Patent application number | Description | Published |
20090156833 | Process for the Preparation of Enantiomerically Pure 1-Substituted-3-Aminoalcohols - A process for the preparation of N-monosubstituted β-aminoalcohol sulfonates of formula (Ia), (Ib): | 06-18-2009 |
20100130745 | PROCESS FOR THE PREPARATION OF OPTICALLY ACTIVE ETHENYLPHENYL ALCOHOLS - In one aspect, the present invention relates to a process for the preparation of an optically active alcohol of formula | 05-27-2010 |
20100190987 | PROCESS AND INTERMEDIATE FOR THE PRODUCTION OF A TERTIARY ALCOHOL AS AN INTERMEDIATE IN THE SYNTHESIS OF MONTELUKAST - The tertiary alcohol α-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-2-(1-hydroxy-1-methylethyl)benzene-propanol, the (αS)-enantioner of which is an intermediate in the production of montelukast, is produced by reacting the novel lactone of formula (II) with a methylmagnesium halide in an ethereal solvent in the presence of lanthanum trichloride and lithium chloride. The lactone II can be prepared by reacting a corresponding hydroxyester with a Grignard reagent in the absence of a lanthanoid compound or with a strong base. | 07-29-2010 |
20100217004 | PROCESS FOR THE PRODUCTION OF TERTIARY ALCOHOLS | 08-26-2010 |
20110207945 | Process for the preparation of enantiomerically pure 1-substituted-3-aminoalcohols - Provided is a process for the preparation of enantiomerically pure 1-substituted-3-aminoalcohols, particularly of (S)-(−)- and (R)-(+)-3-N-methylamino-1-(2-thienyl)-1-propanol, by asymmetrically hydrogenating salts of a carboxylic acids with an aminoketone of formula (II), wherein R | 08-25-2011 |
20110207946 | Process for the preparation of enantiomerically pure 1-substituted-3-aminoalcohols - Provided is a process for the preparation of enantiomerically pure 1-substituted-3-aminoalcohols, particularly of (S)-(−)- and (R)-(+)-3-N-methylamino-1-(2-thienyl)-1-propanol, by asymmetrically hydrogenating salts of a carboxylic acids with an aminoketone of formula (II), wherein R | 08-25-2011 |
20120022228 | PURIFICATION OF AMPHOTERIC PRODUCTS, OR OF PRODUCTS LIABLE TO BE CONVERTED INTO AMPHOTERIC PRODUCTS - A process for purifying at least one product from a substrate containing at least one product, includes subjecting the substrate to centrifugal partition chromatography in an ion exchange displacement mode to purify the at least one product from the substrate, the at least one product being an amphoteric product. | 01-26-2012 |
20120316350 | PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY PURE 1-SUBSTITUTED-3-AMINOALCOHOLS - A process for the preparation of N-monosubstituted β-aminoalcohol sulfonates of formula (1a), (1b): | 12-13-2012 |