Patents for C07B 53 - Asymmetric syntheses (6,231)
08/1996
08/07/1996EP0576617B1 Composition and method containing optically pure (s) metoprolol
08/06/1996US5543571 Preparation of optically active hydrazines and amines
08/06/1996US5543559 Using a rhodium catalyst having an optically active piphosphine ligand
07/1996
07/31/1996CN1127741A Asymmetrical hydrogenation of ketoisophorone derivatives
07/24/1996EP0666905A4 Molecules with antibody combining sites that induce asymmetry.
07/18/1996WO1996021507A1 Catalyst for asymmetric diels-alder reactions
07/16/1996US5536879 Process for preparing optically active amino alcohols
07/16/1996US5536858 Catalysts for hydrogenation using phosphinearylsulfonates
07/16/1996US5536719 Nervous system disorders
07/04/1996WO1996020202A1 Optically active diphosphines and method for preparing same by resolution of the racemic mixture
07/03/1996EP0719772A1 Optically active imidazolidinone derivative and process for producing the same
07/03/1996EP0719755A1 Process for the preparation of the enantiomers of 2-(2-fluoro-4-biphenyl)-propionic acid
07/02/1996US5532409 Lactonization of methanesulfonylcarnitine, aziding, catalytic hydrogenation
07/02/1996US5532402 Process for producing optically active hydroxyalkylphosphonates
07/02/1996US5532395 Hydrogenation catalysts )
06/1996
06/27/1996DE19506021C1 Catalytic enantioselective redn. of ketone cpds.
06/26/1996EP0718265A2 Method for producing an alcohol
06/19/1996CN1124962A Enantioselective oxazaborolidine catalysts
06/13/1996WO1996017821A1 Process for the preparation of enantiomerically pure (s,s) aminoepoxides, key intermediates for hiv protease inhibitors, via their chlorohydrines
06/12/1996EP0716062A1 A method of preparing D-amino acid-N-(S)-alpha-alkylbenzylamide
06/09/1996CA2163931A1 Method of preparing d-amino acid-n-(s)-.alpha.-alkylbenzylamide
06/04/1996US5523437 Useful in asymmetric synthesis reactions
05/1996
05/29/1996CN1123544A Optically active 3-(1-(alkylamino)) alkyl pyrrolidines
05/15/1996EP0711771A2 Substituted-1,3-oxathiolanes with antiviral properties
05/15/1996EP0711752A2 Cis-4-(2,2,3,3-tetrafluoropropoxy)cinnamic acid nitrile and trans-4-(2,2,3,3-tetrafluoro)cinnamic acid nitrile and process for their preparation
05/14/1996US5516953 Process for the preparation of optically active cycloolefins
05/14/1996US5516776 Enantioselective synthesis of antifolates
05/09/1996CA2162344A1 Cis-4-(2,2,3,3-tetrafluoropropoxy) cinnamonitrile and trans-4(2,2,3,3-tetrafluoropropoxy) cinnamonitrile and a process for their preparation
05/08/1996CN1121921A New benzothiadiazine compound, process for its preparation and the pharmaceutical compositions which contain it
05/07/1996US5514805 Assymetric hydrogenation of a pyridinecarbonyl compound, rhodium phosphine catalyst
05/07/1996CA1338314C Ligand-accelerated catalytic asymmetric dihydroxylation
05/02/1996WO1996012692A1 PROCESS FOR PRODUCING DERIVATIVES OF 4a,5,9,10,11,12,-HEXAHYDRO-6H-BENZOFURO[3a,3,2-ef][2]BENZAZEPINE
05/01/1996EP0708764A1 Enanthioselective preparation of thiazole derivatives
04/1996
04/30/1996US5512689 Process for the preparation of intermediates in the synthesis of chiral thiazolidine-2,4-dione derivatives
04/25/1996WO1996011928A1 Enantioselective synthesis of seven-membered carbocycles and tropanes
04/25/1996CA2202615A1 Enantioselective synthesis of seven-membered carbocycles and tropanes
04/23/1996US5510519 Optically active secondary amine compound, process for producing optically active secondary amine compound and process for producing optically active carboxylic acid by using said compound
04/23/1996US5510503 Bisphosphines for asymmetric hydrogenation catalysts
04/23/1996US5510470 Contains a dideoxysaccharide; used with zero valent nickel as a catalyst for enantioselective hydrocyanation
04/17/1996EP0558656B1 New methods for the catalytic reduction of organic substrates
04/17/1996CN1120532A Ring-substituted 2-amino-1,2,3,4-tetra-hydronaphthalenes and 3-aminochromones
04/16/1996US5508438 Phosphorus compounds
04/02/1996US5504255 Optically active compounds and a method for producing them
04/02/1996US5504108 Optically pure 4-aryl-2-hydroxytetronic acids
03/1996
03/28/1996WO1996009290A1 Racemisation and asymmetric transformation processes used in the manufacture of levobupivacaine and analogues thereof
03/27/1996EP0702667A1 Method for preparing difunctional compounds having high enantiomeric purity
03/14/1996WO1996007642A1 PROCESS FOR PRODUCING A β-AMINO ALCOHOL
03/14/1996DE4431530A1 Verfahren zur Herstellung eines beta-Aminoalkohols A method for producing a beta-aminoalcohol
03/14/1996CA2198460A1 Process for producing a .beta.-amino alcohol
03/13/1996CN1031262C Ring-substituted 2-animo-1,2,3,4-tetra hydronaphthalenes and 3-aminochromanes
02/1996
02/28/1996EP0698028A1 Enantioselective oxazaborolidine catalysts
02/28/1996EP0659184B1 Optically active hydroquinine (amino-3 phenyl)-1 ethanesulfonate, preparation and use thereof
02/27/1996US5495054 Tetrahydroindeno[1,2-D][1,3,2]oxazaboroles and their use as enantioselective catalysts
02/27/1996CA1338089C Sulfonic acid esters
02/22/1996WO1996005206A1 Novel process for the preparation of diisopinocampheylchloroborane
02/21/1996EP0697404A1 New enantiomerically pure pyridyl cycloalkylethyl amines and their salts as well as process for their production
02/21/1996EP0697015A1 Optically active 3-(1-(alkylamino))alkyl pyrrolidines
02/21/1996EP0500572B1 Preparation of mixtures of cypermethrin or cyfluthrin isomers enriched in more active species
02/14/1996EP0696575A1 Process for the preparation of optically active aminoalcohols
02/14/1996CN1116850A Optically active beta-aminoalkoxyborane complex
02/13/1996US5491266 Reacting chiral compound in presence of optically active metal-ligand complex
02/13/1996US5491243 Intermediate useful for the asymmetric synthesis of duloxetine
02/13/1996US5491233 Using enantiomerically enriched chiral metal catalyst, acidic rate enhancing additive
02/07/1996CN1116207A Manufacture of 2-keto-l-gulonates
02/07/1996CN1116204A Processes for the diastereoselective synthesis of nucleosides
02/06/1996US5489682 Catalytic asymmetric reduction of enamines
01/1996
01/31/1996EP0600020B1 Asymmetric syntheses
01/30/1996US5488172 Chiral phosphorus compounds
01/30/1996US5488131 Synthesis of compounds with predetermined chirality
01/25/1996WO1996001804A1 Method for producing calcium salts of [s,s]-ethylenediamine-n,n'-disuccinic acid
01/25/1996WO1996001803A1 A process for producing [s,s]-ethylenediamine-n,n'-disuccinic acid
01/25/1996WO1996001801A1 A method for producing [s,s]-ethylenediamine-n,n'-disuccinic acid from its calcium salt
01/24/1996EP0693058A1 Improvements in or relating to chiral auxiliaries
01/17/1996EP0692484A1 Benzothiadiazine derivative process for its preparation and pharmaceutical compositions containing it
01/17/1996EP0692478A1 Process for the preparation of optically active 4 substituted (S)-2-oxazolidinone, optically active (S)-aminoalcohols and utilization of there compounds
01/17/1996EP0692471A1 Process for the preparation of optically active 3-hydroxypyrrolidine derivatives with high optical purity
01/17/1996EP0692470A1 Process for the preparation of optically active 1-substituted-2-(aminomethyl)pyrrolidine derivatives
01/17/1996CN1115181A Process for the preparation of 9-amino camptothecin
01/16/1996US5484902 Hydrocyanation of vinyl aromatics
01/10/1996EP0691325A1 Asymmetric hydrogenation of ketoisophorone derivatives
01/03/1996EP0690055A1 Stereoselective process for making endo-tropanamine and like compounds
01/02/1996US5481026 Addition polymerizable to chromatographic supports for separation of racemic mixtures
01/02/1996US5481008 Process for the preparation of optically active compounds
12/1995
12/28/1995CA2152312A1 Stereoselective process for making endo-tropanamine and like compounds
12/26/1995US5478941 Enantiomers of 1-[(4-chlorophenyl)phenylmethyl]-4-[(4-methylphenyl) sulfonyl]piperazine
12/19/1995USRE35128 Reacting hydroxyl protected cyanohydrin derivative with Grignard reagent, followed by imination with primary amine, and reduction, and removal of protecting group
12/19/1995CA2077542C Chiral catalysts for enantioselective synthesis
12/07/1995WO1995032937A1 TETRAHYDROINDENO[1,2-d][1,3,2]OXAZABOROLES AND THEIR USE AS ENANTIOSELECTIVE CATALYSTS
12/07/1995WO1995029165A3 Benzocycloalkylaz0lethione derivatives as dopamin beta-hydroxylase inhibitors
12/05/1995US5473076 Enantiomerically pure intermediates for (quinolin-2-yl-methoxy) phenylacetic acids
12/05/1995US5473066 Process for preparing benzothiazepine derivatives
11/1995
11/29/1995EP0684233A1 Pipecolic acid derivatives, their preparation and use as intermediates
11/29/1995CN1112563A Water-soluble phosphine-derivatives
11/23/1995WO1995031450A1 Asymmetric synthesis of chiral secondary alcohols
11/23/1995CA2190511A1 Asymmetric synthesis of chiral secondary alcohols
11/21/1995US5468901 Process for the preparation of optically active methionine amide
11/14/1995US5466867 Method for producing [S,S]-ethylenediamine-N,N'-disuccinic acid from its calcium salt
11/08/1995EP0680484A1 OPTICALLY ACTIVE $g(b)-AMINOALKOXYBORANE COMPLEX
11/02/1995WO1995029171A1 Preparation of arthropodicidal oxadiazines
11/02/1995WO1995029165A2 Benzocycloalkylaz0lethione derivatives as dopamin beta-hydroxylase inhibitors
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