| Patents for C07B 55 - Racemisation; Complete or partial inversion (688) |
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| 02/07/1996 | EP0672029A4 SELECTIVE PRECIPITATION OF -g(a)-ARYL CARBOXYLIC ACID SALTS. |
| 01/30/1996 | US5488136 Esterifying with orthoformic acid ester and acid catalyst, ketalization, racemizing with alkali alkoxide, hydrolysis to racemic acid, isolation |
| 12/19/1995 | US5476964 Heating and flowing enamtiomorph through acidic ion exchange resin; recycling wastes |
| 11/22/1995 | EP0683235A1 A process for the preparation of enantiomeric 2-alkanoic acids |
| 11/22/1995 | EP0683145A1 A method for racemizing nitriles |
| 10/12/1995 | WO1995021169A3 PROCESS FOR ISOMERIZATION OF SPIROCYCLIC COMPOUNDS WITH β-AMINOCARBOXYL AND/OR β-AMINOCARBONYL SYSTEMS |
| 09/20/1995 | EP0672029A1 SELECTIVE PRECIPITATION OF $g(a)-ARYL CARBOXYLIC ACID SALTS |
| 09/12/1995 | US5449786 Method for the chemical racemization of 5-monosubstituted hydantoins by contact with anionic ion exchanger |
| 09/08/1995 | WO1995023805A1 Process for preparing [l]- or [d]-homoalanin-4-yl-(methyl)phosphinic acid and its salts by racemic resolution |
| 09/08/1995 | CA2184718A1 Process for preparing [l]- or [d]-homoalanin-4-yl-(methyl)phosphinic acid and its salts by racemic resolution |
| 09/07/1995 | DE4407197A1 Verfahren zur Herstellung von /L/-Homoalanin-4-yl-(methyl)phosphinsäure und deren Salze durch Racematspaltung A process for preparing / L / -homoalanin-4-yl (methyl) phosphinic acid and salts thereof by racemate resolution |
| 08/10/1995 | WO1995021169A2 PROCESS FOR ISOMERIZATION OF SPIROCYCLIC COMPOUNDS WITH β-AMINOCARBOXYL AND/OR β-AMINOCARBONYL SYSTEMS |
| 03/28/1995 | US5401852 Process for the stereochemical inversion of (2S,3S)-2-amino-3-phenyl-1,3-propanediols into their (2R,3R) enantiomers |
| 03/21/1995 | US5399707 Making salt of amino acid lysine, arginine or histidine with alpha-arylcarboxylic acid either by starting from second salt of anion and protonated cation of amino acid or by distilling water from amino acid-arylcarboxylic acid mixture |
| 03/07/1995 | US5395962 Optical resolution method |
| 01/10/1995 | US5380867 Crystallization of salts of optically active alpha-arylcarboxy acids |
| 11/17/1994 | EP0624568A1 Improved process for manufacturing L-(-)-carnitine from a waste product having opposite configuration |
| 08/02/1994 | US5334744 Separation of isomer pair 1 and isomer pair 2 by treating in a organic solvent in presence of alkali metal cyanide |
| 07/06/1994 | EP0544740B1 Process for transforming (benzoyl-3 phenyl)-2 propionic acid into an s(+) isomer |
| 06/09/1994 | WO1994012451A1 SELECTIVE PRECIPITATION OF α-ARYL CARBOXYLIC ACID SALTS |
| 03/22/1994 | US5296615 Process and intermediates for chiral epoxides |
| 02/08/1994 | US5284966 Intermediates for the stereochemical inversion of (2S,3S)-2-amino-3-phenyl-1,3-propanediols into their (2R,3R) enantiomers |
| 01/25/1994 | US5281750 Chiral polymers for the production of excess enantiomers |
| 01/11/1994 | US5278338 Racemization process for optically active carboxylic acids, salts and esters |
| 10/13/1993 | EP0458823B1 A process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 09/14/1993 | US5245039 Process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 08/05/1993 | WO1993015034A1 Racemization process |
| 08/05/1993 | WO1993013053A3 Isomerisation process |
| 08/05/1993 | CA2128522A1 Racemization process |
| 07/08/1993 | WO1993013053A2 Isomerisation process |
| 07/07/1993 | EP0549593A1 Method for racemization of non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids and their esters with c 1?-c 6? alcohols. |
| 06/22/1993 | US5221765 Racemization process for an optically active carboxylic acid or ester thereof |
| 06/09/1993 | EP0544740A1 Process for transforming (benzoyl-3 phenyl)-2 propionic acid into an s(+) isomer. |
| 05/19/1993 | EP0542098A1 Process of chemical racemisation of 5-monosubstituted hydantoins, device for the execution of the process and use of the hydantoin |
| 04/13/1993 | US5202484 Process for the stereochemical inversion of (2s,3s)-2-amino-3-phenyl-1,3-propanediols into their (2r,3r) enantiomers |
| 04/06/1993 | US5200555 Process for the preparation of S(+)-6-methoxy-α-methyl-2-naphthalene-acetic acid |
| 02/02/1993 | US5183939 Process for the racemization of optically active 1-aryl-alkylamines |
| 11/17/1992 | CA1310316C PROCESS FOR RESOLUTION AND RACEMIZATION OF AMINES WITH ACIDIC .alpha.-HYDROGENS |
| 08/05/1992 | CN1017705B Preparation method of optically-active cotton phenol |
| 06/16/1992 | CA1303628C Method for racemization of optically active serine |
| 06/10/1992 | EP0489682A1 Process for racemization of optically active 1-aryl-alkylamines |
| 05/26/1992 | CA1301777C Method for racemizing an optically active amino acid |
| 04/02/1992 | WO1992005275A1 A process for the preparation of enantiomeric 2-alkanoic acids |
| 03/17/1992 | US5097049 Process and intermediates for chiral epoxides |
| 03/05/1992 | WO1992003404A1 Process for transforming (benzoyl-3 phenyl)-2 propionic acid into an s(+) isomer |
| 03/05/1992 | CA2089558A1 Process for transforming r(-)-benzoyl-3-phenyl)-2-propionic acid into an s(+)-isomer |
| 02/20/1992 | WO1992002483A1 Method for racemization of non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids and their esters with c1-c6 alcohols |
| 02/19/1992 | EP0471498A2 Optical resolution method |
| 02/07/1992 | CA2048286A1 Optical resolution method |
| 02/06/1992 | DE4024836A1 Verfahren zur racemisierung A process for the racemisation |
| 01/29/1992 | EP0468592A2 Process for the preparation of S(+)-6-methoxy-alpha-methyl-2-naphtalene-acetic acid |
| 01/15/1992 | EP0465974A1 Preparation of D-histidine and derivatives thereof from L-histidine |
| 12/04/1991 | EP0458823A1 A process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines. |
| 11/26/1991 | CA1292434C Process for racemizing an optically active n-benzylidene amino-acid amide |
| 11/19/1991 | US5066826 Process for racemization of optically active 4-phenylbutanoic acid esters |
| 11/19/1991 | US5066801 Preparation of sulfonic acid esters |
| 11/06/1991 | EP0455473A1 Process and intermediates for chiral epoxides |
| 11/04/1991 | CA2041368A1 Process and intermediates for chiral epoxides |
| 09/10/1991 | US5047585 Process for racemizing an optically active N-benzylidene amino-acid amide |
| 08/21/1991 | EP0442585A1 Process for racemization of an optically active amino acid amide |
| 08/14/1991 | CN1013492B Manufacturing method of dl-lysene |
| 04/24/1991 | EP0423705A2 Process for the stereochemical inversion of (2S,3S)-2-amino-3-phenyl-1,3-propanediols into their (2R,3R) enantiomers |
| 04/23/1991 | CA1283409C2 Process and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers |
| 04/23/1991 | CA1283408C2 Processes and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their steroisomers |
| 04/10/1991 | EP0421472A1 Process for racemization of optically active 4-phenylbutanoic acid esters |
| 12/12/1990 | EP0402104A2 Racemization of a carboxylic acid |
| 12/07/1990 | CA2018295A1 Racemization of a carboxylic acid |
| 11/27/1990 | US4973745 Forming salt with p-nitrophenyl-aminopropanediol, crystallization, ibuprofen, flurbiprofen, carprofen |
| 11/27/1990 | CA1276931C2 Process and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers |
| 09/11/1990 | CA1273918A1 PROCESS FOR THE PREPARATION OF 1,6-DICHLORO-1,6- DIDEOXY-.beta.-D-FRUCTOFURANOSYL-4-CHLORO-4-DEOXY-.alpha.- GALACTOPYRANOSIDE |
| 08/28/1990 | US4952730 Formylation, reacting with a strong acid or an acid halide and hydrolysis |
| 08/22/1990 | EP0383320A1 A process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 08/18/1990 | WO1990009376A1 A process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 08/18/1990 | CA2047741A1 Process for preparation of enantiomerically pure polysubstituted 1,4-dihydropyridines |
| 08/14/1990 | US4948914 Silicon iodides or alkali metal alkoxides and titanium alkoxides |
| 08/07/1990 | US4946997 Using acid anhydride and its conjugate base |
| 07/31/1990 | CA1272213A1 Process for inverting the configuration of optically active compounds, and optically active intermediates produced in this process |
| 06/05/1990 | CA1269997A1 Racemization process |
| 05/09/1990 | EP0367515A1 Method of racemization of optically active tetrahydrofuran 2-carboxylic acid |
| 05/01/1990 | US4922013 Acetic acid, acetic anhydride |
| 04/17/1990 | CA1267892A1 Processes and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers |
| 02/06/1990 | US4898655 Reacting with bromine or mercapto compounds in presence of ultraviolet light |
| 11/29/1989 | EP0343812A1 Process for preparing trans-2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane carboxylic acid esters |
| 11/29/1989 | CN1037503A Process for obtaining enantiomers of 2-arylpropionic acids |
| 11/28/1989 | CA1263402A1 Insecticidal ester |
| 11/23/1989 | EP0342575A2 Process for the racemisation of optical active D-2-N phenylacetylamino-4-methylphosphino butyric acid |
| 11/08/1989 | EP0340663A2 Process for the obtention of enantiomers of 2-arylpropionic acids |
| 11/07/1989 | US4879411 Method for racemization of optically active serine |
| 09/12/1989 | CA1259327A1 Insecticidal product |
| 07/12/1989 | CN1033795A Preparation method of optically-active cotton phenol |
| 07/11/1989 | US4847412 Process for racemizing an optically active N-benzylidene amino-acid amide |
| 02/14/1989 | CA1249994A1 PROCESS FOR THE RACEMIZATION OF N-ACETYL-D (L)-.alpha.- AMINO CARBOXYLIC ACIDS |
| 02/08/1989 | EP0302624A2 A method for racemization of optically active serine |
| 01/31/1989 | US4801700 Isomerization with weak base, artificial sweetener |
| 01/25/1989 | EP0197375B1 Process for the inversion of the configuration of secondary alcohols |
| 01/18/1989 | EP0299760A1 Method for racemization of optically active chrysanthemic acid or its derivatives |
| 11/15/1988 | US4785089 Hypotensive agents |
| 10/11/1988 | US4777291 Using n-methyl-3-(2-methylphenoxy)-3-phenylpropylamine |
| 09/06/1988 | US4769486 Method for racemizing an optically active amino acid |
| 08/30/1988 | US4767880 With alkali metal alcoholate, phenolate, hydroxyphenoxypropionate or hydroquinone salt |