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)
04/1990
04/25/1990EP0365495A2 9-Anthrylalkyl compounds, their preparation and their use
04/25/1990EP0365213A2 Method of resolving cis 3-amino-4-[2-(2-furyl)vinyl]-1-methoxy-carbonylmethyl-azetidin-2-one and di-p-toluoyl-tartaric acid salts thereof
04/25/1990EP0365212A2 Method of resolving cis 3-amino-4-[2-(2-furyl)eth-1-YL]-1-methoxycarbonylmethyl-azetidin-2-one and malic acid salts thereof
04/19/1990WO1990003962A1 Process for the preparation of 7-substituted-hept-6-enoic and -heptanoic acids and derivatives and intermediates thereof
04/18/1990EP0363934A1 Process for the preparation of 7-substituted-hept-6-enoic and -heptanoic acids and derivatives thereof
04/18/1990EP0363428A1 Conversion of pyrethroid isomers to more active species.
04/17/1990US4918190 Crystalline complex compounds of propargyl alcohols and tertiary diamines, and process of separation and purification of propargyl alcohols using the same
04/17/1990US4917817 Optical active compound, process for producing same and liquid crystal composition containing same
04/17/1990CA1267892A1 Processes and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers
04/11/1990EP0215010B1 Insecticidal composition comprising more than one active ingredients
04/03/1990US4914208 Optically active salts of a substituted thiazolidine-4-carboxylate and 3-chloro-2-hydroxypropyltrimethyl ammonium, their preparation and use
03/1990
03/27/1990US4912205 Alkyl-substituted phenylcarbamate derivative of polysaccharide
03/20/1990US4910309 Enrichment of optical of 2-(4-aryloxyphenoxy)-propionic acids by crystallization as hydrates
03/20/1990US4910214 Sedative, analgesics
03/06/1990US4906780 Process for the production of optically active beta-methylcholine
02/1990
02/20/1990CA1266057A1 PROCESS FOR THE OPTICAL RESOLUTION OF RACEMIC MIXTURES OF .alpha.-NAPHTHYLPROPIONIC ACIDS
02/07/1990EP0353538A2 Process for the preparation of intermediates for the synthesis of diltiazem
02/06/1990CA1265536A1 Production of optically pure organoboranes
01/1990
01/30/1990US4897198 Separation agent comprising 1,3-glucan
01/24/1990EP0352168A1 Process for the purification of D-hydroxyphenoxy propionic acid
01/23/1990CA1264765A1 Process for the optical resolution of racemic mixtures of o-naphthyl-propionic acids
01/10/1990EP0350038A2 Enrichment of optical purity of 2-(4-aryloxyphenoxy) propionic acids by crystallization as hydrates
01/09/1990US4892659 Separation agent comprising aliphatic ester of polysaccharide
12/1989
12/27/1989EP0348351A1 Process for the preparation of substituted anilides
12/20/1989EP0347066A1 New enantiomers and their isolation
12/19/1989US4888433 Process for the preparation of optically active alpha-arylalkanoic acids and novel intermediates thereof
12/05/1989US4885375 Esterification, alkylation, enantiomeric purification
11/1989
11/29/1989CN1037503A Process for obtaining enantiomers of 2-arylpropionic acids
11/28/1989CA1263402A1 Insecticidal ester
11/23/1989EP0342903A1 Improved resolution of 3-(4-methoxyphenyl)-glycidic acid with in situ conversion to alkyl esters
11/15/1989EP0341562A1 Process for preparing(+)-and(-)-beta-[(2-amino-1-naphthalenyl)thio]-alpha-hydroxy-4-methoxy-benzenepropanoic acid
11/08/1989EP0340663A2 Process for the obtention of enantiomers of 2-arylpropionic acids
11/08/1989EP0340247A1 New process for the antipodal separation of bicyclo 3.3.0]octane-3,7-dion-2-carboxylic acid esters and their 7-monocetals.
11/07/1989US4879038 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide
10/1989
10/25/1989EP0339006A1 Process for preparing S-metoprolol and intermediates therefor
10/17/1989US4874473 Separation of diastereomers by extractive distillation
10/05/1989WO1989009235A1 Substituted cyclodextrins and process for chromatographic separation of chiral organic compounds
09/1989
09/12/1989US4865770 Process for the optical resolution of 2-(6-methoxy-2-naphthyl)propionic acid
09/05/1989US4864058 Process for making optically active naphtho[1,2-b][1,4]thiazepin-4(5H)-ones
08/1989
08/29/1989CA1258874A1 Process for the resolution of a racemate
08/16/1989EP0208758B1 Pyrethroidal composition comprising more than one active ingredients
08/08/1989US4855464 Optically active ketals, processes for their preparation and their use in the synthesis of alpha-arylalkanoic acids
08/02/1989EP0325965A2 A process for the optical resolution of a racemic acid
08/01/1989US4853477 Complexing with naphthalene derivative, crystallizing out of less soluble enantiomer
08/01/1989CA1258071A1 Process for the preparation of apovincaminic acid esters
07/1989
07/25/1989US4851382 An optically active amino acid derivative for resolving racemic mixtures
07/12/1989CN1033795A Preparation method of optically-active cotton phenol
07/11/1989US4847409 Recovery of L-amino acid isomers from their racemic mixtures
07/11/1989US4846968 Cellulose triacetate and carrier; chromatographic elution
07/04/1989US4845272 Salt formation, preferential crystallization
07/04/1989US4845126 Insecticidal composition comprising more than one active ingredient
06/1989
06/27/1989US4842935 Surface hydrophobic filler with adsorbed lipophilic crown compound
06/07/1989CN1033271A 2,2-difluorocyclopropylethane derivatives processes for their preparation and their use as pesticides
05/1989
05/31/1989EP0318469A1 Packing for use in resolution
05/31/1989EP0318425A1 Derivatives of 2,2-difluorcyclopropyl ethane, process for their preparation and their use in pest control
05/31/1989EP0318377A2 Enantiomeric derivatives of amino acids, process for their preparation and their pharmaceutical applications
05/23/1989US4833273 Process for the resolution of 1-aminoindanes
05/23/1989US4833268 Threo-adrenalinecarboxylic acid, and the production and uses thereof
05/16/1989US4830921 Packing material for liquid chromatography
05/16/1989US4830752 Separation agent comprising 1,3-glucan
04/1989
04/26/1989EP0312726A1 Optically active salt of a substituted thiazolidine-4-carboxylic acid and a 3-chlor-2-hydroxypropyl trimethyl ammonium, their preparation and use
04/25/1989US4824964 Method for preparing optically active N-acetylindoline-2-carboxylic acid
04/18/1989US4822894 Pure cis enantiomers of fused pyrrole ring carboxylates
04/12/1989EP0224902B1 Process for the preparation of d-threo-1(p-methylsulfonylphenyl)-2-dichloracetamido-propandiol-1,3-(thiamphenicol)and use of suitable intermediate products
04/04/1989US4818704 Method for the separation and determination of enantiomeric amine compounds using an optically active agent
04/04/1989US4818394 Separating agent
03/1989
03/29/1989EP0309324A1 Process for the preparation of N-alkylated amino acids and their esters, use in the synthesis of carboxyalkyl dipeptides
03/21/1989US4814477 Dioxaphosphorinanes, their preparation and use for resolving optically active compounds
03/14/1989CA1251220A1 Threo-adrenalinecarboxylic acid, and the production and uses thereof
02/1989
02/22/1989CN1031221A Process for the optical resolution of -cis or-trans-permethric acid
02/21/1989CA1250290A1 PROCESS FOR RESOLUTION OF OPTICAL ISOMERS OF .beta.- ADRENERGIC AGENTS
02/07/1989CA1249841A1 PROCESS FOR THE PREPARATION OF CERTAIN ENANTIOMERIC PAIRS OF .alpha.-CYANO-3-PHENOXY-4-FLUORO-BENZYL PERMETHRATE
01/1989
01/25/1989EP0300652A1 Optical isomer of an imidazole derivative
01/25/1989EP0300497A1 Optically active compound, process for producing same and liquid crystal composition containing same
01/25/1989EP0300448A2 Separation medium
01/25/1989CN1030576A Optical isomers of imidazole
01/18/1989EP0299793A2 Packing materials for analysing enantiomer mixtures by liquid chromatography
01/17/1989US4798895 Process for preparing levomepromazine hydrogen maleate
01/11/1989EP0298480A1 Process for the optical resolution of (+)-cis or (+)-trans-permethric acid
01/11/1989EP0298395A1 A process for the optical resolution of 2-(6-methoxy-2-naphthyl) propionic acid
12/1988
12/29/1988WO1988010249A1 Conversion of pyrethroid isomers to more active species
12/28/1988CN88103528A Conversion of pyrethroid isomers to more active species
11/1988
11/29/1988US4788305 Heterocyclic hemiacetals
11/22/1988US4786731 Resolution of enantiomers of 2-(phenyl or phenoxy/propionic acids using optically active alkanolamines
11/22/1988US4786416 Cellulose triacetate
11/22/1988US4786415 Separation agent comprising aliphatic ester of polysaccharide
11/01/1988US4782174 Process for the preparation of certain pairs of enantiomers of α-cyano-3-phenoxy-4-fluorobenzyl permethrate
10/1988
10/19/1988EP0185079B1 N-substituted butyramide derivatives
09/1988
09/28/1988CN88101278A Process for optical resolution bicyclo (3,3,0)-octa-3,7-dione-2-carboxylic ester and 7-ketal
09/27/1988US4774338 Preparation of optically active azole derivatives
09/22/1988WO1988007050A1 New process for the antipodal separation of bicyclo[3.3.0]octane-3,7-dion-2-carboxylic acid esters and their 7-monocetals
09/07/1988EP0108813B1 Grafted chromatographic filler and method for analyzing enantiomer mixture using same
08/1988
08/31/1988EP0280285A2 Process for making and isolating (R)-2-hydroxy 4-phenylbutyric acid and esters
08/31/1988EP0279844A1 RESOLUTION OF dl-METHYL 3- 4-(2-HYDROXY-3-ISOPROPYLAMINO)PROPOXY]PHENYLPROPIONATE (dl-ESMOLOL)]
08/23/1988US4766250 Racemization catalyst for amino acids
08/10/1988EP0277620A2 Process for the preparation of optically active beta-methyl choline
07/1988
07/27/1988EP0275523A1 Optically active tetrahydro-2-furanone derivative as a microbicide
07/26/1988CA1239646A1 Tartaric acid monoesters of optically active alkanols and alkanolamines, method for their preparation and their use
07/19/1988CA1239408A1 Process for isolating levamisole from tetramisole
07/05/1988CA1238923A1 Optically-active di[3-chloro-2-oxy- propyltrimethylammonium]-tartrate
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