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7612241 |
Hydroformylation process
A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of a solvent and a...
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7586010 |
Phosphonite-containing catalysts for hydroformylation processes
Disclosed are catalyst solutions for preparing aldehydes with variable normal- to iso-aldehyde ratios comprising one or more phosphonite ligands, rhodium, and a hydroformylation solvent. Also...
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7582802 |
Propylene hydroformylation
Propylene streams obtained by the conversion of oxygenates to olefins are used as feeds for hydroformylation. The streams may contain measurable amounts of dimethyl ether without adversely...
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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...
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7495134 |
Carbonylation method by adding secondary sterically hindered amines
The invention relates to a process for reaction of a carbonylatable compound using a metal complex catalyst comprising a metal of transition group VIII and an organophosphorus ligand and in the...
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7495133 |
Method for hydroformylating olefins in the presence of organophosphoric compounds
(EN) The invention relates to the use of novel organophosphoric compounds and metal complexes thereof in catalytic reactions, and to the hydroformylation of olefins in the presence of these compounds.
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7491850 |
Bisphosphite and process for producing aldehyde compound with the bisphosphite
Bisphosphite(s) represented by the following general formula (I):
wherein Ar 1 and Ar 2 are each independently a substituted or unsubstituted arylene group; R 1 , R 2 , R 7 and R 8 are each...
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7485759 |
Minimization of ligand degradation products, or reversion of same to useful phosphine ligands
A process for the minimization of phosphonium ion ligand degradation products formed during reaction of a polyunsaturated olefin or an unconjugated functionalized olefin in the presence of a...
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7449607 |
Process of preparing glycolaldehyde
The invention provides a process of preparing glycolaldehyde by reacting formaldehyde with hydrogen and carbon monoxide in the presence of a catalyst composition which is based on, a) a source of...
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7446231 |
Stabilization of a hydroformylation process
An improved hydroformylation process involving reacting one or more reactants, such as an olefin, with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst, to produce a...
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7442842 |
Method for asymmetric synthesis
The present invention relates to a process for asymmetric synthesis in the presence of a chiral catalyst comprising at least one complex of a metal of transition group VIII with ligands capable of...
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7432403 |
Cyclic palladium compounds having coordinated thereto bis (diphenylphosphine) ferrocene ligands which inhibit the activity of proteins and enzymes and treatment of diseases and disorders associated therewith
The invention relates to cyclopalladated compounds containing bis-diphenyiphosphine-ferrocene ligands and their analogues which are active inhibitors of proteins and enzymes, for example, those of...
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7425656 |
Phosphorus-containing catalyst composition and process for hydroformylation reaction using the same
Provided are a catalyst composition including a transition metal catalyst and a nitrogen-containing bidentate phosphorus compound and a process for hydroformylation reaction of olefins to prepare...
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7420092 |
Process for producing aldehyde
A process by which a hydroformylation reaction can be efficiently conducted without lowering the yield of an aldehyde in the reaction is provided. A process for producing an aldehyde which includes...
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7405329 |
Hydroformylation
The gas cycle in a high pressure hydroformylation reaction using a series of at least two reactors is controlled to optimise yield, conversion and selectivity and to control reaction temperature....
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7371705 |
Phospha-adamantane(s) catalytic system
A catalyst system capable of catalysing the carbonylation of an olefinally unsaturated compound is described. The 5 catalyst system is obtainable by combining: (a) a metal of Group VIB or Group...
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7365234 |
Tuning product selectivity in catalytic hydroformylation reactions with carbon dioxide expanded liquids
An improved hydroformylation process is provided, which comprises reacting an olefin with CO and H 2 in the presence of a hydroformylation catalyst in a liquid that has been volumetrically...
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7329783 |
Hydroformylation process
A hydroformylation process comprising reacting a feedstock composition comprising a compound having at least one olefinic carbon-to-carbon bond with hydrogen and carbon monoxide in the presence of...
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7301054 |
Process for the preparation of glycolaldehyde
Disclosed are catalyst solutions for the hydroformylation of formaldehyde comprising one or more fluorophosphite compounds, rhodium and a hydroformylation solvent comprising at least one...
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7294745 |
Process for preparing aldol derivatives from alkenes using catalyst
The present invention provides a novel eco-friendly multi-functional catalyst system useful to obtain C 2(n+1) aldol-derivative from C n -alkenes where n ranges from 2 to 10 in a single step under...
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7279606 |
Hydroformylation process
A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of a solvent and a...
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7262330 |
Process of producing aldehydes
A process of producing aldehydes in a continuous hydroformylation process of continuously reacting an olefinic unsaturated compound with carbon monoxide and hydrogen in the presence of a...
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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...
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7227045 |
Process for the preparation of linear olefins and use thereof to prepare linear alcohols
Process for the preparation of a mixture comprising C 5 + linear olefins, which process comprises the steps of
(a) reacting carbon monoxide and hydrogen in the presence of an effective...
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7223374 |
Hydroformylation process employing a cobalt-based catalyst in a non-aqueous liquid with improved catalyst recycling
A process for hydroformylating olefinically unsaturated compounds by means of a cobalt-based catalyst is carried out in a non-aqueous ionic liquid which is a liquid at a temperature below 90° C....
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7217848 |
Tridentate phosphines and method of forming aldehyde hydrogenation catalysts
This invention comprises a process for hydrogenation of aldehydes to alcohols using novel homogeneous catalysts. The catalysts are generated in situ under hydrogen and carbon monoxide gases in a...
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7208635 |
Method for the hydroformylation of olefins with 2 to 6 carbon atoms
The invention relates to a hydroformylation process in which at least one olefin having from 2 to 6 carbon atoms is reacted continuously with carbon monoxide and hydrogen in the presence of a...
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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....
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7193116 |
Method for producing aldehydes by means of hydroformylation of olefinically unsaturated compounds, said hydroformylation being catalyzed by unmodified metal complexes in the presence of cyclic carbonic acid esters
The present invention relates to a process for preparing aldehydes by hydroformylation catalyzed by metals of groups 8 to 10 of the Periodic Table of the Elements in the presence of cyclic carbonic...
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7189883 |
Diazaphospholane ligands for asymmetric catalysis
This invention relates to asymmetric hydroformylation processes in which a prochiral or chiral olefin is reacted with carbon monoxide and hydrogen in the presence of an optically active...
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7173138 |
Ligands for pnicogen chelate complexes with a metal of subgroup VIII and use of the complexes as catalysts for hydroformylation, carbonylation, hydrocyanation or hydrogenation
Pnicogen chelate compounds which have two pnicogen-containing groups joined to one another via a xanthene-like or triptycene-like molecular skeleton and in which at least one pyrrole group is...
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7145042 |
Method for producing dialdehydes and or ethylenically unsaturated monoaldehydes by hydroformylating ethylenically unsaturated compounds
The invention relates to a method for producing dialdehydes and/or ethylenically unsaturated monoaldehydes by reacting at least one compound with at least two ethylenically unsaturated double bonds...
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7141702 |
Process for the synthesis of α-substituted acroleins
The present invention provides an improved process for the synthesis of α-substituted acroleins from olefins by a tandem hydroformylation and Mannich reaction sequence in the presence of syngas...
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7102033 |
Continuous hydroformylation process for producing an aldehyde
A continuous hydroformylation process for producing an aldehyde comprising 1) reacting an olefinically unsaturated compound, carbon monoxide and hydrogen in the presence of a...
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7094907 |
Ligands for asymmetric reactions
The invention relates to a process for the manufacture of bidentate ligands of the formula IA and IIA, characterized in that N,N-(optionally substituted)dialkylamino phosphines bound to an aromatic...
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7087797 |
Continuous hydroformylation process
A continuous hydroformylation process for forming an aldehyde comprising 1) reacting an olefinically unsaturated compound containing from 2 to 30 carbon atoms with carbon monoxide and hydrogen in...
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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...
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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...
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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...
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7060860 |
Hydroformylation process employing a cobalt-based catalyst in a non-aqueous liquid with improved catalyst recycling
A process for hydroformylating olefinically unsaturated compounds by means of a cobalt-based catalyst is carried out in a non-aqueous ionic liquid which is a liquid at a temperature below 90° C....
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7049473 |
Hydroformylation
The present invention relates to a process for hydroformylating in the presence of a catalyst comprising at least one complex of a metal of transition group VIII with mono-phosphorus compounds...
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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...
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7012162 |
Phosphacyclohexanes and the use thereof in the hydroformylation of olefins
The invention relates to phosphacyclohexanes of general formulae I and II, wherein the following designations, among others, apply: R can represent hydrogen, C 1-100 -alkyl, C 7-20 -aralkyl, C 7-20...
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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...
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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...
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6982355 |
Integrated Fischer-Tropsch process for production of linear and branched alcohols and olefins
A process is disclosed for making high value olefins and alcohols from synthesis gas as well as a process for an improved yield of alpha-olefins from synthesis gas. The process for hydroformulation...
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6969777 |
Method for the hydroformylation of olefins comprising 2 to 8 carbon atoms
Olefins having from 2 to 8 carbon atoms are hydroformylated in a process in which (i) an olefin-containing feed in which a proportion of a saturated hydrocarbon having from 2 to 8 carbon atoms is...
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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...
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6956133 |
Process for hydroformylating an olefin
A process for hydroformylating olefins with a rhodium catalyst wherein the rhodium catalyst comprises rhodium and at least one diphosphine ligand of formula
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6946580 |
Hydroformylation process with recycle of active rhodium catalyst
The present invention relates to a continuous hydroformylation process for the production of an aldehyde by hydroformylation of an olefin which comprises: providing a hydroformylation zone...
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