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WO/2023/094418A1 |
The present application relates to a metal-free photocatalytic method and system for converting polystyrene into benzoic acid, using a metal free catalytic system. In particular, the method and system described herein allow to generate b...
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WO/2023/094302A1 |
The present invention relates to new aliphatic polyamines with methyl substituents for use in curing of epoxy resins as well as to the preparation of such aliphatic polyamines. It further relates to the corresponding epoxy resin composit...
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WO/2023/090298A1 |
One embodiment of the method for producing a cyclic compound of the present invention is characterized by having a step for obtaining a cyclic compound by applying, to a starting material containing a cyclic carboxylic acid compound, a h...
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WO/2023/078824A1 |
The present invention relates to compounds of the spiro-(indane- fluorene) type of formula (I), in particular those bearing a primary amino group and the corresponding diarylamino compounds. The invention further relates to methods for p...
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WO/2023/080257A1 |
The method for producing isocyanate compounds comprises: a step (1) for obtaining an N-substituted carbamate compound by reacting a primary amine compound and a carbonate derivative, while removing by-product compounds that have a boilin...
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WO/2023/071891A1 |
The present invention relates to the field of fine chemical industry. Specifically disclosed are a method for synthesizing 2-methylpyridine from aniline, and a method for selectively and continuously producing 2-methylpyridine and diphen...
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WO/2023/077079A1 |
Disclosed herein are embodiments of methods for preparing aminated or alkylaminated CNTs wherein the aminated or alkylaminated CNTs are obtained in a reaction by reacting the CNTs with an aminating or alkylaminating reagent in a non-haza...
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WO/2023/070752A1 |
A carbon or nitrogen-modified catalyst, a preparation method therefor and an application thereof. A chemical reaction occurs between a metal-based active center and a reducing carbon-containing gas or a reducing nitrogen-containing gas, ...
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WO/2023/063843A1 |
The invention relates to the field of producing isocyanates, in particular, to a method for producing (poly)diaminodiphenylmethane used to obtain polyisocyanates. The invention relates to a method for changing a molecular weight distribu...
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WO/2023/064901A1 |
Provided according to embodiments of the invention are methods of forming an amino-functionalized compounds by hydroaminomethylation. Methods include the steps of hydroformylating an alkene (or alkyne) to produce an aldehyde; condensing ...
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WO/2023/063852A1 |
The invention relates to the field of producing isocyanates, in particular, to a method for producing (poly)diaminodiphenylmethane used to obtain polyisocyanates. The invention relates to a method for changing a molecular weight distribu...
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WO/2023/062633A1 |
This invention is directed to a catalytic hydrogenation process for the preparation of l-(4- (benzyloxy)-3-(hydroxymethyl)phenyl)-2-(tert-butylamino)etha
nol, which is an intermediate for the preparation of Salbutamol.
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WO/2023/063244A1 |
The present invention provides: a solid catalyst which is used when ammonia and a methylation agent are reacted with each other so as to suppress the generation of trimethyl amine, while ensuring a suitable conversion rate of the methyla...
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WO/2023/059903A1 |
The present invention relates to methods for synthesizing C-X-C receptor type 4 (CXCR4) inhibitor mavorixafor and to intermediates thereto.
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WO/2023/056685A1 |
Provided is a catalyst for reductive amination and a preparation method therefor and the use thereof. The catalyst comprises a structure formed by a metal-based active center and a mercapto donor by means of a chemical bond, and the meta...
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WO/2023/050002A1 |
The present invention provides a general method, for an environmentally-friendly, renewable, chemical synthesis process, for the synthesis of amines by thermal, catalyzed, decarboxylation of α-amino acids, and recovery of the amines as ...
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WO/2023/048237A1 |
The present invention is a compound represented by general formula (A) [in the formula, G is -SO2R1, -CO-G1, or -C(CH3)-Ph; R1 is a C1-30 alkyl group which may have a halogen atom or a phenyl group which may have a substituent; G1 is a h...
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WO/2023/039941A1 |
Provided are an N,N,N-triacyl-2,4,6-triaminotoluene compound nucleating agent, and a preparation method therefor and a use method thereof. The nucleating agent is used for polymer nucleation at high temperatures, and can effectively redu...
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WO/2023/043794A1 |
Described herein are processes for preparing psilocin and psilocybin and chemical intermediates used in the synthetic processes.
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WO/2023/041781A1 |
A chemical process for preparing at least one aromatic isocyanate, said process comprising n chemical sub-processes sp(i), wherein a sub-process sp(i) is carried out in a chemical processing sub-unit U(i), i=1...n, n≥1, wherein during ...
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WO/2023/041771A1 |
The invention relates to a method for the removal of water from and transport of at least one aliphatic diamine comprising the following steps: a) providing a first composition including 60 to 98 wt.-% water and 2 to 40 wt.-% of the at l...
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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/2022/224741A1 |
[Problem] In hydrogenating an aromatic halonitro compound, to improve the yield of a halogenated aromatic amine that is the target product without requiring a dehalogenation inhibitor, while suppressing the formation of a nitroso compoun...
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