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| Number | Title | Issue Date |
| 8049041 | Phosphite stabilizer for lubricating base stocks and thermoplastic polymers A substituted phosphite suitable for lubricating base stocks and thermoplastic polymers represented by the structure: wherein R1 is selected from the group consisting of C1-C22 alkyl and C | 11/01/2011 |
| 7834215 | Unsymmetrically substituted phospholane catalysts The present invention is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalyzed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for ... | 11/16/2010 |
| 7767862 | Ligand, catalyst and process for hydroformylation According to the present invention, there is provided an organophosphine ligand comprising a phosphabicyclohydrocarbyl group in which the phosphorus atom is further substituted with a hydrocarbyl or heterohydrocarbyl moiety containing at least one branch at the β-c... | 08/03/2010 |
| 7612240 | Halophospholanes and their preparation The present invention is directed to a process for preparing compounds of the general formula (I). Compounds of the general formula (I) are advantageous precursors for preparing phospholane catalysts, especially bisphospholane catalysts. The invention therefore like... | 11/03/2009 |
| 7414156 | Non-C-symmetric bisphosphine ligands as catalysts for asymmetric hydrogenation Non-C2-symmetric bisphospholane ligands and methods for their preparation are described. Use of metal/non-C2-symmetric bisphospholane complexes to catalyze asymmetric transformation reactions to provide high enantiomeric excesses of formed comp... | 08/19/2008 |
| 7414155 | Process for the hydroformylation of an ethylenically unsaturated compound Process for the hydroformylation of an optionally substituted ethylenically unsaturated compound by reaction thereof with carbon monoxide and hydrogen in the presence of a specific catalyst system which includes a source of Group VIII metal cations; a diphosphine li... | 08/19/2008 |
| 7411096 | Process for producing optically active phosphorus heterocyclic dimer The present invention provides a process for producing an optically active phosphorus heterocyclic dimer including reacting, in the presence of a base, primary phosphine represented by formula (1) R—PH2 (1) is reacted with a c... | 08/12/2008 |
| 7390931 | Preparation of P-chirogenic phospholanes and their use in asymmetric synthesis Materials and methods for preparing P-chirogenic monophospholanes and bisphospholanes are disclosed. The methods employ stereoselective cyclization to generate the phospholane rings followed by pyramidal inversion to access a variety of P-chirogenic phospholanes. Wh... | 06/24/2008 |
| 7342060 | Process for manufacture of pentaerythritol diphosphites A method is disclosed for the production of pentaerythritol diphosphites of high spiro isomer content. The pentaerythritol diphosphites are produced via sequential transesterification of pentaerythritol with a monophosphite followed by a substituted phenol or other ... | 03/11/2008 |
| 7294729 | Bis-chelating ligand and use thereof in carbonylation processes A novel bis-chelating composition characterized by formula I: wherein M is a Group VB element; R1 and R2 are each independently selected from hydrogen and monovalent hydrocarbyl radicals; or R1 and R2 are bonded together to form a diradical; or one of R1 or R2 is hy... | 11/13/2007 |
| 7250538 | Process for the hydroformylation of an ethylenically unsaturated compound Process for the hydroformylation of an optionally substituted ethylenically unsaturated compound by reaction thereof with carbon monoxide and hydrogen in the presence of a specific catalyst system which includes a source of Group VIII metal cations; a diphosphine li... | 07/31/2007 |
| 7230135 | Synthesis of P-chiral bisphospholane ligands and their transition metal complexes for use as asymmetric hydrogenation catalysts P-chiral bisphospholane ligands and methods for their preparation are described. Use of metal/P-chiral bisphospholane complexes to catalyze asymmetric transformation reactions to provide high enantiomeric excesses of formed compounds is also described. ... | 06/12/2007 |
| 7220870 | Hydrolytic kinetic resolution of cyclic substrates The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisome... | 05/22/2007 |
| 7202193 | Process for the carbonylation of an ethylenically unsaturated compound and catalyst therefore A process for the carbonylation of an ethylenically unsaturated compound with carbon monoxide and a co-reactant. The carbonylation reaction is carried out in the presence of a novel catalyst involving: a) a source of a group VIII metal; b)a... | 04/10/2007 |
| 7169953 | P-chiral phospholanes and phosphocyclic compounds and their use in asymmetric catalytic reactions Chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic al... | 01/30/2007 |
| 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 system includes (a) a source of Pt group metal cations,... | 01/09/2007 |
| 7135542 | Bidentate ligands for the carbonylation of unsaturated compounds Bidentate ligand of formula (I), R1R2M1-R-M2R3R4 wherein M1 and M2 each indenpendently represent P, As or Sb; R1, R2, R3 and R4 each i... | 11/14/2006 |
| 7126021 | Method for preparing β-phosphorus nitroxide radicals The present invention relates to a process for the preparation of β-phosphorated nitroxide radicals which consist in preparing, in a first step, an aminophosphonate by reaction of a carbonyl compound, of a primary amine and of a phosphorous compound in the presence... | 10/24/2006 |
| 7112696 | Preparation of phosphorus compounds The present invention relates to a process for preparing phosphorus compounds and intermediates. ... | 09/26/2006 |
| 7105702 | P-chiral phospholanes and phosphocyclic compounds and their use in asymmetric catalytic reactions Chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic al... | 09/12/2006 |
| 7105689 | Compound suitable for use as a catalyst or for producing a catalyst system derived from a bis-phosphorinane A compound of formula (I) suitable as a catalyst or for the preparation of a catalyst system: L1-X-L2 (I) is provided, in which X is a lower alkylene group, an arylene group or an alkarylene group; L | 09/12/2006 |
| 7101959 | Polymerization catalysts A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts. ... | 09/05/2006 |
| 7098369 | Process for the production of primary alcohols A process for producing primary alcohols from secondary alcohols and/or tertiary alcohols and/or ketones, wherein the process comprises reacting a compound selected from a secondary alcohol, a tertiary alcohol, a ketone, or mixtures thereof, with carbon monoxide and... | 08/29/2006 |
| 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 system includes (a) a source of Pt group metal cations,... | 08/01/2006 |
| 7081544 | Chiral ligands, transition metal complexes thereof, and the catalytic use of the same The invention relates to novel chiral ligands of formula (I), the production thereof and the use of the same in catalytic reactions. ... | 07/25/2006 |
| 7078568 | Phosphine compounds, transition metal complexes with the compounds contained as ligands therein, and asymmetric synthesis catalysts containing the complexes Phosphine compounds represented by the following formula (1): wherein R1, R2, R3, R4, R5, R6 and R7 represent substituents, and asymmet... | 07/18/2006 |
| 7074965 | Diphosphine A system comprising a diphosphine of the formula R1>P—(CH)n—PR2R3 where R1 is a divalent radical which together with the phosphorus atom to which it is linked forms an unsubsti... | 07/11/2006 |
| 7071357 | Diazaphosphacycles A diazaphosphacycle may be synthesized by reacting a phosphine with a diimine and optionally one or more equivalents of an acid halide, a sulfonyl halide, a phosphoryl halide, or an acid anhydride in the substantial absence of O2 to form the diazaphosphac... | 07/04/2006 |
| 7067076 | Flame retardant phosphonate additives for thermoplastics The invention is directed to a phosphonate composition having flame retardant properties. The phosphonate composition of the invention has the general formula: wherein R1 | 06/27/2006 |
| 7067701 | Preparation of phosphorus-containing compounds useful in the preparation of biphosphine ligands This invention relates to processes for making phosphorus compounds R2P—X—PR2, R2P-M, R2P-L and R3P, and the novel cation R2P+(L)-X—P+(L)R2, where R represents a... | 06/27/2006 |
| 7056854 | 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 system includes (a) a source of Pt group metal cations,... | 06/06/2006 |
| 7026473 | Process for the carbonylation of pentenenitrile Processes to prepare 5-cyanovaleric acid or its ester are provided, by carbonylation of a pentenenitrile, wherein pentenenitrile is reacted with carbon monoxide and water and/or an alcohol in the presence of a catalyst system. The catalyst system contains: ... | 04/11/2006 |
| 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, C1-100-alkyl, C7-20-aralkyl, C7-20-alkaryl, and C6-12-aryl: R | 03/14/2006 |
| 7002728 | Electrophoretic particles, and processes for the production thereof Copper chromite particles can advantageously be used as black particles in electrophoretic media and displays. Preferably, the copper chromite particles are coated with a silica coating and a polymer coating. ... | 02/21/2006 |
| 6992201 | Process for preparing phosphites and transition metal complexes The present invention relates to a process for preparing phosphites and their transition metal complexes and also to their use in catalytic processes. ... | 01/31/2006 |
| 6987202 | Phosphine compounds, transition metal complexes with the compounds contained as ligands therein, and asymmetric synthesis catalysts containing the complexes Phosphine compounds represented by the following formula (1): wherein R1, R2, R3, R4, R5, R6 and R7 represent substituents, and asymmetric syn... | 01/17/2006 |
| 6984744 | Phosphine ligands The invention is concerned with new phosphine ligands of formula I wherein R1 and R2 are independently of each other unsubstituted alkyl, aryl, cycloalkyl or heteroaryl, or alkyl, ary... | 01/10/2006 |
| 6946578 | Process for producing phenoxyphosphazene compound, flame-retardant resin composition, and flame-retardant resin molding An improved phenoxyphosphazene compound is produced by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least... | 09/20/2005 |
| 6927262 | Bridged biphospholes and metallocenes prepared therefrom The invention relates to novel bridged biphosphole ligands according to the general formula: where R2, R3, R4 are chosen from hydrogen, alkyl, aryl or silyl, R1 is chosen fro... | 08/09/2005 |
| 6914161 | Process to prepare a multidentate phosphine compound Multidentate phosphate compounds of formula (1) are prepared by reacting a 9-phosphabicyclononane, in the presence of an acid catalyst, with a 9-phospha-bicyclononane alkenylmonophosphine of formula (2), some of which, e.g., P-{2-(2-butenyl)}-9-phospha-bicyclononane... | 07/05/2005 |
