Patent application number | Description | Published |
20120302801 | HYDROGENATION PROCESS - The present invention relates to a process of reacting specific compounds, which are defined below with hydrogen in the presence of a structured catalyst based on sintered metal fibers (SMF) coated by a ZnO layer with Pd-nanoparticles, to reactions of these specific compounds with hydrogen in the presence of said catalyst and an organic base as well as to vitamins, carotinoids, perfume ingredients, and/or food or feed ingredients prepared by using this reaction. | 11-29-2012 |
20130197272 | ISOMERIZATION OF BETA-KETO-ALLENES - Isomerization of β-keto-allenes of the general formula I wherein R | 08-01-2013 |
20130211105 | ACYLATIONS IN MICRO REACTION SYSTEMS - A method for acylating tertiary alcohols and phenolic compounds with carboxylic acids or their anhydrides in micro-reaction systems wherein the acylation is effected in the absence of any catalyst including water at residence times of at most 30 minutes. | 08-15-2013 |
20130217923 | NOVEL STRUCTURED CATALYST - The present invention relates to novel structured catalysts based on sintered metal fibers (SMF) coated by a basic oxide layer with Pd-nanoparticles, to reactions of organic compounds with hydrogen in the presence of said catalyst and an organic base as well as to vitamins, carotinoids, perfume ingredients, and/or food or feed ingredients prepared by using this reaction. | 08-22-2013 |
20130310607 | PROCESS FOR PREPARING PSEUDOIONONE - Use of pure lanthanum oxide which is obtained by calcination of oxygen-containing lanthanum salts at temperatures of at least 700° C. as heterogeneous catalyst in the aldol condensation of citral and acetone to give pseudoionone, and process for the preparation of pseudoionone by aldol condensation of citral and acetone in the liquid phase using pure lanthanum oxide. | 11-21-2013 |
20140206880 | PROCESS FOR 4-METHYLOXAZOLE-5-CARBOXAMIDE - A process for the preparation of 4-methyl-oxazole-5-carboxamide, an intermediate in the synthesis of pyridoxine, by reacting lower alkyl 4-methyl-oxazole-5-carboxy-late with a molar excess of anhydrous, liquid ammonia. | 07-24-2014 |
20140323767 | PROCESS FOR THE PRODUCTION OF 1,3,3-TRIMETHYL-2-(3-METHYLPENT-2-EN-4-YNYL)CYCLOHEX-1-ENE - The present invention relates to an improved process for the production of 1,3,3-trimethyl-2-(3-methylpent-2-en-4-ynyl)cyclohex-1-ene, highly enriched in the Z-isomer, and the use of such compounds in organic syntheses, especially in processes forming intermediates (building blocks) the synthesis of vitamin A or β-carotene or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin. | 10-30-2014 |
20140350289 | NEW ACID CHLORIDE - The present invention relates to new organic compounds, to their synthesis as well as to their use in organic synthesis, especially in processes forming intermediates (building blocks) for the synthesis of vitamin A or β-carotene or other carotenoids. | 11-27-2014 |
20140378695 | NOVEL PROCESS FOR THE MANUFACTURE OF METHYL LIMONITRILE - The present invention is directed to a process for the manufacture of methyl limonitrile comprising a mixture of 3,7-dimethyl-2,6-nonadiene nitrile, 3,7-dimethyl-3,6-nonadiene nitrile and 7-methyl-3-methylene-6-nonene nitrile comprising the following steps: a) reacting 6-methyl-5-octen-2-one with cyano acetic acid and removing carbon dioxide and water, wherein the reaction and the removal of carbon dioxide and water are performed in the presence of a base and a co-base 1 in an organic solvent, and wherein the organic solvent is a solvent which forms a heteroazeotrop with water; b) removing the solvent and the base of the reaction mixture obtained after having performed step a) or step c) by distillation to obtain a reaction mixture, whereby this step may optionally be performed in the presence of a co-base 2; c) isomerizing the reaction mixture obtained after having performed step a) or step b) to obtain an isomerized reaction mixture in the presence of a co-base 2; whereby step b) can be performed before or after step c). | 12-25-2014 |
20150018585 | METAL POWDERDOUS CATALYST COMPRISING A COCRMO-ALLOY - The present invention is related to a new metal powder catalytic system (catalyst) comprising a cobalt/chrome-alloy as a carrier, its production and its use in hydrogenation processes. | 01-15-2015 |
20150025267 | METAL POWDERDOUS CATALYST COMPRISING A FE-ALLOY - The present invention is related to a new metal powder catalytic system (catalyst) comprising a Fe-alloy as a carrier, its production and its use in hydrogenation processes. | 01-22-2015 |
20150031597 | NOVEL PROCESS FOR THE MANUFACTURE OF METHYL LIMONITRILE - The present invention is directed to a process for the manufacture of methyl limonitrile comprising a mixture of 3,7-dimethyl-2,6-nonadiene nitrile, 3,7-dimethyl-3,6-nonadiene nitrile and 7-methyl-3-methylene-6-nonene nitrile comprising the following steps: a) reacting 6-methyl-5-octen-2-one with cyano acetic acid and removing carbon dioxide and water, wherein the reaction and the removal of carbon dioxide and water are performed in the presence of a base and a co-base in an organic solvent, wherein the base is pyridine, wherein the co-base is 1,4-diamino butane, and wherein the organic solvent is a solvent which forms a heteroazeotrop with water; b) removing the solvent and pyridine of the reaction mixture obtained after having performed step a) or step c) by distillation to obtain a reaction mixture; c) isomerizing the reaction mixture obtained after having performed step a) or step b) to obtain an isomerized reaction mixture; whereby step b) can be performed before or after step c). | 01-29-2015 |
20150073174 | DEVICE USEFUL FOR HYDROGENATION REACTIONS (I) - The present invention relates to a device for treatment of material transported through the device comprising at least one porous element consisting of specific solid metallic structure which allows cross-flow of the material through the porous element and wherein the porous element is coated by a non-acidic metal oxide which is impregnated by palladium (Pd). | 03-12-2015 |
Patent application number | Description | Published |
20130211080 | PROCESS FOR THE MANUFACTURE OF TMHQ - The present invention is directed to a process for the manufacture of 2,3,5-trimethyl-hydro-p-benzoquinone comprising the following steps: a) hydrogenating 2,6-dimethyl-p-benzoquinone with hydrogen in the presence of a hydrogenation catalyst in an organic solvent to obtain 2,6-dimethyl-hydro-p-benzoquinone; b) reacting 2,6-dimethyl-hydro-p-benzoquinone with a secondary amine and formal-dehyde in an organic solvent to obtain 2,6-dimethyl-3-(N,N-disubstituted aminomethyl)-hydro-p-benzoquinone; c) reacting 2,6-dimethyl-3-(N,N-disubstituted aminomethyl)-hydro-p-benzoquinone with hydrogen in the presence of a hydrogenolysis catalyst in an organic solvent to obtain 2,3,5-trimethylhydro-p-benzoquinone; wherein the organic solvent in all steps a), b) and c) is independently selected from the group consisting of methyl tert.-butyl ether, ethyl tert.-butyl ether, tert.-amyl ether, methoxycyclopentane and any mixtures thereof. Preferably the organic solvent used in all steps a), b) and c) is the same. | 08-15-2013 |
20140081042 | PREPARATION OF 4-ACETOXY-2-METHYLBUTANAL BY CATALYTIC CARBON CARBON DOUBLE BOND HYDROGENATION - The present invention relates to a new way for the production of 4-acetoxy-2-methyl-butanal, wherein a non-acidic catalytic system is used. | 03-20-2014 |
20150031910 | CATALYTIC SYNTHESIS OF VITAMIN A INTERMEDIATE - The present invention relates to a process of production of a compound, which is useful as an intermediate (building block) in organic synthesis, especially in the synthesis of vitamin A or β-carotene and derivatives thereof, e.g. canthaxanthin, astax-anthin or zeaxanthin. | 01-29-2015 |