| Patents for C07B 53 - Asymmetric syntheses (6,231) |
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| 03/18/1999 | WO1999012877A1 Enantioselective reduction of ketones with a silane agent/metal compound/chiral ligand system |
| 03/18/1999 | CA2298533A1 Reduction enantioselective de cetones avec un systeme agent silanique/compose metallique/ligand chiral |
| 03/17/1999 | EP0902011A1 $g(g)-OXO-HOMOPHENYLALANINE DERIVATIVES AND PROCESS FOR PRODUCING HOMOPHENYLALANINE DERIVATIVES BY REDUCING THE SAME |
| 03/17/1999 | EP0901997A1 Process for producing optically active alcohol compound |
| 03/17/1999 | EP0901996A1 Process for producing optically active amines |
| 03/10/1999 | EP0900787A1 Process for preparing pyrrolidine derivatives |
| 03/10/1999 | EP0900214A1 Process for preparation of pyrimidine derivatives |
| 03/09/1999 | US5880285 Asymmetric hydrogenation of an imine derivative in the presence of an optically active complex containing a diphosphine ligand and iridium |
| 03/03/1999 | EP0899259A1 Process for the preparation of cis-hexahydroisoindolines |
| 02/16/1999 | US5872273 Chiral diphosphine compound intermediate for preparing the same transition metal complex having the same diphosphine compound as ligand and asymmetric hydrogenation catalyst |
| 02/16/1999 | US5872256 Cyclobutenedione derivative, process for preparing the same, and nonlinear optical element |
| 02/10/1999 | EP0895990A1 Method for the preparation of 1-pyruvyl-L-proline |
| 02/09/1999 | US5869704 Water-dispersible or water-soluble D-tocotrienol compounds and methods for making therefor |
| 02/09/1999 | US5869657 Cyclization; hydrogenation; reacting with a dialkoxymethane |
| 02/06/1999 | CA2244536A1 Process for preparing 1-pyruvyl-l-proline |
| 02/04/1999 | WO1999005100A1 Ionic compounds with delocalized anionic charge, their use as components of ionic conductors or catalyst |
| 02/04/1999 | DE19732805A1 Bis-chloro:phosphane production |
| 02/03/1999 | EP0894087A2 Method for obtaining pure enantiomers of a pyridazinone derivative |
| 02/03/1999 | CN1041936C Preparation for 2-keto-L-gulonates |
| 01/27/1999 | CN1206415A Process of making 3-phenyl-1-methylenedioxyphenyl-indane-2-carboxylic acid derivatives |
| 01/27/1999 | CN1206011A Novel diphenylarsines |
| 01/26/1999 | CA1340332C Process for producing optically active benzene-sulfonamide derivatives |
| 01/12/1999 | US5859248 Process for the production of a β-amino alcohol |
| 01/12/1999 | US5859031 Small molecule inhibitors of rotamase enzyme activity |
| 01/07/1999 | EP0889049A1 Novel diarsine compounds |
| 01/07/1999 | EP0889048A1 Preparation of optically active phospholanes, their metal complexes and their use in asymmetric synthesis |
| 01/07/1999 | EP0888262A1 Cycloalkyl derivatives and the solid-phase synthesis of such derivatives |
| 01/06/1999 | CN1204314A Process for preparing optically active carboxylic acids |
| 01/05/1999 | US5856540 Asymmetric monolithiation of ferrocene compound using n-butyllithium in presence of a homochiaral tertiary amine, and reacting the chiral monolithium compound insitu with a chlorophosphine; a ligand in transitional metal complexes |
| 01/05/1999 | US5856497 Asymmetric synthesis of α-cycloalkylalkyl substituted methanamines |
| 12/30/1998 | WO1998058735A1 Homogeneous oxidation catalysis using metal complexes |
| 12/30/1998 | EP0887350A1 Chromene derivatives, process for their preparation and pharmaceutical compositions containing them |
| 12/30/1998 | EP0662951B1 Process for the stereoselective synthesis of 3-substituted 2-thiomethyl propionic acids |
| 12/30/1998 | CN1203586A Preparation of chiral 3-hydroxy-2-pyrrolidinone derivatives |
| 12/30/1998 | CN1203235A New chromene compounds, process for their preparation and pharmaceutical compositions containing them |
| 12/30/1998 | CA2295006A1 Homogeneous oxidation catalysis using metal complexes |
| 12/23/1998 | EP0885897A1 Optically active diphosphine ligands |
| 12/23/1998 | CN1202492A Optically active diphosphine ligands |
| 12/22/1998 | US5852221 Optically active β-aminoalkoxyborane complex |
| 12/09/1998 | CN1041088C Optically active imidazolizone derivative and medicinal composition for treating dementia |
| 12/08/1998 | US5847222 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 |
| 12/08/1998 | US5847186 Process for preparing asymmetric compound by using metal complex |
| 12/03/1998 | WO1998054193A1 Chiral phosphorus-based ligands |
| 12/03/1998 | CA2284506A1 Chiral phosphorus-based ligands |
| 12/02/1998 | EP0880518A1 A process of making 3-phenyl-1-methylenedioxyphenyl-indane-2-carboxylic acid derivatives |
| 11/25/1998 | EP0595868B1 Process for the preparation of (s)-4-[3-(5-methyl-2-phenyl-4-oxazolyl)- 1-hydroxypropyl]bromobenzene |
| 11/24/1998 | US5840964 Second order resolution of ketals |
| 11/19/1998 | WO1998051676A1 Efficient enantioselective addition reaction using an organozinc reagent |
| 11/18/1998 | CN1040751C Process for preparation of benzothiazepine derivs. |
| 11/17/1998 | US5837877 Hydrogenating (n-benzyloxycarbonyl-)-4-amino-3-oxobutanoic alkyl ester in presence of ruthenium-phosphine complex; deblocking, cyclization, lactamization, catalysis |
| 11/11/1998 | EP0877029A2 Optically active phosphine derivative having vinyl group, polymer produced using the same as monomer and transition metal complexes of these |
| 11/04/1998 | EP0875498A2 Process for the production of the isomers (R) and (S)-Alpha-methyl-3-(trifluoromethyl)benzeneethanamine |
| 11/04/1998 | CN1198157A Dinaphtazepinium salts useful as enantioselective epoxidation catalysts |
| 11/03/1998 | CA2161969C Enantioselective oxazaborolidine catalysts |
| 10/29/1998 | CA2212203A1 Process for the production of the isomers (r) and (s)-alpha-methyl-3-(trifluoromethyl)benzeneethanamine |
| 10/28/1998 | CN1197070A Process for preparing optically active phenylglycidyl acid derivative |
| 10/27/1998 | US5827794 Supported highly-polar liquid phase chiral sulfonated binap catalyst for asymmetric synthesis of optically active compounds |
| 10/27/1998 | CA1340105C Process for the preparation of optically active 3-demethylmevalonic acidderivatives and intermediates |
| 10/22/1998 | WO1998046578A1 THE PREPARATION OF ENANTIOMERICALLY ENRICHED OXAZOLONES AND α,α-DISUBSTITUTED AMINO ACIDS |
| 10/22/1998 | CA2284591A1 The preparation of enantiomerically enriched oxazolones and .alpha.,.alpha.-disubstituted amino acids |
| 10/21/1998 | EP0871621A1 Asymmetric synthesis catalyzed by transition metal complexes with new chiral ligands |
| 10/21/1998 | CN1040319C (1)-Ritodrine |
| 10/14/1998 | CN1196046A Separation of optically active amides |
| 09/22/1998 | US5811552 Cyclobutenedione derivative, process for preparing the same, and nonlinear optical element |
| 09/17/1998 | DE19711999A1 New 2-alkyl:sulphonyl-propane:sulphonate salts |
| 09/16/1998 | EP0864586A2 Chiral compounds, synthesis and use on a support |
| 09/16/1998 | EP0864576A1 Novel amidophospine-phosphinite derivatives |
| 09/16/1998 | EP0863872A1 Preparation of chiral 3-hydroxy-2-pyrrolidinone derivatives |
| 09/16/1998 | CN1193020A Amidophosphinephosphinite compounds |
| 09/15/1998 | US5808162 Chiral unsymmetric diphosphine compound and transition metal complex containing the same as ligand |
| 09/15/1998 | US5808156 Process for the production of the isomers (R) and (S)-α-methyl-3(trifluoromethyl)benzeneethanamine |
| 09/15/1998 | US5808112 Chemical intermediate for immunosuppressants and prostaglandins |
| 09/15/1998 | US5808098 Reducing agent from aminoalcohol |
| 09/11/1998 | WO1998039345A1 6,6'-bis-(1-phosphanorbornadiene) diphosphines |
| 09/11/1998 | WO1998039276A1 Process for producing optically active amines |
| 09/09/1998 | EP0863125A1 Process for the preparation of enantiomerically pure diesters of 3-hydroxyoctandioic acid by asymmetric catalytic hydrogenation |
| 09/09/1998 | EP0862549A1 Process for preparing optically active carboxylic acids |
| 09/09/1998 | EP0674618B1 Asymmetric process for preparing florfenicol, thiamphenicol, chloramphenicol and oxazoline intermediates |
| 09/01/1998 | US5801280 Processes for preparing optically active alcohols and optically active amines |
| 09/01/1998 | US5801261 Bisphosphines as catalysts for asymmetric reactions |
| 09/01/1998 | US5801249 Chiral auxiliaries |
| 08/26/1998 | EP0860439A1 Process for preparing an optically active phenylglycidyl acid derivative |
| 08/21/1998 | CA2228196A1 Process for preparing an optically active phenylglycidyl acid derivative |
| 08/20/1998 | WO1998035934A1 η-OXO-HOMOPHENYLALANINE DERIVATIVES AND PROCESS FOR PRODUCING HOMOPHENYLALANINE DERIVATIVES BY REDUCING THE SAME |
| 08/19/1998 | EP0858992A1 Process for producing halogenated cyclopropane derivatives |
| 08/19/1998 | EP0680484B1 Optically active beta-aminoalkoxyborane complexes |
| 08/18/1998 | US5795908 Fkbp immunophilins for enzyme inhibitors |
| 08/18/1998 | CA2077541C Chiral catalysts and epoxidation reactions catalyzed thereby |
| 08/11/1998 | US5792770 Administering as sedative, tranquilizer, anxiolytic agent |
| 08/05/1998 | EP0855935A1 Chiral solid catalyst, its preparation and its use for the production of substantially enantiomerically pure products |
| 08/04/1998 | US5789609 Catalyst for assymetric synthesis, reaction of an a-cyano ester and a vinyl ketone to produce an oxo cyano ester |
| 07/29/1998 | EP0751927A4 Synthesis of compounds with predetermined chirality |
| 07/28/1998 | US5786485 Optically active beta-aminoalkoxyborane complex |
| 07/28/1998 | US5786484 Racemization and asymmetric transformation processes used in the manufacture of levobupivacaine and analogues thereof |
| 07/21/1998 | US5783738 Optically active diphosphines, preparation thereof according to a process for the resolution of the racemic mixture and use thereof |
| 07/21/1998 | US5783715 Silylated ferrocenyldiphosphines, silylated ferrocenyldiphosphines bound to inorganic or polymeric organic supports and also metal complexes thereof, their preparation and uses |
| 07/16/1998 | WO1998030569A1 Asymmetric synthesis and catalysis with chiral heterocyclic compounds |
| 07/16/1998 | WO1998030543A1 Endothelin intermediates by asymmetric conjugate addition reaction using a chiral additive |
| 07/16/1998 | CA2277161A1 Endothelin intermediates by asymmetric conjugate addition reaction using a chiral additive |
| 07/14/1998 | US5780692 Catalytic asymmetric hydrogenation of a benzophenone; simplification |