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WO/1994/029018A1 |
An exothermic chemical reaction, for example, hydroformylation, is carried out in a series of loop reactors (10, 20, 30). Fresh reactant feed is supplied not only to the first reactor (10) in the series but also to the second reactor (20...
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WO/1994/020448A1 |
In the method proposed for the production of monocarboxylic acids from carbohydrates, carbohydrate derivatives or primary alcohols, the carbohydrates, carbohydrate derivatives or primary alcohols are oxidized continuously in aqueous solu...
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WO/1994/020207A1 |
An exothermic process for forming a product which may be in a liquid phase is disclosed wherein a first reactant (3), preferably a liquid reactant, is directly fed into a reaction zone (10) containing mixing elements (12, 58) and which c...
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WO/1994/006736A1 |
A sensitized photooxygenation process of unsaturated compounds uses fullerenes as sensitizers.
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WO/1994/002245A1 |
New titanium zeolite Beta catalysts which have been found to be useful as catalysts for the oxidation of organic compounds using organic hydroperoxides as oxidation catalysts. They are particularly useful as ring opening oxidation cataly...
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WO/1994/000407A1 |
Fluoro-substituted aromatic carboxylic acids, and particular 2- and 4-fluorobenzoic acid can be made from the corresponding fluoro-methyl compound such as fluorotoluene in a single stage by reaction at elevated temperature, preferably of...
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WO/1993/024263A1 |
Novel zerovalent metal species and organometallic reagents are disclosed. The zerovalent metal species are directly produced by reaction of a reducing agent on a metal cyanide salt. Preferably, the zerovalent metal species are directly p...
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WO/1993/023408A1 |
The borane reduction of prochiral ketones to optically pure alcohols is effectively achieved by the utilization of catalytic amounts of the new and valuable oxazaborolidine catalysts of formula (I).
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WO/1993/022266A1 |
A process for alkoxylation of organic compounds containing at least one active hydrogen which process comprises reacting said organic compound with an alkylene oxide in the presence of a catalytically effective amount of a catalyst compr...
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WO/1993/010897A1 |
Proposed is a method of producing alkaline-earth phosphates containing hydrophobic groups by reacting alkaline-earth phosphates with fatty acids. The products are suitable for use as alkoxylation catalysts in the manufacture of narrow-ra...
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WO/1993/003839A1 |
This invention relates to asymmetric syntheses in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to produce an optically active product.
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WO/1993/002991A1 |
A process for ozonizing an unsaturated fatty acid or a lower alkyl ester thereof, which comprises flowing a thin-film stream of the acid or ester and a gas comprising ozone and oxygen or a mixture of oxygen with air or an inert gas in th...
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WO/1992/019623A1 |
A novel zerovalent copper species and an organocopper reagent are disclosed. The zerovalent copper species is directly produced by reaction of a reducing agent with a combination of copper cyanide or halide and an alkali metal halide sal...
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WO/1992/017430A1 |
Alkoxylates of active hydrogen compounds having a peaked molecular weight distribution are prepared by reacting the active hydrogen compound with an alkylene oxide of from 2 to 4 carbon atoms using iron oxides as alkoxylation catalysts.
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WO/1992/017405A1 |
Hydrophobised double-layer hydroxide compounds may be produced if double-layer hydroxide compounds of general formula (I): [M?(II)��1-x?M?(III)��x?(OH)�2?] A�x? * n H�2?O, in which M?(II)� is a divalent metal cation, M?(I...
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WO/1992/009545A2 |
A process is provided whereby organic carbonyl substrates, including esters, ketones and amides, are reduced in a reaction with a silane reducing reagent and a catalyst. According to the invention esters and ketones can be reduced to alc...
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WO/1991/019559A1 |
In a process for carrying out an equilibrium reaction, one or more products are removed by vapour permeation. To obtain high reaction rates at high reaction temperatures, the reaction is carried out in a bubble reactor (1) and the lower ...
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WO/1991/015441A1 |
The use of hydrophobised hydrotalcites of general formula Mg�x?Al(OH)�y?(CO�3?)�m?(A)�n? . z H�2?O, in which A is the dianion of an aliphatic dicarboxylic acid with 4 to 44 carbon atoms or two anions of aliphatic monocarboxyl...
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WO/1991/013051A1 |
The use of strontium and/or barium acetyl acetonates as catalysts for the ethoxylation or propoxylation of compounds with active H atoms results in a narrow distribution of the homologs of the ethoxylation or propoxylation products.
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WO/1991/011419A1 |
A process for oxidizing an organic compound selected from an aliphatic, aromatic, aliphatic/aromatic, cycloaliphatic and heterocyclic alcohol, thiol, sulfide, aldehyde, amine, amide, ketone, acid, ether, ester, and organic compounds cont...
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WO/1991/009822A1 |
Continuous process for the telomerization of conjugated dienes comprising reacting a conjugated diene with a compound containing an active hydrogen atom in the liquid phase in the presence of a Group VIII transition metal catalyst and a ...
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WO/1991/007385A1 |
Compounds of formula (I), in which Ar is aryl and R?1¿ and R?2¿ are alkyl, are obtained by a process in which a compound of formula (II), where Z is a disubstituted amino group, is reacted (a) with an alcohol, R?2??OH, preferably under...
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WO/1991/007371A1 |
The present invention relates to a method for the preparation of alpha,beta-unsaturated ketones represented by general formula (II) (where R is a heterocyclic group with nitrogen atom in the ring or a phenyl group with electron donative ...
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WO/1990/015040A1 |
A stable 1,2-dioxetane of the formula (I), where R1, R2 and R3 are passive organic groups that allow the dioxetane to decompose and produce light when Z and Y are removed, with the proviso that R1 and R2 may be joined to form a cyclic mo...
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WO/1990/014073A1 |
Pharmaceutical preparation consisting of one or more active ingredients and an excipient which solidifies at temperatures between 20 and 80°C and is water soluble, characterized in that it is an isotropic solution in which a) the active...
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WO/1990/006911A1 |
Process for the preparation of acetoacetates and other beta-ketoesters is provided, involving reaction of nitrogen, oxygen or sulfur nucleophiles with a tertiaryalkyl acetoacetate or tertiaryalkyl beta-ketoester.
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WO/1990/006810A1 |
The hydroformylation of olefins with rhodium complex catalysts is described. The catalysts employed comprise a rhodium complex with at least one bidentate ligand having a specified structure (I). Hydroformylation reactions at relatively ...
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WO/1989/011478A1 |
A ruthenium catalyzed method to synthesize cyclic sulfate compounds from the corresponding cyclic sulfites, and the cyclic sulfate reaction products obtained by this method. These cyclic sulfates further react with selected nucleophiles ...
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WO/1989/008659A1 |
Chemical reactions are readily carried out using supercritical carbon dioxide as the reaction medium. Supercritical carbon dioxide is of special value as a reaction medium in reactions for synthesizing polypeptides for sequencing polypep...
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WO/1989/006642A2 |
Disclosed is a process for the purification of carbon monoxide and/or hydrogen-containing gas streams employed for chemical conversion reactions by contacting such gas feed streams with the oxygenated organic reaction products obtained i...
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WO/1989/006225A1 |
An osmium-catalyzed method of addition to an olefin. In the method of asymmetric dihydroxylation of the present invention, an olefin, a chiral ligand, an organic solvent, water, an amine oxide, an osmium-containing compound and, optional...
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WO/1989/001467A1 |
The hydroformylation of olefins with rhodium complex catalysts is described. The catalysts employed comprise a rhodium complex with at least one phosphine having a specified structure, e.g., tris(benzyl)phosphine. Preferred phosphines ha...
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WO/1988/005767A1 |
A continuous process for hydrogenating an unsaturated organic compound to a corresponding hydrogenation product which process comprises: (a) providing a hydrogenation plant comprising first and second hydrogenation zones connected in ser...
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WO/1988/005771A1 |
Ketones or aldehydes containing one or more carbon-carbon double bonds and a carbonyl group conjugated with at least one double bond are hydrolyzed by the action of heat and pressure in the presence of water by a batch or continuous proc...
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WO/1988/002357A2 |
Compounds having formula (I): R1-(Ao)k-(Z1-A1)m-Zo-(E)n-(Q)o-(Z2-A2)p-R2, can be easily produced in high yields from organic zinc compounds having formula (II): R1-(Ao)k-(Z1-A1)m-Zo-ZnY and compounds having formula (III): X-(E)n-(Q)o-(Z2...
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WO/1988/001995A1 |
A process for reducing aldehydes or ketones using a stable and highly active catalyst not soluble in a solvent, easily removable from the reaction system after completion of the reaction, and reusable. This process comprises reacting an ...
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WO/1987/007889A2 |
The process is carried out in the presence of at least one transition metal complex MZq (M = metal of group VIII of the Periodic Classification; Z = ligand selected among the atoms and the molecules which may complex the metal M; and q =...
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WO/1987/007889A1 |
The process is carried out in the presence of at least one transition metal complex MZq (M = metal of group VIII of the Periodic Classification; Z = ligand selected among the atoms and the molecules which may complex the metal M; and q =...
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WO/1987/000520A1 |
Salts of organophilic acidic compounds or their derivatives, particularly ionomeric polymers containing carboxylic, sulfonic or phosphorus acid or ester groups, are prepared by reaction in the melt or in solution in a relatively non-pola...
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WO/1986/004056A1 |
Propanol derivatives of formula (I), wherein X is a leaving group; R1 is H or a protecting group; and R2 is H, and R3 is a group -CH2Y wherein Y is a leaving group; or R2 and R3 together form =CH2. The propanol derivatives of the formula...
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WO/1986/000886A1 |
A general method for producing methylol compounds by the reaction of an organometallic compound with formaldehyde in which the formaldehyde is generated in situ from and by the use of a high molecular weight linear formaldehyde homopolymer.
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WO/1980/000714A1 |
Production of ketone and the like by catalytic electrode oxidation of a secondary alcohol in the presence of iodine and/or an iodine compound.
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JP7382152B2 |
A heat exchanger system can be used for removal or introduction of heat from or into a chemical reactor in which a chemical reaction is proceeding. The system further provides an apparatus for controlling the temperature of a reactor and...
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JP2023133352A |
To make it efficient to grasp a temperature distribution and make it easy to maintain an appropriate temperature state during operation or preparation time of a multitubular reactor containing a plurality of reactor tubes by which unsatu...
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JP7316482B1 |
Operation of a shell-and-tube reactor comprising a plurality of reaction tubes for producing at least one of an unsaturated aldehyde and an unsaturated carboxylic acid by an oxidation reaction using a catalyst, or a conjugated diene by a...
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JP7289419B1 |
A method for supporting air treatment of a shell-and-tube reactor comprising a plurality of reactor tubes producing unsaturated aldehydes and/or unsaturated carboxylic acids by catalytic oxidation or conjugated dienes by oxidative dehydr...
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JP7264363B1 |
Kind Code: A1 A method for producing an α-fluoroether using an unactivated chloride as a raw material is provided. A method for producing a compound represented by formula (3), comprising a step A of reacting a compound represented by f...
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JP7023019B2 |
Disclosed is a cross-coupling reaction method which forms a chemical bond selected from C-N, C-B, C-C, C-O and C-S bonds, the method comprising:preparing an aromatic compound (1) having a leaving group;preparing a compound (2) capable of...
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JP6892098B2 |
To provide an asymmetric catalyst for a convenient and high-enantioselective synthesis of optically active α-amino ketone using an oxidative asymmetric ring-opening reaction for aziridine, and provide an asymmetric catalytic production ...
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JP6888550B2 |
Provided is a method for producing an organic compound, wherein the organic compound is an industrially useful compound, and a deodorization step, for removing from a reaction solution odorants that are generated in or remaining after a ...
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