Patent application number | Description | Published |
20080242863 | Process For the Manufacture of a Precursor of Vitamin B1 - The present invention relates to a novel process for the manufacture of Grewe-diamine comprising the following step: hydrolyzing a compound of formula (II), | 10-02-2008 |
20080275275 | Process for the Preparation of Ubihydroquinones and Ubiquinones - A process for the preparation of ubihydroquinones and ubiquinones by condensation of a prenol or isoprenol with a hydroquinone or derivative thereof in the presence of 0.005-1.0 mol % of a catalyst which is a Broensted-acid, a Lewis-acid from the group consisting of a derivative of Bi or In or an element of group 3 of the periodic table of the elements, a heteropolyacid, an NH- or a CH-acidic compound, and optionally oxidizing the ubihydroquinone obtained. | 11-06-2008 |
20090043106 | Manufacture of Lactones - The present invention relates to a process for the manufacture of cyclic monocarboxylic esters (lactones) and related compounds by hydrogenation of cyclic dicarboxylic acid anhydrides in the presence of metal catalysts. | 02-12-2009 |
20090048455 | Manufacture of Thiolactones - The present invention relates to a process for the manufacture of cyclic thio esters (thiolactones) and related compounds by hydrogenation of cyclic thioanhydrides in the presence of metal catalysts. | 02-19-2009 |
20090176998 | Process for the manufacture of chroman derivatives, especially alpha-tocopherol and alka-noates thereof - The present invention relates to novel processes for the manufacture of chroman derivatives such as α-tocopherol (TCP) and alkanoates thereof, especially α-tocopheryl acetate (TCPA), whereby at least one step of the processes is carried out in the presence of a Lewis acid or a mixture of a Lewis acid with a Bronsted acid as the catalyst under pressure, preferably at an absolute pressure of at least 1.1 bar. | 07-09-2009 |
20090221860 | TRANSPORT OF ETHYNE IN FORM OF A-ALKYNOLS AS ETHYNE PRECURSORS - The present invention relates to a new method for a safe transport of ethyne in form of α-alkynols as precursors for ethyne. The new method comprises three steps. In a first step the synthesis of the α-alkynol(s) is performed by reacting ethyne with (a) carbonyl compound(s). The second step comprises the transport of the resulting α-alkynol(s) in a safe manner, whereas the safety requirements for this transport are not as high as for ethyne because α-alkynol(s) are normally classified for transportation as hazardous class 3. In the third step the α-alkynol(s) can be cleaved and the ethyne and the carbonyl compound(s) can be obtained in the cleavage reaction and can be separated to yield pure products for further applications. | 09-03-2009 |
20090227819 | PROCESS FOR UBIQUINONE INTERMEDIATES - A process for the preparation of terminally ethylenically unsaturated isopolyprenols characterized in that a carbonyl compound is reacted with ethine in the presence of ammonia and low amounts of an alkaline metal hydroxide and, if desired, the terminally acetylenically unsaturated isopolyprenol obtained is partially hydrogenated in the presence of a catalyst suitable for selective hydrogenation. | 09-10-2009 |
20100048945 | PROCESS FOR THE ACYLATION OF ORGANIC HYDROXY COMPOUNDS - A process for acylating organic hydroxy compounds, characterized in that the acylation is effected in the presence of a metal oxide which does not carry a catalyst and the use of such metal oxides for acylating organic hydroxy compounds. | 02-25-2010 |
20100063325 | NOVEL PROCESS FOR THE PREPARATION OF TIMBERONE - This invention relates to a novel process for the preparation of timberone useful for perfume or cosmetics. | 03-11-2010 |
20100204520 | PROCESS FOR THE PREPARATION OF (E, E)-FARNESYL ACETONE - A process for the preparation of E-farnesyl acetone characterized by reaction of nerolidol with isopropenylmethyl ether in the presence of an acidic catalyst at elevated temperature and isolation by fractionated distillation. | 08-12-2010 |
20100217017 | NOVEL REACTION WITH A GOLD CATALYST - The invention relates to a process for the catalytic conversion of a carbohydrate, an alcohol, an aldehyde or a poly-hydroxy compound in the presence of a catalyst containing gold in a solvent. | 08-26-2010 |
20110015412 | PRIMARY ALLYLIC ALCOHOL AND AG - The invention relates to a process of reacting a primary allylic alcohol with a compound containing a) a metal selected from the group consisting of Ag, Au, Ce, Mn, Ni, Ru, Re, Zn and Co preferably Ag and b) an oxidant like TEMPO (2,2′,6,6′-tetra-methylpiperidin-1-oxyl) or its derivates and c) a co-oxidants selected from the group of peroxodisulfates (PDS), H | 01-20-2011 |
20110144358 | Process for the manufacture of trimethylhydroquinone dialkanoates - The present invention is directed to a process for the manufacture of a 2,3,5-trimethylhydroquinone dialkanoate comprising reacting ketoisophorone with an acylating agent in the presence of an indium salt as the catalyst. Preferred are indium(III) salts such as indium trichloride or indium tris (trifluoromethanesulfonate). Further aspects of the present invention are a process for the manufacture of 2,3,5-trimethylhydroquinone using 2,3,5-trimethylhydroquinone dialkanoate as the starting material, especially a process for the manufacture of 2,3,5-trimethylhydroquinone by transesterification of 2,3,5-trimethylhydroquinone dialkanoate, as well as a process for the manufacture of a-tocopherol and its alkanoates, especially of (all-rac)-a-tocopherol and its acetate, comprising the reaction of ketoisophorone to 2,3,5-trimethylhydroquinone dialkanoate according to the present invention. Furthermore, the present invention also deals with a process for the manufacture of formulations of a-tocopherol and its alkanoates, especially of formulations of (all-rac)-a-tocopherol and its acetate, comprising the reaction of ketoisophorone to 2,3,5-trimethylhydroquinone dialkanoate according to the present invention. | 06-16-2011 |
20110213185 | MANUFACTURE OF GAMMA-DELTA-UNSATURATED KETONES - A process for the manufacture of gamma-delta -unsaturated ketones of formula (R | 09-01-2011 |
20110237841 | NOVEL SELECTIVE HYDROGENATION CATALYST COMPRISING PALLADIUM ON POROUS SILICA GLASS AND THE USE THEREOF - The present invention is directed to a catalyst comprising palladium on a porous Silica glass as carrier, as well as to the use of such catalyst for the selective hydrogenation of alkines to alkenes. | 09-29-2011 |
20120029240 | ALLYL AND PROPARGYL ETHERS - Allyl and propargyl ethers of the formula X—C(R | 02-02-2012 |
20120172617 | RESVERATROL INTERMEDIATES DAL - A process for the preparation of 1-(3,5-diacetoxyphenyl)-ethanol by catalytic hydrogenation of 3,5-diacetoxy-acetophenone in the presence of a Ni-alloy as catalyst in a C | 07-05-2012 |
20120197046 | PROCESS FOR THE MANUFACTURE OF 2-PENTYN-1-OL - The present invention is directed to a process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol via the following intermediates (I), (II) wherein R | 08-02-2012 |
20120283476 | SYNTHESIS OF GREEN KETONE INTERMEDIATE - A process for the preparation of 1-ethynyl-3,3-dimethylcyclohexan-1-ol from dimedone by a reaction sequence of reduction and ethynylation and its further transformation into green ketone. | 11-08-2012 |
20130131390 | PROCESS FOR THE PRODUCTION OF SUBSTITUTED ELECTRON RICH DIPHENYLACETYLENES - The present invention relates to an improved process of production of substituted diphenylacetylenes (tolanes) of formula (I) which are starting materials for production of stilbenes products. | 05-23-2013 |