| Patents for C07B 53 - Asymmetric syntheses (6,231) |
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| 07/14/1998 | US5780649 Process for preparing optically active cyclic compounds |
| 07/08/1998 | CN1187188A Small molecule inhibitors of rotamase enzyme activity |
| 07/07/1998 | US5777062 Hydrogenation catalysts |
| 07/02/1998 | WO1998028306A1 Process for the preparation of an organozinc reagent |
| 07/01/1998 | EP0850945A1 Chiral diphosphine compound, intermediate for preparing the same, transition metal complex having the same diphosphine compound as ligand and asymmetric hydrogenation catalyst |
| 07/01/1998 | EP0850931A2 Process for the preparation of optically active (R or S)-1-(4-methoxy-benzyl)-1,2,3,4,5,6,7,8-octahydro-isoquinolines |
| 07/01/1998 | EP0850214A1 Separation of optically active amides |
| 07/01/1998 | CN1186483A Separation of alpha-arylpropionic acid ester diastereomers by distillation |
| 07/01/1998 | CN1186073A Process for manufacture of optically active (R)-or (S)-1-(4-methoxy-benzyl)-8-octahydro-isoquinoline adducts of the general formula |
| 07/01/1998 | CN1038938C 不对称合成 Asymmetric Synthesis |
| 07/01/1998 | CN1038932C Stereoselective preparation of substitued piperidines |
| 06/30/1998 | US5773610 Optically active 3-(1-(alkylamino))alkyl pyrrolidines |
| 06/24/1998 | EP0849247A1 Optically active alcohol and process for the production thereof |
| 06/17/1998 | CN1185146A Asymmetric synthesis of (-) 6 -chloro-4-cyclopropyl-ethynyl-4-trifluoromethyl-1, 4dihydro-2H-3, 1-benzoxazin-2-one |
| 06/16/1998 | US5767295 Process for producing 2-substituted optically active 2,3-dihydro-4H-pyran-4-one |
| 06/16/1998 | US5767279 From 2-cyanopyridine |
| 06/16/1998 | US5767277 Optically active β-aminoalkoxyborane complex |
| 06/16/1998 | US5767276 Asymmetric synthesis catalyzed by transition metal complexes with new chiral ligands |
| 06/09/1998 | US5763688 Method for producing an alcohol |
| 06/03/1998 | EP0845450A2 Optically active alcohol and process for the production thereof |
| 06/03/1998 | CN1183408A Process for preparing intermediate in preparation of substd. peperidines |
| 06/03/1998 | CN1038591C Processes for diastereoselective synthesis of nucleosides |
| 05/28/1998 | WO1998022484A1 Heteroarylic-arylic diphosphines as chiral ligands |
| 05/28/1998 | WO1998022466A1 PROCESS FOR PREPARING MeO-Peg-PROTECTED DIHYDROQUININE OR DIHYDROQUINIDINE DERIVATIVES, NEW DIHYDROQUININE OR DIHYDROQUINIDINE DERIVATIVES AND THEIR USE |
| 05/28/1998 | DE19750007A1 New poly:alkylene glycol-modified quinine or quinidine derivatives |
| 05/27/1998 | EP0843664A1 Dinaphtazepinium salts useful as enantioselective epoxidation catalysts |
| 05/26/1998 | US5756838 Method of asymmetrically synthesizing optically active compounds using supported phase chiral sulfonated BINAP catalyst |
| 05/26/1998 | US5756809 Process for the preparation of (2RS,3RS)-3-(2'-aminophenylthio)-2-hydroxy-3-(4"-methoxyphenyl)-propionic acid methyl ester |
| 05/26/1998 | US5756799 Chiral phosphinites |
| 05/26/1998 | US5756790 Optically active cobalt (II) complexes and method for the preparation of optically active alcohols |
| 05/26/1998 | US5756760 1-substituted-2-diphenylphosphinonaphthalene and transition metal complex comprising the same as a ligand |
| 05/26/1998 | US5756731 Process for preparation of (-)3(S)-methylbenzoxazine derivative |
| 05/26/1998 | US5756706 Chemical intermediates |
| 05/20/1998 | CN1182412A Process for preparing asymmetric compound by using metal complex |
| 05/13/1998 | EP0841343A2 Ruthenium-optically active phosphine complex, process for the preparation thereof and process for the preparation of optically active 4-methyl-2-oxetanone using same |
| 05/13/1998 | EP0841318A2 Optical isomers of derivatives of campholenic aldehyde |
| 05/12/1998 | US5750794 Reduction of naphthalenone to form alcohol using organoborone reagents |
| 05/12/1998 | US5750690 Asymmetric hydrogenation process using ruthenium-diphosphine complexe |
| 05/06/1998 | EP0839818A1 Optically active diphosphine, transition metal complex containing the same, and process for producing optically active compound using the complex |
| 05/06/1998 | CA2220273A1 Optical isomers of derivatives of campholenic aldehyde |
| 05/05/1998 | US5747477 Azo derivatives of 5-aminosalicylic acid |
| 04/28/1998 | US5744634 Process for producing 2-keto-L-gulonic acid esters |
| 04/28/1998 | US5744606 Process for the preparation of optically active 3-quinuclidinol |
| 04/28/1998 | US5744596 Antivirus agent |
| 04/22/1998 | EP0582692B1 Diphosphine ligands |
| 04/22/1998 | CN1179770A Preparation of cis- 4 -0 -protected -2 -cyclopentenol derivatives |
| 04/16/1998 | WO1998015565A1 Chiral ferrocenyls |
| 04/16/1998 | WO1998015544A1 Catalytic asymmetric epoxidation |
| 04/16/1998 | CA2268255A1 Catalytic asymmetric epoxidation |
| 04/14/1998 | US5739385 Process for preparing optically active carboxylic acids |
| 04/14/1998 | US5739360 Intermediates for the synthesis of bisphosphine compounds |
| 04/14/1998 | US5739347 Reducing agents for decarbonylation |
| 04/08/1998 | EP0641304B1 Stereo-selective synthesis of 2-aryl-propionic acids of high optical purity by using chiral oxazolines |
| 04/07/1998 | US5736480 Sulfonated 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl metal complex dissolved in glass supported film of nonaqueous polar solvent (i.e. ethylene glycol); catalyst selectivity, yield, simplified recovery |
| 03/26/1998 | WO1998012202A1 Phosphine ligands |
| 03/26/1998 | WO1998012155A1 Process for preparing optically acitve alcohol by reduction with asymmetric borane |
| 03/25/1998 | EP0831099A2 Process for preparing ruthenium-phosphine complex |
| 03/24/1998 | US5731448 (+) and (-)-8-chloro-6-sulfonyloxy-octanoic acid, its derivatives, and methods for making |
| 03/19/1998 | WO1998011064A1 Stereospecific preparation of chiral 1-aryl- and 1-heteroaryl-2-substituted ethyl-2-amines |
| 03/19/1998 | WO1998011057A1 Optically active erythro-3-amino-2-hydroxybutyric esters and process for preparing said esters |
| 03/19/1998 | WO1998011053A1 Method for preparing optically active alpha-substituted benzylalcohols |
| 03/19/1998 | CA2266473A1 A method for producing optically active erythro-3-amino-2-hydroxybutyric esters and acids thereof |
| 03/19/1998 | CA2265886A1 Stereospecific preparation of chiral 1-aryl- and 1-heteroaryl-2-substituted ethyl-2-amines |
| 03/19/1998 | CA2265568A1 Method for preparing optically active alpha-substituted benzylalcohols |
| 03/18/1998 | EP0828703A1 Asymmetric synthesis of (-) 6-chloro-4-cyclopropyl-ethynyl-4-trifluoromethyl-1,4-dihydro-2h-3,1-benzoxazin-2-one |
| 03/18/1998 | EP0828699A1 Separation of alpha-arylpropionic acid ester diastereomers by distillation |
| 03/18/1998 | CN1037768C Preparation of substituted piperidines |
| 03/17/1998 | US5728899 Reduction of ketones to form alcohols |
| 03/11/1998 | EP0827943A1 Processes for the reduction of carbonyl compounds |
| 03/10/1998 | US5726188 Optically active imidazolidinone derivatives and processes for preparing them |
| 03/04/1998 | EP0826691A2 Optically active diphosphine compound, method for making the compound, transition metal complex having the compound as ligand and method for making optically active substance by use of the complex |
| 03/04/1998 | EP0826652A1 Process for preparing asymmetric compound by using metal complex |
| 03/03/1998 | US5723652 Optically active monophosphino carboxylic acid derivative |
| 02/26/1998 | WO1998007685A1 Preparation of cyclohexene carboxylate derivatives |
| 02/11/1998 | EP0823416A1 Process for producing cyclohexylamino acids |
| 02/04/1998 | EP0821679A1 Asymmetric epoxides, their synthesis and use |
| 01/29/1998 | WO1998003272A1 Processes for the preparation of 4-amino-5-chloro-6-(1-fluoroethyl)pyrimidine compounds |
| 01/29/1998 | DE19629523A1 Optically active compound preparation by intramolecular Stetter reaction |
| 01/28/1998 | EP0820460A1 Dihalogenated ferrocenes and processes for the preparation thereof |
| 01/28/1998 | EP0820439A1 Method for the asymmetrical synthesis of s-acylated derivatives of 2-mercaptomethyl 3-phenyl propanoic acid, and use thereof for synthesising n-(mercaptoacyl) amino acid derivatives |
| 01/22/1998 | WO1998002445A1 Ligands for asymmetric catalysis |
| 01/22/1998 | WO1997035841A3 Method for obtaining pure enantiomers of a pyridazinone derivative |
| 01/22/1998 | CA2254140A1 Ligands for asymmetric catalysis |
| 01/21/1998 | EP0702667B1 Method for preparing difunctional compounds having high enantiomeric purity |
| 01/20/1998 | US5710339 Bisphosphines as catalysts for asymmetric reactions |
| 01/20/1998 | US5710336 Process for the preparation of 5-6-dihydroxy-2-amino-1, 2, 3, 4-tetrahydronaphthalene derivatives |
| 01/20/1998 | US5710283 Preparation of chiral pyrrolidinone derivatives |
| 01/20/1998 | CA2116098C Asymmetric syntheses |
| 01/14/1998 | EP0817765A1 Stereoselective ring opening reactions |
| 01/14/1998 | EP0817764A1 Preparation of cis-4-o-protected-2-cyclopentenol derivatives |
| 01/14/1998 | CN1170395A Production of derivatives of 4a, 5, 9, 10, 11, 12, -bexahydro-6H-benzofuro £3a, 3, 2, -ef| £2| benzazepine |
| 01/08/1998 | WO1998000375A1 Asymmetric hydrogenation method of a ketonic compound and derivative |
| 01/08/1998 | DE19624705A1 Dendrimere auf Saccharid-Basis Saccharide-based dendrimers |
| 01/07/1998 | EP0775146A4 Novel process for the preparation of diisopinocampheylchloroborane |
| 01/02/1998 | DE19624820A1 Verfahren zur Herstellung von optisch aktiven 1-Phenyl-ethylaminen A process for preparing optically active 1-phenyl-ethylamines |
| 12/31/1997 | WO1997049665A1 Method for producing optically active 1-phenylethylamines |
| 12/30/1997 | US5703082 Enantiomers of 1- (4-chlorophenyl)phenylmethyl!- (4-methylphenyl)sulfonyl!pi |
| 12/29/1997 | EP0521099B1 Chiral catalysts and epoxidation reactions catalyzed thereby |
| 12/24/1997 | WO1997048711A1 Dendrimers based on saccharides |
| 12/18/1997 | WO1997047633A1 Asymmetric synthesis catalyzed by transition metal complexes with cyclic chiral phosphine ligands |