Patents
Patents for C07B 55 - Racemisation; Complete or partial inversion (688)
05/1988
05/04/1988CN86107049A The manufacturing method of dl-lysene
04/1988
04/19/1988US4739071 Transesterification rearrangement
02/1988
02/02/1988US4723035 Using boron tribromide or aluminum tribromide with an azo compound
01/1988
01/27/1988CN87104772A Method for epimerizing an optically active benzylalcohol derivative
01/20/1988EP0253592A1 A method for epimerizing an optically active benzylalcohol derivative
01/20/1988EP0253571A1 Process for resolution and race mization of amines with acidic alpha-hydrogens
01/19/1988US4720558 Process for inverting the configuration of secondary alcohols
01/12/1988CA1231349A1 Process for the racemization of optically active aminoacids
01/07/1988EP0251058A2 Process for the racemization of optically active phenoxy-propionic acid esters and their derivatives
09/1987
09/09/1987EP0235940A1 Method for racemization of chrysanthemic acid or its ester
07/1987
07/21/1987US4681969 Process for the preparation of an enantiomeric pair of isomers of cyfluthrin
06/1987
06/24/1987EP0226043A1 Process for the preparation of enantiomers
06/02/1987US4670464 Epimerization of isomers of alpa-cyano-4-fluoro-3-penoxybenzyl 3-(z-2-chloro-3,3,3-trifluoropropen-1-yl)-2,2-dimethyl cyclopropane carboxylate
05/1987
05/06/1987EP0220907A2 Process for the preparation of 1,6-dichloro-1,6-dideoxy-beta-D-fructofuranosyl-4-chloro-4-deoxy-alpha-galactopyranoside
04/1987
04/01/1987EP0216196A2 Racemization of optically active compounds having a bromine substituted chiral carbon atom
03/1987
03/18/1987EP0214572A2 Racemization of optically active compounds having a chlorine substituted chiral carbon atom
03/03/1987US4647692 Racemization and resolution of α-amino acids
01/1987
01/20/1987US4638086 Benzoic or phenylacetic acid or derivatives
01/17/1987CN85101840A Processes and intermediates for making 16-phenoxy-and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers
12/1986
12/30/1986EP0206993A1 Sulphonic-acid esters
12/30/1986EP0206436A2 Enzymatic production of optical isomers of 2-halopropionic acids
12/23/1986CA1215717A1 Process for converting a stereoisomeric ester into its diastereoisomer
10/1986
10/29/1986EP0199407A1 Process for racemizing an optically active N-benzylidene amino-acid amide
10/29/1986EP0102520B1 Process for the inversion of the configuration of optically active compounds, and optically active intermediates for this process
10/15/1986EP0197375A1 Process for the inversion of the configuration of secondary alcohols
09/1986
09/23/1986US4613690 Racemization of optically active compounds having a bromine substituted chiral carbon atom
09/23/1986US4613689 Racemization of optically active compounds having a chlorine substituted chiral carbon atom
09/03/1986EP0193405A1 Racemization process
08/1986
08/26/1986US4608442 Process for preparing 4-hydroxy-2-cyclopentenones
07/1986
07/22/1986US4602096 Acetic anhydride
07/22/1986US4601987 Lipase catalyed assymetric esterification
07/15/1986US4600785 Processes and intermediates for making 16-phenoxy and 16-substituted phenoxy-prostatrienoic acid derivatives
05/1986
05/06/1986US4587357 Preparation of enantiomers of a substituted fluorenyloxyacetic acid
04/1986
04/09/1986EP0176947A1 Preparation of enantiomers of a substituted fluorenyloxyacetic acid
04/02/1986EP0175840A2 Racemisation process of N-acetyl-D(L)-alpha-amino-carboxylic-acids
03/1986
03/19/1986EP0174739A1 Process for obtaining an insecticidal product and composites thereof
03/12/1986EP0173921A1 Process for the racemization of an alpha-amino acid
02/1986
02/19/1986EP0171894A1 Insecticidal enantiomeric pair of a phenoxybenzyl cyclopropanecarboxylate derivative, and process for its preparation
07/1985
07/03/1985EP0146935A2 Processes and intermediates for making 16-phenoxy- and 16-substituted phenoxy- prostatrienoic acid derivatives and their stereoisomers
04/1985
04/17/1985EP0137371A2 Process for the racemisation of optically active aminoacids
03/1985
03/20/1985EP0134303A1 Menthyl 2,2-dimethylcyclopropanecarboxylate and resolution of the same
02/1985
02/20/1985EP0133251A2 Process for preparing 4-hydroxy-2-cyclopentenones
12/1984
12/11/1984US4487956 Intemediates for insecticides enzyme inhibitors
11/1984
11/27/1984US4485257 Treatment with a lewis acid; insesticidal use
10/1984
10/23/1984CA1176640A1 PROCESS FOR RACEMIZING OPTICALLY ACTIVE .alpha.-AMINO ACIDS OR A SALT THEREOF
07/1984
07/31/1984US4463188 Heating the acid halide derivative
03/1984
03/14/1984EP0102520A1 Process for the inversion of the configuration of optically active compounds, and optically active intermediates for this process
02/1984
02/28/1984US4434107 Process for preparing an optically active p-hydroxyphenylglycine or a salt thereof
10/1983
10/25/1983US4411836 Heating in presence of fatty or aromatic acid salt or tertiary amine
10/19/1983EP0091753A1 Method for racemization of optically active 2,2-dimethylcyclopropane-1-carboxylic acid halide
09/1983
09/21/1983EP0088998A1 Process for racemising optically active S-(carboxy-methyl) cysteine
08/1983
08/30/1983US4401820 Process for racemizing optically active α-amino acids or a salt thereof
07/1983
07/05/1983US4391980 For inversion of configuration of optically active compounds
01/1983
01/19/1983EP0070114A1 A process for preparing an optically active p-hydroxyphenyl-glycine or a salt thereof
10/1982
10/06/1982EP0061880A1 Process for preparing racemized cyclopropanecarboxylic acids
09/1982
09/28/1982CA1132560A1 Process for inverting the configuration in optically active compounds and new optically active intermediates required therefor and the salts thereof
08/1982
08/24/1982CA1130311A1 PROCESS FOR THE TRANSFORMATION OF AN ESTER OF CHIRAL ACID AND OF AN OPTICALLY ACTIVE .alpha.-CYANATED SECONDARY ALCOHOL OF (R) STRUCTURE TO AN ESTER OF CHIRAL ACID AND OF AN .ALPHA.-CYANATED SECONDARY ALCOHOL OF (S) STRUCTURE
08/04/1982EP0057092A1 Process for racemizing an optically active alpha-amino acid or a salt thereof
01/1982
01/26/1982CA1117142A1 Process for the racemisation of optically active n-acyl-amino acids in aqueous solution
10/1981
10/13/1981US4294966 Salt formation
09/1981
09/15/1981CA1109079A1 Process for the preparation of dl-phenyl-glycine amide
03/1981
03/10/1981CA1097369A1 No translation available
02/1981
02/24/1981US4252744 Method of racemizing optically active 1-phenylethylamine
01/1981
01/20/1981US4246424 Method for racemization of optically active amines
01/13/1981US4245116 Racemization of optically active 2-(4-chlorophenyl)-3-methylbutyric acid
12/1980
12/02/1980US4237313 Heating to 150c
06/1980
06/03/1980CA1078864A1 Process for the conversion of an ester of a chiral acid and of an optically active .alpha.-cyanated secondary alcohol to an ester of a chiral acid and of a racemic .alpha.-cyanated secondary alcohol
02/1980
02/06/1980EP0007605A1 A process for inverting the configuration in optically active compounds and optically active intermediate compounds and their salts required therefor
01/1980
01/09/1980EP0006284A1 Racemizing of optically active alpha-substituted-alpha-phenylacetic acids
01/08/1980US4182906 Racemization of optically active 2,2-dimethyl-3-(1'-alkenyl)-cyclopropane-1-carboxylic acids
01/08/1980US4182904 Method of racemizing optically active N-acyl amino acids in aqueous solution
01/08/1980CA1069535A1 Process of racemizing an optically active phenyl glycine amide with or without a substituted phenyl group
06/1979
06/13/1979EP0002297A2 Process for the preparation of DL-phenyl-glycine amide
06/13/1979EP0002289A1 Process for converting a stereoisomeric ester into its diastereoisomer; crystalline (-)-S-alpha-cyano-3-phenoxybenzyl (+)-S-alpha-isopropyl-4-chlorophenylacetate
06/12/1979US4158016 Method for racemization of optically active amines
04/1979
04/24/1979US4151195 Novel racemization process
04/03/1979CA1051889A1 Resolution/racemization of aminolactam compounds
01/1979
01/23/1979US4136195 Insecticidal cyclopropane carboxylates
01/09/1979US4133826 Reaction of optically active or racemic mixture of esters with base
12/1978
12/05/1978US4128584 Hydrolysis
11/1978
11/21/1978CA1042917A1 Method for racemization of optically active amines
09/1978
09/12/1978CA1038406A1 Process for recovering phenylalkylamines
09/05/1978US4111994 Acid hydrolysis
09/05/1978US4111993 Slat formation with formic acid, hydrolysis
06/1978
06/20/1978US4096186 Process for racemizing optically active amino compounds
01/1977
01/04/1977US4001334 Reaction with hydroxylamine followed by hydrolysis
11/1976
11/02/1976US3989750 Lewis acid
03/1976
03/02/1976US3941776 Racemization of aminolactam compounds
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