Class / Patent application number | Description | Number of patent applications / Date published |
568814000 | Preparing by reduction (e.g., by hydrogenation, etc.) | 8 |
20080269529 | Chiral Compound Suitable as a Catalyst for Asymmetric Transfer Hydrogenation - The invention relates to an enantiomerically enriched chiral compound comprising a transition metal M, which comprises four, five or six coordinating groups of which at least one pair is linked together to form a bidentate ligand, in which M is directly bound via one single σ-bond to a carbon atom of an optionally substituted and/or optionally fused (hetero)aromatic ring of said bidentate ligand and in which M is directly bound to a nitrogen atom of a primary or secondary amino group of said bidentate ligand, thereby forming a metallacycle between said bidentate ligand and the metal M, said metal M being selected from the metals of groups 8 and 9 of the Periodic Table of the Elements, in particular iron, ruthenium, osmium, cobalt, rhodium, or iridium. The chiral compound can be used as a catalyst, preferably in an asymmetric transfer hydrogenation process. The invention further relates to a process for an asymmetric transfer hydrogenation of a prochiral compound in the presence of a hydrogen donor and the chiral compound of the invention comprising a transition metal chosen from the metals of groups 8, 9 and 10 of the Periodic Table, in particular iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium or platinum as the catalyst. | 10-30-2008 |
20090023961 | RUTHENIUM CATALYSTS FOR CATALYTIC HYDROGENATION - The present disclosure relates to a process for the hydrogenation of compounds comprising one or more carbon-oxygen (C═O) double bonds, to provide the corresponding alcohol, comprising contacting the compound with hydrogen gas at and a catalyst comprising a ruthenium-aryl-aminophosphine complex. | 01-22-2009 |
20100069684 | ASSYMMETRIC HYDROGENERATION OF PROCHIRAL COMPOUNDS - The invention relates to the asymmetric (transfer) hydrogenation of a prochiral keton, prochiral imine, oxime, oxime derivative, hydrazone or hydrazone derivative, using a transition metal catalyst, characterized in that as a catalyst is used a transition metal complex of the general formula [I]: M | 03-18-2010 |
20100145106 | PRODUCTION PROCESS OF NUCLEUS-HALOGENATED METHYLBENZYL ALCOHOL - The present invention provides an industrially advantageous process for preparing nuclear halogenated methylbenzyl alcohol which is a useful substance as a raw material, an intermediate for manufacturing medicines, agricultural chemicals, etc. The process of the present invention for preparing nucleus-halogenated methylbenzyl alcohol represented by the following formula (II) comprises hydrogenating nucleus-halogenated benzene carbaldehyde represented by the following formula (I); wherein m is an integer of 0 to 3, and n is an integer of 1 to 4, with the proviso that m+n is an integer of 1 to 4, wherein m and n are the same as those in the formula (I). | 06-10-2010 |
20100286452 | HYDROGENATION OF ESTERS WITH RU/BIDENTATE LIGANDS COMPLEXES - The present invention relates to processes for the reduction by hydrogenation, using molecular H2, of a substrate containing one or two esters, or lactones, functional groups into the corresponding alcohol, or diol, with the process being carried out in the presence of a base and at least one catalyst or pre-catalyst in the form of a ruthenium complex, wherein the ruthenium is coordinated by a diphosphine bidentate ligand (PP ligand) and a diamino bidentate ligand (NN ligand) that includes at least one substituted α-carbon and one primary amine as one of the coordinating atoms. | 11-11-2010 |
20140330047 | HYDROGENATION OF STYRENE OXIDE FORMING 2-PHENYL ETHANOL - A process for preparation of 2-phenyl ethanol by catalytic hydrogenation of styrene oxide using a catalyst consisting of Pd (II) on basic inorganic support is investigated. The present invention comprises development of new Pd based catalysts. The present method yields 2-phenyl ethanol in 98% selectivity at total conversion of styrene oxide. The present process represents an environment friendly alternative to conventionally used methods in industry and eliminates the reduction step for catalyst preparation. In the present invention the active catalyst is generated in situ during the hydrogenation of styrene oxide. In addition, Pd (II) supported catalysts do not catch fire (non pyrophoric), can be stored under ambient conditions and produce very less or no dust which makes said catalysts suitable for industrial application. | 11-06-2014 |
20140357903 | PROCESS FOR HYDROGENATING KETONES IN THE PRESENCE OF RU(II) CATALYSTS - The present invention relates to a process for hydrogenating a substrate including a carbon-heteroatom double bond, the process including the step of reacting the substrate with hydrogen gas in the presence of a hydrogenation catalyst, wherein the hydrogenation catalyst is a complex of formula (I): | 12-04-2014 |
20160251287 | Chiral Siliceous Composition Useful as Chiral Heterogeneous Catalyst and a Process for the Preparation Thereof | 09-01-2016 |