolation of an amine from an aqueous solution thereof, comprising the steps of: a) contacting the aqueous solution of the amine with an adsorbent functionalized with carboxyl groups; b) removing water ...
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WO/2022/218705A1 |
A process for the continuous production of amines, the process comprising reacting a primary or secondary alcohol with ammonia in the presence of hydrogen and a heterogeneous hydrogenation catalyst in the gas phase using a recycle gas mo...
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WO/2022/213609A1 |
A preparation method and application of a Pt-based alloy/MOFs catalyst having high hydrogenation selectivity. A Pt alloy/MOFs structure in which Pt alloy particles are uniformly loaded on the surface of MOFs is prepared by means of a one...
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WO/2022/215002A1 |
The present disclosure provides methods for producing a compound having a chemical formula of Formula I, wherein R1 and R2 are independently a i) linear or branched or cyclic, ii) saturated or unsaturated, and iii) substituted or unsubst...
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WO/2022/208545A1 |
The present invention discloses a process for the hydrogenation of imines of Formula I by palladium-based catalyst to provide product of Formula II with more than 95% conversion of substrate and more than 95% of desired hydrogenated prod...
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WO/2022/199226A1 |
A method for preparing 3,3',4,4'-tetraaminobiphenyl, the method comprising the following steps: subjecting 4,4'-biphenol and N,N-dimethylsulfamoyl chloride to an esterification reaction in a specified solvent at 40-70°C to obtain 4,4'-b...
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WO/2022/199724A1 |
The present invention provides sulfide coated copper iron sulfide nanocrystals. A method for preparation of the sulfide coated copper iron sulfide nanocrystals is disclosed which contains the following steps: - synthesizing oleylamine co...
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WO/2022/201155A1 |
The present invention relates to a novel nitration process of 2- chloro -4- fluorobenzoic acid to 2-chloro-4- fluoro-5-nitrobenzoic acid, 2-chloro-4- f luoro-3 -nitrobenzoic acid and 3, 5-dinitro-2-chloro-4- fluorobenzoic acid; purifying...
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WO/2022/193368A1 |
The present invention belongs to the technical field of medicinal chemistry, and disclosed are a trans-amantadine derivative or a salt thereof, and a preparation method therefor, a composition thereof and the use thereof. Provided in the...
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WO/2022/193369A1 |
The present invention relates to the technical field of pharmaceutical chemistry. Disclosed is a use of a trans amantadine derivative having a structure as represented by formula I or a pharmaceutically acceptable salt thereof in the pre...
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WO/2022/184614A1 |
The present invention relates (i) to a method for producing a doped copper-tetraammine-salt-based hydrogenation catalyst suitable for the hydrogenation of an aromatic nitro compound such that an aromatic amine is obtained, the hydrogenat...
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WO/2022/185877A1 |
The present invention provides a method for efficiently producing a hydrogenated compound under mild conditions. A catalyst composition which contains a Lewis acid and a metal nanoparticle catalyst that is obtained by loading a carrier...
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WO/2022/179864A1 |
A process for the production of polyalkylene-polyamines, the process comprising the condensation of an alkylene-diamine in the presence of hydrogen and a heterogeneous catalyst comprising copper and nickel.
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WO/2022/175153A1 |
A process for the manufacture of isophorone diamine (I PDA), comprising the steps of: a) providing a feed stream comprising trans-IPDA, cis-IPDA, isophorone nitrile amine (IPNA), components having a lower boiling point than trans-IPDA an...
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WO/2022/175132A1 |
A process for the preparation of polyfluoroalkylamines wherein polyfluoroalkylalcohols are reacted with an imide in the presence of SO2F2 and an acid scavenger in a first step and the compound obtained is then reacted with an acid, base ...
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WO/2022/172279A1 |
The present invention discloses a corrosion inhibiting dioleyl compound, a method for synthesizing the same and a corrosion inhibiting film forming amine formulation prepared from the said dioleyl compound. Wherein, the said corrosion in...
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WO/2022/168979A1 |
The present invention relates to a polyimide compound represented by formula (I) (in the formula, each symbol has the same meaning as disclosed in the specification).
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WO/2022/167387A1 |
The invention describes a process for producing carbon monoxide which is intended to be incorporated into a process for producing isocyanates by synthesis (1) of phosgene (1a) from carbon monoxide (9a) and chlorine (12b), reaction (2) of...
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WO/2022/149618A1 |
The present invention provides a method for producing a compound having alkylated acidic functional groups. The method includes alkylating acidic functional groups by reacting, in a mixture containing a compound having two or more types ...
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WO/2022/136206A1 |
A Process for the Preparation of N-(bis(4-methoxyphenyl)methyl)-6-oxo-2-(pyridazin-3-yl)-1,6-
dihydropyrimidine-5-carboxamide with improved reaction conditions and reduced use of toxic reagents and solvents.
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WO/2022/133594A1 |
The present disclosure relates to methods for the hydroaminoalkylation of an olefin. Such methods can comprise reacting the olefin with a secondary amine in the presence of a catalyst of Formula (I). The present disclosure also relates t...
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WO/2022/140654A1 |
The present disclosure relates to compositions and methods related to bicyclo[2.2.1] heptanamine-containing compounds and salts thereof.
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WO/2022/129117A1 |
The present invention relates to compounds of a formula (I), (II) or (III), processes for preparing compounds of this type, electronic devices containing one or more of these compounds, and the use of these compounds in electronic devices.
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