Patent application number | Description | Published |
20080200695 | 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-catalysed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis. | 08-21-2008 |
20080287713 | 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 likewise provides for the use of the substances in question for preparing these catalysts. | 11-20-2008 |
20090036713 | PROCESS FOR THE HYDROGENATION OF IMINES - The present invention relates to a process for the hydrogenation of imines with hydrogen in the presence of iridium catalysts. In particular the present invention relates to a process for the hydrogenation of imines with hydrogen under elevated pressure in the presence of an iridium catalysts and with or without an inert solvent, wherein the reaction mixture comprises a phosphonium chloride, bromide or iodide in the presence or in the absence of an acid, which can be an organic or inorganic acid, soluble or insoluble in the reaction mixture. Suitable imines are especially those that contain at least one (Formula I) group. If the groups are substituted asymmetrically and are thus compounds having a prochiral ketimine group, it is possible in the process according to the invention for mixtures of optical isomers or pure optical isomers to be formed if enantioselective or diastereoselective iridium catalysts are used. | 02-05-2009 |
20090253907 | CYCLOPENTADIENYL, INDENYL OR FLUORENYL SUBSTITUTED PHOSPHINE COMPOUNDS AND THEIR USE IN CATALYTIC REACTIONS - A phosphine compound represented by general formula (1) | 10-08-2009 |
20100105945 | NOBLE METAL CATALYSTS - Catalyst systems consisting of supported or unsupported transition metal catalysts which have modifiers on the surface. The modifiers have sulphur-containing functionalities (G | 04-29-2010 |
20120245348 | New Cyclopentadienyl, Indenyl or Fluorenyl Substituted Phosphine Compounds and their Use in Catalytic Reactions - Disclosed herein are phosphine compounds represented by the general formula (4): | 09-27-2012 |
20140058101 | New Cyclopentadienyl, Indenyl or Fluorenyl Substituted Phosphine Compounds and Their Use in Catalytic Reactions - The invention is directed to a phosphine compound represented by general formula (1) wherein R′ and R″ independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R′ and R″ are joined together to form with the phosphorous atom a carbon-phosphorous monocycle comprising at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cp | 02-27-2014 |
20140086997 | COATING COMPOSITION SUITABLE FOR PHARMACEUTICAL OR NUTRACEUTICAL DOSAGE FORMS - The invention relates to a coating composition suitable for the coating of a pharmaceutical or nutraceutical dosage form, comprising a core comprising one or more pharmaceutical or nutraceutical active ingredients, wherein the coating composition is comprising at least 20% by weight of an enteric core/shell polymer composition derived from an emulsion polymerisation process, wherein either the core of the core/shell polymer composition is formed by a water-insoluble, not cross-linked polymer or copolymer and the shell of the core/shell polymer composition is formed by an anionic polymer or copolymer or vice versa. | 03-27-2014 |