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WO/1998/029396A1 |
The invention relates to ionic compounds in which the anionic load has been displaced, and the uses of these compounds. A compound disclosed by the invention comprises an anionic portion combined with at least one cationic portion M?+mï¿...
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WO/1998/029358A2 |
Disclosed is a method for grafting a polymer onto the surface of a carbonate material with carboxyl, amine, and/or hydroxyl functions on its surface. Said material is placed in suspension in a solution including the polymer to be grafted...
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WO/1998/015509A1 |
Method of performing alkylation or acylation reactions of aromatic substrates under supercritical or near-critical reaction conditions. In particular, a method of performing Friedel-Crafts alkylation or acylation reactions is disclosed u...
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WO/1997/048665A1 |
The invention discloses an acylation method for an aromatic compound. The acylation method that consists in reacting the said aromatic compound with an acylation agent, in the presence of a zeolite catalyst, is characterised in that it c...
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WO/1997/045398A1 |
The invention relates to a novel process for producing hydroxyarenes of general formula (I) in which n is a number 1, 2, 3, or 4, R is cyano, carboxy, formyl, nitro, halogen or possibly substituted alkyl, alkoxy, alkylthio, alkyl sulphin...
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WO/1997/043302A1 |
The invention relates to a method of performing a chemical reaction between a reagent and a substrate, involving an acyl transfer mechanism, in the presence of an imidazole-based catalyst capable of forming a transition complex with the ...
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WO/1997/035661A1 |
The invention relates to transition metal catalysts based on inorganic-organic polymers of general formula M(O3ZW)x(O3Z-X-ZO3)y(((O3P-)wY-)n-PR3-n)z, wherein M is a tetravalent metal, Z is a pentavalent atom, the condition x+2y+n.w.z = 2...
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WO/1997/034694A1 |
A non-chrome, copper-containing catalyst, Cu-Al-O and method of preparing the same are provided wherein the Cu-Al-O catalyst is prepared by the co-precipitation of copper nitrate (Cu(NO3)2) and sodium aluminate (Na2Al204) solutions using...
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WO/1997/029991A1 |
The invention relates to a process for the synthesis of beta zeolite with Si and Ti as unique lattice components. The preparation process involves the crystallization of a cogel of TiO2-SiO2 impregnated with a solution which contains an ...
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WO/1997/029062A1 |
A process for catalytic partial oxidation of a hydrocarbon is pro vided. The process includes: providing a feed gas mixture comprising an oxygen-containing gas and a hydrocarbon gas comprising one or more normal (C2-C4)alkanes; providing...
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WO/1997/028105A1 |
Processes for reducing carbonyl compounds into hydroxyl compounds easily under milder conditions, particularly a process for reducing an 'alpha'-aminohaloketone derivative stereoselectively. The above process comprises treating a carbony...
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WO/1997/023489A1 |
The present invention provides a new tetradentate bis-amido bis-alkoxo, 1,2-(bis-2,20diphenyl-2-hydroxyethanamido)benzene (H4PHAB) and various derivatives thereof. This ligand is able to stabilize high valent metal oxo complexes by provi...
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WO/1997/021648A1 |
A process is disclosed for the catalytic addition of nucleophilic agents to alkines or allenes to form alkenes that are substituted by the nucleophile and where required undergo further reaction and/or isomerisation with the nucleophile....
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WO/1997/019038A1 |
A perfluoroalkylation method and a reagent therefor are disclosed. The method comprises contacting a material of formula RfH and a base (or a species capable of generating a base) with a substrate bearing at least one electrophilic funct...
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WO/1997/018035A1 |
Selective oxidation process for organic substrates by contacting said substrates with an oxidant selected amongst hydroperoxides and/or hydrogen peroxide in the presence of a catalyst containing a metal complex of a least one multicoordi...
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WO/1997/017324A1 |
An aromatic thioether acylation method is disclosed. In a preferred embodiment, the method comprises condensing acetic anhydride or acetyl chloride with thioanisole. According to said aromatic thioether acylation method, said thioether i...
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WO/1997/013763A1 |
A chiral ligand having structure (I) wherein AR is any aromatic and/or ring structure, and R is selected from the group consisting of aryl, oxygenated aryl, alkyl, oxygenated alkyl, AR, oxygenated AR and combinations thereof.
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WO/1997/011081A1 |
This invention concerns modified fluorosulfonic acid compounds possessing a sulfonic acid fluoride, chloride or ester group or a sulfonic acid or a salt of a sulfonic acid group at one end and respectively a hydrolyzable or hydrolyzed si...
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WO/1997/003033A1 |
A process for preparing an aldehyde or ketone comprising reacting a primary or secondary alcohol with oxygen in the presence of a base, a catalytic amount of a copper salt and a suitable lignad under anhydrous conditions.
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WO/1997/002091A1 |
The invention relates to a supported catalyst, in which a metal of Group VIII of the periodic system is immobilized on a carbon support, wherein the catalyst comprises halogen atoms, the Group VIII metal and an activated carbon support w...
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WO/1996/037452A1 |
The object of the invention is a carbocyclic aromatic ether hydroxyalkylation method, and preferably a method for preparing 3-methoxy-4-hydroxybenzyl alcohol by means of guaiacol hydroxymethylation. Another object of the invention is the...
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WO/1996/036588A1 |
The present invention provides a process for the preparation of substituted aromatic amino compounds which are substituted by at least one -CN multiple bond or a carbonyl group on the aromatic radical or in side chain, by catalytic hydro...
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WO/1996/030320A1 |
The present invention relates to a novel process for preparing cis-4-O-protected-substituted-2-cyclopentenol derivatives comprising, (a) dissolving a 4-O-protected-2-cyclopentenone in a suitable organic solvent; and (b) treating the solu...
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WO/1996/028250A1 |
A titanium catalyst for use in the reaction between unsaturated carbon-to-carbon bonds and a compound having an electrophilic functional group or an electrophilic agent, which catalyst comprises a titanium compound represented by the gen...
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WO/1996/027575A1 |
A process for the reduction of carbonyl compounds comprises mixing the carbonyl compound and an alcoholic reagent, and bringing the mixture to a temperature above 200 �C. The temperature may be higher than the critical temperature of t...
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WO/1996/025390A1 |
A method of producing compounds of formula (I), wherein one of R1 and R2 is selected from -OH, -SH, and -NHR7; and the other of R1 and R2 is selected from H, -OH, -SH, -NHR7 and R8; R3 and R4 are each independently selected from R8; n an...
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WO/1996/023754A1 |
This invention relates to a method for preparing difluoromethyl ethers, thiols and amines without using chlorofluorocarbon gases. The intermediates prepared by this method can be used to make certain compounds which act as PDE IV inhibit...
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WO/1996/022832A1 |
A composition for use as a reduction catalyst, comprising a support consisting of at least one oxide selected from oxides that are inert or inertable with respect to the reaction mixture, and a phase at least partially covering said supp...
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WO/1996/022271A1 |
The present invention is a process for the scission and oxidation of ozonide materials. The process comprises introducing an oxygen-containing gas stream into an agitated liquid body in the form of fine bubbles.
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WO/1996/020234A1 |
In a process for opening the ring of epoxide compounds with nucleophiles, the reaction is carried out in the presence of fluorinated alkane-sulphonic acids, in particular trifluoromethane-sulphonic acid, that act as catalysts.
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WO/1996/014287A1 |
A method for preparing carboxylic acids by carbonylating a reagent, particularly an alcohol, in the presence of a rhodium catalyst. According to the method, the liquid phase reaction is carried out in a first zone in the presence of a rh...
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WO/1996/014150A1 |
The invention relates to a device for bringing solids in the form of pourable pieces into contact with liquids, or solids into contact with liquids and gases, in a reactor by putting the reactands together. The reactor has a housing cont...
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WO/1996/014310A1 |
The invention pertains to a method for preparing 8'alpha',12-oxido-13,14,15,16-tetranorlabdanum by cyclizing a mixture of compounds (I) to (III), wherein the cyclization is carried out in the presence of 10 to 100 wt.% acid, relative to ...
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WO/1996/009350A1 |
A process for the production of low molecular weight phenolic compounds from lignins through the pyrolysis of the lignins in the presence of a strong base. In a preferred embodiment, potassium hydroxide is present in an amount of from ab...
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WO/1996/005184A1 |
The invention pertains to novel herbicidally effective saccharin carboxylic acids or carboxylic acid esters of formula (Ia), in which the substituents are as follows: L, M are hydrogen, C1-C4 alkyl, C1-C4 alkoxy C1-C4 alkylthio, chlorine...
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WO/1996/005206A1 |
The present invention relates to an improved process for the in situ preparation of diisopinocampheylchloroborane which comprises reacting sodium borohydride and boron trichloride with 'alpha'-pinene. The diisopinocampheylchloroborane th...
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WO/1996/003363A1 |
Olefines are hydroformylated in the presence of rhodium-diphosphine complex compounds as catalysts. The diphosphines have a (Casey) angle of nip of 100 to 160� and a (Tolman) approach angle of 120 to 240 �C and the isomer energy diff...
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WO/1996/001304A1 |
A typical traditional reactor for hydrogenation consists of a tank filled with a liquid and a gas and a small particle catalyst. The reaction is carried out at high pressures and high temperatures. Lack of gas on the catalyst surface lim...
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WO/1995/031450A1 |
A process for synthesizing enantiomerically pure chiral secondary alcohol compounds linked to a heterocyclic core moiety, using a natural chiral molecule starting material. The inventive process is particularly useful for bulk manufactur...
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WO/1995/026928A1 |
Vanadium-containing Beta zeolite, and its use as catalyst in organic reactions.
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WO/1995/018781A1 |
Method for synthesizing oligomers containing hydroxy acids, and optionally containing other types of monomers or oligomers such as amino acids, carbohydrates, nucleotides and peptides, are provided which are rapid, simple, and readily au...
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WO/1995/018082A1 |
An ozonide reducing agent to be used in the ozonolysis of organic compounds, which has a wide application area and is industrially safe, inexpensive, and easy to aftertreat. The agent is a compound bearing a sulfur atom and, bonded there...
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WO/1995/017963A1 |
Process for producing an iridium solution, characterized in that a carbonylated iridium compound is contacted, in liquid phase, with hydriodic acid or its precursor in the presence of a solvent, at a global pressure of 1 to 5 bars and at...
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WO/1995/015321A1 |
The invention relates to a process for producing 8'alpha',12-oxido-13,14,15,16-tetranorlabdane through the cyclizing dehydration of 8'alpha',12-dihydroxy-13,14,15,16-tetranorlabdane in the presence of aluminophyllosilicates.
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WO/1995/011230A1 |
A process for the preparation of an oxirane, aziridine or cyclopropane of formula (I) wherein, X is oxygen, NR4 or CHR5; R1 is hydrogen, alkyl, aryl, heteroaromatic, heterocyclic or cycloalkyl; R2 is hydrogen, alkyl, aryl, heteroaromatic...
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WO/1995/009139A1 |
A process for the oxidation of alkylaromatic compounds is provided. The process comprises oxidising a substrate alkylaromatic compound with a peroxygen compound in the presence of a source of cerium (III) or (IV), a source of bromide and...
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WO/1995/008391A1 |
Catalysts of general formula (I): [AaBbOx]p [CcDdFeeCofEiFjOy]q, in which the variables have the following meanings: A = bismuth, tellurium, antimony, tin and/or copper; B = molybdenum and/or tungsten; C = an alkaline metal, thallium and...
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WO/1995/005354A1 |
Process for the hydroformylation of ethylenically unsaturated compounds, by reaction with carbon monoxide and hydrogen in the presence of a catalyst based on a metal of the platinum group, a source of anions other than halide anions and ...
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WO/1995/003249A1 |
In the manufacture of a substituted Beta zeolite, a high ethene pressure, is used advantageously accompanied by synthesis gel ageing and low aluminium content.
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WO/1995/002567A1 |
A catalytic asymmetric reduction process, which, by hydrogenating trisubstituted olefins, yields a corresponding organic compound having a high level of enantiomeric purity is disclosed. The process is also effective for the catalytic as...
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