Patents
Sitemap › C07 - Organic chemistry › C07B - General methods of organic chemistry; Apparatus therefor › C07B 57 - Separation of optically-active organic compounds
Patents for C07B 57 - Separation of optically-active organic compounds (3,737)
06/1992
06/03/1992EP0488047A1 Process for the preparation of optically active 4-oxochroman-2-carboxylic acid derivatives
06/03/1992EP0487667A1 PROCESS FOR PRODUCING ENANTIOMER-PURE $g(a)-HYDROXYLPROPONIOALDEHYDE DERIVATIVES
05/1992
05/29/1992WO1992008702A1 Chiral hydantoin resolution
05/29/1992CA2073762A1 Process for the resolution of chiral hydantoins
05/27/1992EP0487237A1 New optically active metoprolol tartrate salts, and method of preparing them, and method of preparing optically active metoprolol from the tartrate salts
05/27/1992EP0487091A2 Optical isomer separating agents
05/27/1992EP0487030A2 Process of optical resolution for the preparation of an optically active cyclic amine
05/22/1992CA2055869A1 Optical isomer separating agents
05/05/1992US5110976 Insecticidal composition comprising more than one active ingredient
04/1992
04/29/1992CN1060653A Crystallization of optical isomers of leukotriene antagonists
04/14/1992US5104989 Cyclization; separation; hydrogenation
04/14/1992US5104547 Separating materials for chromatography comprising cyclodextrin chemically bonded to a support via a carbamic acid group
04/14/1992US5104543 Liquid chromatography using cellulose triacetate stationary phase and polar solvent mobile phase
04/08/1992EP0478721A1 New benzocycloalkene carboxylic acid and process for producing it.
04/07/1992US5103025 Process for the resolution of enantiomers of benzopyran derivatives
04/07/1992US5102999 Process for the preparation of an intermediate of diltiazem
03/1992
03/22/1992WO1992005151A1 Crystallization of optical isomers of leukotriene antagonists
03/22/1992CA2091245A1 Crystallization of optical isomers of leukotriene antagonists
03/18/1992EP0474854A1 Alcohol-ester separation by recrystallization.
03/18/1992EP0474853A1 Protected hydroxy method for alcohol-ester separation.
03/17/1992US5097059 Resolution process of intermediates useful for the preparation of diltiazem
03/11/1992EP0474200A2 Process for the resolution of racemic 2,2-dimethyl cyclopropane carboxylic acid
03/05/1992WO1992003404A1 Process for transforming (benzoyl-3 phenyl)-2 propionic acid into an s(+) isomer
03/05/1992CA2089558A1 Process for transforming r(-)-benzoyl-3-phenyl)-2-propionic acid into an s(+)-isomer
03/05/1992CA2050560A1 Process for resolution of racemates of 2,2-dimethylcyclopropanecarboxylic acid
03/03/1992US5093490 Stereospecific synthesis
03/03/1992CA1296733C Process for producing chiral glycine derivatives
02/1992
02/26/1992CN1058956A Separating of cis-chrysanthemumic acid
02/20/1992WO1992002283A1 Chiral separation media
02/19/1992EP0471498A2 Optical resolution method
02/19/1992EP0471082A1 Process for separating optical isomers
02/18/1992US5089662 Miticides
02/18/1992US5089642 Optically active carboalkylated amino alcohols and their utilization in optical resolution
02/18/1992US5089138 Separating with an agent comprising an aliphatic ester of a polysaccharide
02/11/1992US5087728 Process for producing carboxylic acids and esters thereof
02/11/1992US5087698 Using L(+)tartaric acid
02/07/1992CA2048286A1 Optical resolution method
02/05/1992EP0469739A1 Stationary phase for enantiomeric resolution in liquid chromatography
01/1992
01/29/1992EP0468592A2 Process for the preparation of S(+)-6-methoxy-alpha-methyl-2-naphtalene-acetic acid
01/29/1992CN1058214A 1,3-oxathiolane nucleoside analogues
01/14/1992WO1992000965A1 Neuromuscular blocking agents
01/14/1992US5080795 Supported chiral liquid membrane for the separation of enantiomers
01/08/1992EP0464488A2 Optically active N-alpha-fluoroacryloyl-aminoacid derivatives, their preparation, optically active polymers prepared therefrom and their use for the separation of racemates
01/08/1992EP0464487A1 Optically active alpha-fluoro-acrylamides, their preparation, polymers thereof and their use in the separation of racemates
01/07/1992US5078886 Separation of mixtures by two-phase systems
01/04/1992CA2045971A1 Optically active .alpha.-fluoroacrylamides
01/02/1992DE4020349A1 Verfahren zur herstellung von enantiomerenreinen (alpha)-hydroxypropionaldehyd-derivaten A process for the preparation of enantiomerically pure (alpha) -hydroxypropionaldehyd derivatives
12/1991
12/27/1991EP0462776A2 Preparation of optically active arylaliphatic carboxylic acids
12/24/1991WO1992000275A1 PROCESS FOR PRODUCING ENANTIOMER-PURE α-HYDROXYLPROPONIOALDEHYDE DERIVATIVES
12/24/1991US5075009 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide
12/24/1991CA2065395A1 Process for producing enantiomer-pure .alpha.-hydroxylproponioaldehyde derivatives
12/19/1991CA2043649A1 Preparation of optically active aliphatic carboxylic acids
12/18/1991EP0461541A2 Process for the resolution of 2,2-dimethylcyclopropane carboxylic acid racemate
12/11/1991CN1056876A Preparation of substituted piperidines
12/08/1991WO1991018910A1 Cyclic chiral compounds
12/08/1991CA2064234A1 Cyclic chiral compounds
12/04/1991EP0459530A1 Alkyl-substituted phenylcarbamate derivative of polysaccharide
12/04/1991EP0458823A1 A process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines.
12/03/1991CA1292732C Separation agent for optical isomers
12/01/1991WO1991018878A1 Preparation of substituted piperidines
11/1991
11/24/1991WO1991017816A1 Supported chiral liquid membrane for the separation of enantiomers
11/24/1991CA2083388A1 Support chiral liquid membrane for separation of enantiomers
11/23/1991WO1991017977A1 Process for the stereoselective preparation of phenylisoserin derivatives
11/23/1991CA2079313A1 Process for the stereoselective preparation of phenylisoserine derivatives
11/14/1991WO1991017159A1 1,3-oxathiolane nucleoside analogues
11/14/1991CA2337748A1 1,3-oxathiolane nucleoside analogues
11/07/1991DE4014252A1 (-)-1-(4'-Amino-3'-cyanophenyl)-2-iso-propyl-amino-ethanol - for treating fatty degeneration, obstructive lung disorders, allergic bronchial asthma, spastic bronchitis and premature labour
11/06/1991EP0455269A1 Packing for use in resolution
11/06/1991EP0455155A1 Separation of cimaterol enantiomers
10/1991
10/23/1991EP0453330A1 Process for the preparation of (-) (2R,3S)-2,3-epoxy-3-(4-methoxyphenyl) propionic acid methylester and its enantiomer
10/22/1991US5059328 Separation agent comprising 1,3-glucan
10/17/1991WO1991013066A3 METHOD FOR PREPARING CIS-β-PHENYLGLYCIDIC-(2R,3R) ACID
10/16/1991EP0452000A2 Preparation of optically active norbornyl amine derivatives
10/09/1991EP0450504A1 Preparative chromatographic separation for the production of enantiomerically pure hetrazepines
10/09/1991CN1055175A Benzocycloalkenecarboxylic acid and process for its prepn.
10/02/1991EP0448823A2 Separation materials
10/01/1991WO1991015472A1 Alcohol-ester separation by recrystallization
10/01/1991WO1991015471A1 Protected hydroxy method for alcohol-ester separation
10/01/1991US5053407 Optically active pyridobenzoxazine derivatives and anti-microbial use
10/01/1991CA2058306A1 Alcohol-ester separation by recrystallization
09/1991
09/28/1991WO1991014671A1 New benzocycloalkene carboxylic acid and process for producing it
09/28/1991CA2055602A1 Benzocycloalkenecarboxylic acid and process for it's preparation
09/24/1991CA1289565C2 Dihydropyridine-3,5-dicarboxylic acid ester derivatives
09/12/1991DE4006923A1 Sepn. material for chromatography - consists of cyclodextrin chemically bonded onto carrier via carbamic acid gps.
09/11/1991EP0445604A2 Separation materials for chromatography
09/05/1991WO1991013066A2 METHOD FOR PREPARING CIS-β-PHENYLGLYCIDIC-(2R,3R) ACID
09/05/1991WO1991013046A1 Process for separating optical isomers
08/1991
08/27/1991US5043495 Complexing with tertiary diamine compound
08/21/1991EP0442584A1 Process for the preparation of an optically active amino acid amide
08/21/1991CN1053920A Method of resolving cis-3-amino-4-(2-(2-furyl) eth-1-yl)-1- methoxycarbonylmethyl-azet idin-2-one
08/20/1991US5041643 Process for the production of R(+)-aminocarnitine and S(-)-aminocarnitine
08/20/1991US5041573 Chromatography separation
08/20/1991US5041226 Separating with an agent comprising aliphatic ester of polysaccharide
08/15/1991WO1991012072A1 Separation by carrier mediated transport
08/15/1991CA2076041A1 Separation by carrier mediated transport
08/14/1991EP0441543A1 Method of resolving cis 3-amino-4-[2-(2-furyl)eth-1-yl]-1-methoxycarbonylmethyl-azetidin-2-one
08/14/1991EP0441471A1 Optical resolution
08/07/1991CN1013441B Optically active propanone derivative and process for producing same
08/07/1991CA2035550A1 Method of resolving cis 3-amino-4-[2-(2-furyl)eth-1-yl]-1-methoxycarbonylmethyl-aze idin-2-one
08/06/1991US5037987 Reacting ester with benzyl alcohol then benzoyl tartaric acid, crystallization, hydrogenation, reacting with oxalyl chloride and esterifying
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