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WO/2016/058882A1 |
The invention relates to a process for the preparation of a compound of formula I (I), wherein R1 is hydrogen, fluoro or chloro; which process comprises a) reacting a compound of formula II (II), wherein R1 is hydrogen, fluoro or chloro;...
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WO/2016/050759A1 |
The invention relates to a method for producing dinitrotoluene, comprising the following steps: a) nitrating toluene with a mixture of nitric acid and sulfuric acid and subsequently separating a sulfuric-acid-containing aqueous phase tha...
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WO/2016/045415A1 |
A method for asymmetrically catalyzed synthesis of a γ-nitropyrazole amide compound, where a nitroalkene and an α,β-unsaturated pyrazole amide are employed as raw materials, a complex formed by a chiral amine oxide and a rare earth me...
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WO/2016/015479A1 |
The present invention relates to the fields of organic synthesis and pharmaceutical chemistry, and specifically relates to a β-elemene 13-position derivative (I) or (II), wherein R1 and R2 are defined in the description. Also disclosed ...
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WO/2016/005070A1 |
The present invention relates to a method for purifying raw dinitrotoluenes resulting from dinitration of toluene in the presence of a nitric acid/sulfuric acid/nitrating acid mixture, and a device or plant for performing the method, and...
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WO/2015/197521A1 |
The present invention relates to a process for the continuous production of nitrobenzene by the nitration of benzene with nitric acid and sulfuric acid under adiabatic conditions, not the entire production plant being shut down during a ...
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WO/2015/197522A1 |
The invention relates to methods for producing chemical products, wherein the one or more feed materials are reacted to form a chemical product or a chemical composition. The invention further relates to plants for performing such method...
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WO/2015/189374A1 |
The invention relates to a method for producing aryl carboxylic acid esters and heteroaryl carboxylic acid esters Ar-COOR', wherein an aryl diazonium salt or heteroaryl diazonium salt Ar-N2+-X- at least partially dissolved in an alcohol ...
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WO/2015/189068A1 |
The present invention relates to the preparation of β-substituted γ-amino carboxylic acids, preferably in enantiomerically enriched or even enantiomerically pure form, by a one-pot conversion of a β-substituted γ-nitro dicarboxylic a...
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WO/2015/189862A1 |
Described herein is the general synthesis of chiral amine from vinyl nitro compounds using Josiphos catalyst. The process is applied to develop a novel route to Sitagliptin (a DPP-IV inhibitor).
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WO/2015/184229A1 |
A method for preparing 3-methyl-2-nitrobenzoic acid is disclosed wherein 1, 3 -dimethyl-2-nitrobenzene is combined with an oxidation catalayst in the presence of an oxygen source and an initiator, provided that less than 99% of the 1,3 -...
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WO/2015/173161A1 |
The invention concerns a method for producing toluenediamine by hydrogenation of dinitrotoluene in the presence of a catalyst, a dinitrotoluene being used as starting material and being processed by applying an electrical voltage.
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WO/2015/170688A1 |
Provided is a metal-supported catalyst comprising a porous coordination polymer as a carrier (a metal-supported porous coordination polymer catalyst), said catalyst having an excellent catalytic activity and being applicable to various k...
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WO/2015/166827A1 |
A method for producing an optically active anti-1,2-nitroalkanol compound, the method including a supplying step for continuously supplying an aldehyde compound and a C2 or higher nitroalkane compound to a reaction container, a reaction ...
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WO/2015/159905A1 |
A compound represented by formula (1) (wherein X represents a chlorine atom, a bromine atom or an iodine atom) can be produced by: a step wherein a compound represented by formula (2) (wherein R1a represents an alkyl group having 1-6 car...
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WO/2015/159904A1 |
A compound represented by formula (1) can be produced by: a step wherein a compound represented by formula (2) is reacted with a compound represented by formula (3), thereby obtaining a compound represented by formula (4); a step wherein...
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WO/2015/134703A1 |
A process for synthesizing isooctyl nitrate in a continuous flow reactor comprises flowing a H2SO4-HNO3 mixture within a flow reactor, flowing isooctyl alcohol into said flow reactor so as to mix the isooctyl alcohol with the H2SO4-HNO3 ...
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WO/2015/129592A1 |
Position-1 halogen can be selectively reduced by reacting a compound represented by formula (3) (in the formula, X represents a chlorine atom, bromine atom, or iodine atom) and hydrogen in the presence of a heterogeneous transition metal...
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WO/2015/129630A1 |
[Problem] To provide a novel method for producing (S)-2-(5-chloro-2-nitrophenyl)-4-cyclopropyl-1,1,1-trifluoro
but-3-yne-2-ol. [Solution] An alkynyl ketone represented by belowmentioned formula (1) is reacted with (trifluoromethyl) trime...
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WO/2015/129813A1 |
The present invention provides: a deuteration method that is both cost effective and has an excellent deuteration rate; a method for selectively replacing a leaving group of an aromatic compound with deuterium; and a deuteration catalyst...
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WO/2015/098717A1 |
A nitro compound represented by formula (1) which is a raw material for producing a compound represented by formula (7) can be produced by reacting at least one type selected from the group consisting of a compound represented by formula...
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WO/2015/090122A1 |
The present invention relates to a phenyl benzyl ether derivative and a preparation method and use thereof, and a part of the compound act as an A beta plaque imaging agent after being radioactively nuclide labelled, and the phenyl benzy...
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WO/2015/081827A1 |
Disclosed is a method for synthesizing a α-aryl, heteroaryl or alkenyl-α,α-2-fluoro allyl structure by palladium catalysis. Specifically, in the method of the present invention, a compound of formula A and a compound of formula B synt...
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WO/2015/059185A1 |
A process for scrubbing a crude mixture which is obtained in the nitration of toluene after separating off the nitrating acid and comprises dinitrotoluene, nitric acid, nitrogen oxides and sulfuric acid, which comprises two scrubbing ste...
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WO/2015/032706A1 |
A process for the preparation of dintrotoluene which comprises (a) nitrating toluene with a nitrating acid, wherein said nitrating acid is a mixture of nitric acid and sulfuric acid, in one or more nitration steps, and separating the nit...
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WO/2015/027773A1 |
The present invention relates to an application of dimethylaminopyridine (DMAP) hydrochloride serving as recyclable catalyst in an acylation reaction (as represented by equation I). The application comprises: dissolving DMAP into a nonpo...
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WO/2015/022110A1 |
The invention relates to a method and to a device for removing contaminants arising during the production of aliphatic or alicyclic nitric acid esters, in particular for removing contaminants from nitrated crude nitric acid esters, which...
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WO/2015/011729A1 |
The invention discloses a process for continuous flow of liquid phase nitration of alkyl benzene compounds in micromixer and tubular reactors with better control on the product profile which comprises reacting alkyl benzene compounds wit...
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WO/2015/012067A1 |
A separating material superior to conventional separating materials, and a separation method are provided, with which 1, 3-butadiene is selectively separated and recovered from a mixed gas including 1, 3-butadiene and C4 hydrocarbons oth...
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WO/2015/005298A1 |
The purpose of the present invention is to provide a high purity optically active bicyclic γ-amino acid derivative. The means for accomplishing this purpose is a method for producing a compound represented by general formula (VII), or a...
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WO/2015/000935A1 |
It has been found that a compound of formula (I) R-CF2-O-Ar, wherein R is a fluorinated alkyl group or an optionally substituted aromatic or heteroaromatic group and Ar is an optionally substituted aromatic or heteroaromatic group, can b...
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WO/2014/208296A1 |
The purpose of the present invention is to provide an economically favorable, industrialization-suitable method for manufacturing nitrobenzene compounds of general formula (1). A method for manufacturing nitrobenzene compounds of general...
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WO/2014/202765A1 |
The present invention provides an asymmetric and economic synthesis of 8-chloro-1-methyl-2,3,4,5-tetrahydro-1 H-benzo[d]azepine via novel intermediates applying an asymmetric enzymatic, biomimetic or catalytic reduction. The present inve...
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WO/2014/202031A1 |
The present invention relates to a method for high-selectivity co-production of adipic acid and nitrocyclohexane, utilizing an oxynitride NOx as an oxidant and nitrating agent to transform in one step with high selectivity cyclohexane to...
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WO/2014/195973A2 |
The present invention discloses an improved process for the liquid phase nitration of aromatic compounds catalyzed by WO3 supported on mesoporous silica support, at low temperature, with high conversion and selectivity.
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WO/2014/196542A1 |
In the present invention, in an optically active compound production method that uses a column reactor, the column reactor is produced by filling asymmetric catalyst particles in a column for the column reactor, and a compound to be reac...
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WO/2014/180678A1 |
The invention relates to a method for producing nitroalkanes by reacting at least one alkane with at least one nitrating agent in the gas phase, wherein the nitration is carried out in a microstructured reaction zone having parallel chan...
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WO/2014/177450A1 |
The invention relates to a continuously operated adiabatic process for producing nitrobenzene by the nitration of benzene with nitric acid and sulfuric acid. According to said method, the diluted sulfuric acid obtained after successful n...
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WO/2014/177517A1 |
It relates to a preparation process of 2'-(benzyloxy)-3'-nitro-1,1'-biphenyl-3- carboxylic acid or a salt thereof comprising reacting 2-(benzyloxy)-1-bromo- 3-nitrobenzene with a either 3-carboxyphenylboronic acid or a salt thereof or a ...
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WO/2014/174499A1 |
The present invention relates to a method for extracting hydrophilic mineral and organic acids from aromatic compounds, in particular nitroaromatic compounds, preferably crude mononitrobenzene (MNB), by purifying and refining these compo...
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WO/2014/170309A1 |
The present invention relates to a method for reprocessing alkaline wastewater produced during the cleaning of crude nitrobenzene obtained by the nitration of benzene, wherein (i) the alkaline wastewater is heated to a temperature of 150...
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WO/2014/170250A1 |
The invention relates to a method for reprocessing alkaline wastewater produced during the cleaning of crude nitrobenzene obtained by the nitration of benzene, wherein (i) the alkaline wastewater is heated at a pressure greater than atmo...
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WO/2014/158445A1 |
Provided is a process for making (2-nitro)alkyl (meth)acrylate compounds of formula I: wherein n, R, R1, R2, R3, R4, R6, R7, and n are as defined herein, by a transesterification reaction between a nitroalcohol compound and a (meth)acryl...
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WO/2014/126008A1 |
A catalyst which is obtained by mixing a compound represented by structural formula (1), a nitroalkane compound, a neodymium-containing compound, a sodium-containing compound and a carbon structure.
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WO/2014/103947A1 |
The present invention provides: a halogenated aniline represented by formula (I) (wherein X1 and X2 independently represent a chlorine atom, a bromine atom or a iodine atom); a method for producing the halogenated aniline; and others.
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WO/2014/094270A1 |
Proposed is a separation method in a toluene to dinitrotoluene process, wherein said method with a first process step comprising feeding a toluene comprising first stream (1) and a nitric acid comprising second stream (2) into a first re...
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WO/2014/095469A1 |
Proposed is a separation method in a toluene to dinitrotoluene process, wherein said method with a first process step comprising feeding a toluene comprising first stream (1) and a nitric acid comprising second stream (2) into a first re...
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WO/2014/099246A1 |
The present invention provides a process for producing nitroalkanes by dehydroxylation of nitroalcohols. This provides an alternate reaction route for makingnitroalkanes, such as 2- nitropropane and its derivatives.
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WO/2014/086065A1 |
Provided is a method for producing an alkyl nitrate, using a centrifugal extraction device as a separator for the esterification reaction, feeding a mixed acid solution containing sulfuric acid and nitric acid from a heavy phase inlet of...
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WO/2014/073003A1 |
The present invention relates to the single-step process for the synthesis of aryl olefin compounds of Formula (1) by reacting aryl aldehydes with alkyl aldehydes in presence of malononitrile and acid or base or salt, optionally in prese...
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