Matches 1 - 50 out of 99 1 2 >
Match Document Document Title
7531697 Process for the preparation of aromatic aldehydes  
(Hetero)aromatic are prepared from halogen-substituted (hetero)aromatic compounds in the presence of a base and a palladium catalyst having a nonpyrophoric monodentate phosphane ligand. The...
7232931 Method for the rhodium-catalyzed hydroformylation of olefins with reduction of rhodium losses  
Process for preparing aldehydes and alcohols by rhodium-catalyzed hydroformylation of olefins having 6–20 carbon atoms with subsequent separation by distillation of the output from the...
7196230 Phosoxophite ligands and use thereof in carbonylation processes  
A novel organophosphorus composition and synthesis thereof, the composition being characterized by one phosphite moiety, one phosoxophite moiety, and a plurality of sterically bulky substituents....
7164045 Electroluminescent iridium compounds with phosphinoalkoxides and phenylpyridines or phenylpyrimidines and devices made with such compounds  
The present invention is generally directed to electroluminescent Ir(III) compounds with phosphinoalkoxides and phenylpyridines or phenylpyrimidines, and devices that are made with the Ir(III)...
7161043 Process for the carbonylation of ethylenically unsaturated compounds and bidentate diphosphine composition used in this process  
Process for the carbonylation of optionally substituted ethylenically unsaturated compounds by reaction with carbon monoxide and a coreactant in the presence of a catalyst system. The catalyst...
7087795 Method for the production of aldehydes  
The invention relates to a hydroformylation method, whereby the homogeneous liquid reactor discharge is first supplied to a gas/liquid separator and then run through an extraction column with a...
7084089 Process for the carbonylation of ethylenically unsaturated compounds, bidentate diphosphine composition used in this process and a process for preparation of this bidentate diphosphine composition  
Process for the carbonylation of optionally substituted ethylenically unsaturated compounds by reaction with carbon monoxide and a coreactant in the presence of a catalyst system. The catalyst...
7081554 Oxo process  
The Oxo Process that recycles its cobalt primarily as cobalt salt is improved by concentration of the cobalt salt solution from the demetalling section and the addition of a separation step for...
7081553 Cobalt flash process  
The Cobalt Flash Process is modified by replacing formic acid with acetic acid as process acid. Efficiency using acetic acid as process acid is achieved by two improvements which may be added...
7015360 Asymmetric catalysts prepared from optically active bisphosphites bridged by achiral diols  
This invention relates to asymmetric hydroformylation (hf) processes in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to...
7002044 Catalysis by water-soluble organometallic complexes in water-in-densified fluid microemulsions  
A microemulsion containing water, a densified fluid, a surfactant, and an organometallic catalyst is used to catalyze chemical reactions. The organometallic catalyst preferably has substantial...
6995292 Process for reducing fluoride impurities resulting from use of fluorophosphite catalysts  
Described is a process for reducing the fluoride content of products prepared in a process utilizing a fluorophosphite-containing transition metal complex catalyst, involving contacting the...
6995293 Method for the production of aldehydes  
The present invention relates to a hydroformylation method by conversion of olefins or olefinically unsaturated compounds in the presence of at least one rhodium compound and in the presence of...
6960695 Hydroformylation process  
A hydroformylation process comprising reacting a compound having at least one olefinic carbon-to-carbon bond with hydrogen and carbon monoxide in the presence of a cobalt catalyst, the...
6852661 Catalyst comprising a metal complex of the VIII subgroup based on a phosphine amidite ligand and its utilization for hydroformylation and hydrocyanation  
A catalyst comprising at least one complex of a metal of transition group VIII comprising at least one monodentate, bidentate or multidentate phosphinamidite ligand in which the phosphorus atom and...
6777579 Hydroformylation process  
A hydroformylation process is provided that involves reacting a compound having at least one olefinic carbon-to-carbon bond with hydrogen and carbon monoxide in the presence of a cobalt catalyst...
6720457 Process for the hydroformylation of higher olefins using cobalt compounds as catalyst  
Olefins having from 5 to 24, in particular from 5 to 12, carbon atoms are hydroformylated by reacting an olefin or a mixture of olefins in the presence of an unmodified cobalt catalyst in a...
6700021 Preparation of aldehydes  
The present invention relates to a process for preparing aldehydes by reaction of olefinically unsaturated compounds with carbon monoxide and hydrogen, wherein, during the process, rhodium is added...
6680414 Process for the hydrogenation of hydroformylation mixtures  
The present invention provides a process, which includes: in a homogeneous liquid phase including water, and over a fixed-bed catalyst, continuously hydrogenating at least one hydroformylation...
6660889 Method of manufacturing oxygenated fuel  
A Fischer-Tropsch reaction is conducted using a synthesis gas (mixture of carbon monoxide and hydrogen) as a raw material to synthesize hydrocarbons containing a large amount of olefin. These...
6579997 Metallacrown ether catalysts for hydroformylation  
A metallacrown ether ligand chelates a transition metal atom to form a catalyst well suited to perform hydroformylation in the presence of carbon monoxide, hydrogen and an unsaturated substrate...
6492525 Organometallic complexes comprising cationic heterocyclic carbenes  
The invention concerns novel organometallic complexes comprising cationic heterocyclic carbenes. It also concerns a method for preparing said complexes from dicationic heterocyclic precursor...
6403836 Process for the hydroformylation of olefins by reducing the formic acid concentration  
The present invention is a process for preparing C 4-25 aldehydes by hydroformylating the corresponding C 3-24 olefins in the presence of a cobalt hydroformylation catalyst, and catalytically...
6388141 Hydroformylation with unmodified rhodium catalysts in supercritical carbon dioxide  
The present invention relates to processes for the preparation of oxo products by the hydroformylation of substrates having C═C double bonds using unmodified rhodium catalysts in a reaction...
6369257 Hydroformylation of olefins using supported bis(phosphorus) ligands  
Supported bis(phosphorus) ligands are disclosed for use in hydroformylation reactions, including the hydroformylation of olefins. Catalysts are formed when the ligands are complexed with a...
6362305 Method for producing formaldehyde from methanol  
In a process for preparing formaldehyde from methanol by dehydrogenation in a reactor in the presence of a catalyst at a temperature in the range from 300 to 1000° C., a circulating gas stream...
5910600 Bisphosphite compound, process for its production and hydroformylation process employing the bisphosphite compound  
A bisphosphite compound of the following formula (A): ##STR1## wherein --Ar--Ar-- is a bisarylene group represented by any one of the formulae (A-I) to (A-III) defined in the specification, and...
5817850 Ferrocene bis(phosphonite) ligands and complexes for transition-metal-catalyzed reactions  
The synthesis of new sterically hindered ferrocene bis(phosphonites) of formula I ##STR1## the synthesis of the corresponding transition-metal complexes and the use of these complexes in...
5498801 Process for the catalytic hydroformylation of alkenes  
A process is effected using water soluble metal complex catalysts in the presence of a promoter in the organic (water immiscible) phase. The process results in the enhancement of the rate of...
5488175 Hydroformylation process  
A process for the hydroformylation of unsaturated compounds containing a group CCC--OH, in the presence of a catalyst system containing rhodium and a ligand of the formula R 1 R 2 P--R--NR...
5481044 Process for the preparation of α-alkyl substituted aldehydes  
α-alkyl aldehydes having 8 to 17 carbon atoms are obtained from terminal olefins containing one less carbon atom. The olefins are first isomerized in the presence of iron carbonyl and then,...
5463137 Process for the production of oxo products  
A propylene stream which contains propane as an impurity is contacted with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst thereby producing a product stream containing...
5463082 Fluorous multiphase systems  
Stoichiometric and catalytic chemical transformations may be carried out in solution using novel fluorous multiphase systems (FMS). The term "fluorous" is defined as a carbon-fluorine bond rich...
5436374 Process for producing 4-formyl-4'-methylbiphenyl from biphenyl  
A process for producing a 4-formyl-4'-methylbiphenyl from a biphenyl which comprises conducting the carbonylation of the biphenyl with carbon monoxide in the presence of a HF-BF 3 catalyst in a...
5430194 Process for improving enantiomeric purity of aldehydes  
The present invention relates to a process for producing an optically active aldehyde (first aldehyde) containing a reduced amount of the corresponding enantiomeric aldehyde (second aldehyde) which...
5382701 Use as catalyst in the hydroformylation of olefinic feedstock to higher aldehydes and higher alcohols  
A method for producing a potassium paradiphenyl phosphino sulfonate ligand which comprises reacting potassium diphenyl phosphide with a lithium salt of para-chloro benzenesulfonic acid in the...
5364950 Process for stabilizing phosphite ligands in hydroformylation reaction mixtures  
This invention provides a process for stabilizing a phosphite ligand against degradation in a homogeneous reaction mixture containing a Group VIII transition metal catalyst and the phosphite...
5260477 Method for preparing alpha-(4-isobutylphenyl)propionic acid or its precursor  
A method for preparing α-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises a step (I) of dehydrogenating p-isobutylethylbenzene in a gaseous phase in the presence...
5223648 Process for producing aldehydes  
The hydroformylation of olefins and olefinically unsaturated compounds in the presence of a water-soluble rhodium complex compound Which contains, as a ligand, at least one sulfonated diphosphine,...
5191121 Aroyl ketone derivative, UV ray absorber comprising the same, and cosmetic composition containing the same  
A novel aroyl ketone derivative represented by formula (I) is disclosed. Ar(COCH 2 COR 1 ) n (I) wherein R 1 represents a saturated or unsaturated hydrocarbon group...
5166419 Method for preparing α-(4-isobutylphenyl) propionic acid or its precursor  
A method for preparing α-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises the following steps (I), (II) and (III): step (I): subjecting isobutylbenzene and a...
5118824 Platinum hydrides with bridges bimetallic structure, method for their preparation and their application to the catalysis of chemical reactions  
The invention relates to platinum hydrides, a process for their preparation and their use as components of catalytic systems. The platinum hydrides have a bridged bimetallic structure represented...
5099047 Method for recovering a Group VIII metal solid complex and hydroformylation method  
A method for recovering a Group VIII metal solid complex from an organic compound-containing solution containing a Group VIII metal complex, wherein the Group VIII metal complex is precipitated in...
5097061 Method for preparing α-(4-isobutylphenyl)propionic acid or its precursor  
A method for preparing α-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises a step A of forming p-isobutylstyrene from p-isobutylethylbenzene and a step B of...
5072037 Process for the preparation of 2-(4-chlorophenyl)-3-methylbutyric acid  
A process for the preparation of 2-(4-chlorophenyl)-3-methylbutyric acid from 4-chlorobenzaldehyde by conversion of the benzaldehyde to 3-(4-chlorophenyl)-2-methylpropenal,...
4999450 Process for preparing alpha-(3-benzylphenyl) propionic acid derivative  
A process for preparing α-(3-benzylphenyl)-propionic acid or its derivative, a precursor of ketoprofen (trade name), which comprises dehydrogenating a by-product oil fraction formed in the...
4982007 Process for selectively hydroformulating diolefin  
A process for selectively hydroformylating a diolefin, which comprises reacting a (1-arylethyl)vinylbenzene with carbon monoxide and hydrogen under the conditions of 40° to 200° C. in reaction...
4978801 Preparation of aromatic aldehydes  
Aromatic aldehydes are more efficiently produced by reacting carbon monoxide/hydrogen admixture with an aromatic halide in the presence of a noble metal-based catalyst, a tertiary nitrogenous based...
4929767 Treatment of rhodium catalysts  
A process for treating an organic solution of a partially deactivated solubilized rhodium-tertiary organophosphine complex hydroformylation catalyst with an organic reagent in order to improve the...
4879721 Phase locked laser array  
A laser array having effectively separate oscillation regions 70,72,74 that are locked in phase is formed with a ceramic body 60,64 having a single, unpartitioned and relatively wide cavity area...
Matches 1 - 50 out of 99 1 2 >