Patents
Patents for C07B 57 - Separation of optically-active organic compounds (3,737)
06/1988
06/21/1988US4752417 Method for optical resolution of phenylacetic acid derivative
06/21/1988CA1238331A1 Ethers containing organic residues with chiral atoms; process for preparing the same and their use for the resolution of alcohols or some hemiacetals
06/15/1988EP0270595A1 An optically active reagent and a method for the determination of enantiomeric amine compounds.
06/08/1988EP0270095A2 Packing material for liquid chromatography
06/08/1988CN87106871A Optically active propanone derivative and process for producing same
05/1988
05/11/1988EP0266577A1 An optically active propanone derivative and process for producing the same and use thereof
05/03/1988CA1236116A1 Process for the production of s(-)-3-/3-acetyl-4- (3-tert.butylamino-2-hydroxy-propoxy)-phenyl/-1,1- diethylurea and its salts
04/1988
04/19/1988US4739071 Transesterification rearrangement
04/13/1988EP0263107A1 Chiral two-phase system and method for resolution of racemic mixtures and separation of diastereomers
03/1988
03/30/1988EP0261388A1 Process for the separation of diastereomers of cyclopropanecarboxylic-acid esters
03/29/1988US4734507 Optically active ketals, processes for their preparation and their use in the synthesis of alpha-arylalkanoic acids
03/23/1988EP0260668A2 Separation of diastereomers
03/22/1988US4733001 Method for preparing a mixture of stereoisomers of α-cyano-3-phenoxybenzyl isovalerate ester derivatives having a higher insecticidal and acaricidal activity
03/22/1988US4732999 Optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate
03/22/1988US4732709 Racemic resolution
03/10/1988WO1988001614A1 RESOLUTION OF dl-METHYL 3-[4-(2-HYDROXY-3-ISOPROPYLAMINO)PROPOXY]PHENYLPROPIONATE [(dl-ESMOLOL)]
03/09/1988CN87105898A Process for preparing of n-(s-3-alkylenanthyl)-d-r-glutamoylaminoacetyl-d-alanine and intermediate
02/1988
02/24/1988EP0256745A2 Crystalline complex compounds of propargyl alcohols and tertiary diamines, and process of separation and purification of propargyl alcohols using the same
02/16/1988CA1232910A1 METHOD OF RESOLVING BICYCLIC IMINO-.alpha.-CARBOXYLIC ACID ESTER RACEMATES
02/09/1988US4724102 Optical resolution of racemic mixtures of alpha-naphthylpropionic acids and derivatives of said acids
01/1988
01/20/1988EP0253571A1 Process for resolution and race mization of amines with acidic alpha-hydrogens
01/19/1988US4720556 3-oxabicyclo-(3,1,0)-hexan-2-ones
01/19/1988CA1231718A1 Crystalline phenylacetate enantiomer pair, and preparation of a pesticidal enantiomer pair
01/07/1988EP0251904A1 Process for the preparation of acidic levomepromazine maleate
12/1987
12/29/1987CA1230891A1 PREPARATION OF OPTICALLY-ACTIVE .alpha.-SUBSTITUTED PHENYLACETIC ACIDS
12/22/1987US4714555 Agent for separation
12/15/1987US4713470 Using a chloromethylated polystyrene etherified by a hydroxy-containing aromatic aldehyde
12/15/1987US4713380 Production of optically pure organoboranes
11/1987
11/19/1987WO1987006929A1 An optically active reagent and a method for the determination of enantiomeric amine compounds
11/17/1987CA1229348A1 1,7-diphenyl-3-methylaza-7-cyano-8-methylnonane for use in the treatment of diseases
10/1987
10/28/1987EP0242778A1 Separation of diastereo isomers
10/20/1987US4701542 Resolution of hemiacetals and alcohols
10/07/1987EP0240013A2 Separation agent for optical isomers, process for preparing it and use thereof
10/06/1987US4698432 Process for the resolution of (±) 2-[2'-(p-fluorophenyl)-5'-benzoxazolyl]-propionic acid
10/06/1987CA1227808A1 Preparation of (-)-1-(2-fluorophenyl)-2- tertiobutylamino-1-ethanol
09/1987
09/29/1987US4697036 Process for the preparation of optically active alpha-arylalkanoic acids and novel intermediates thereof
09/23/1987EP0238044A2 Alkyl-substituted phenylcarbamate derivative of polysaccaride
09/23/1987EP0237630A2 Process for the preparation of chiral glycine derivatives
09/09/1987EP0235590A2 Improved process for the resolution of 1-aminoindanes
09/08/1987US4692543 Optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate
09/01/1987CA1226296A1 PROCESS FOR THE OPTICAL RESOLUTION OF RACEMIC MIXTURES OF .alpha.-NAPHTHYL-PROPIONIC ACIDS
08/1987
08/18/1987US4687871 Adsorption on a crystalline molecular sieves
08/12/1987EP0231515A1 Utilisation of optically active carboalkylated amino alcohols in optical resolution
07/1987
07/28/1987US4683341 Optical resolution of oxycyclopentenone
07/28/1987US4683245 Laevorotatory antipode of moprolol as an antihypertensive
07/21/1987US4681972 Separation of diastereomers
07/07/1987CA1223888A1 Process for the optical resolution of ( ) 2-(6' methoxy-2'-naphthyl)-propionic acid
06/1987
06/24/1987EP0226043A1 Process for the preparation of enantiomers
06/10/1987EP0224902A1 Process for the preparation of D-threo-1(p-methylsulfonylphenyl)-2-dichloracetamido-propandiol-1,3-(Thiamphenicol)and use of suitable intermediate products
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
06/02/1987US4670192 Optically-active di-[3-chloro-2-oxy-propyltrimethylammonium]-tartrate
05/1987
05/26/1987US4668796 Racemates of optically active bicyclic imino-alpha-carboxylic esters
05/19/1987US4667054 Process for producing optically active valine
04/1987
04/28/1987US4661628 Process for the optical resolution of racemic mixtures of α-naphthyl-propionic acids
04/21/1987US4659838 Method of resolving bicyclic imino-α-carboxylic acid ester racemates
04/14/1987US4658043 Ethers of pantolactone
04/07/1987US4656303 Novel resolution method of racemic mixture
03/1987
03/25/1987EP0215010A1 Insecticidal composition comprising more than one active ingredients.
03/24/1987US4652672 Beta blockers
03/17/1987US4650897 Organic synthesis
03/03/1987US4647692 Racemization and resolution of α-amino acids
02/1987
02/10/1987US4642205 Diastereomer salts of phenylalanine and N-acyl derivatives thereof and process for the separation of optically active phenylalanine and N-acyl derivatives thereof
01/1987
01/21/1987EP0208948A2 A method for optical resolution of phenylacetic acid derivative
01/21/1987EP0208758A1 Pyrethroidal composition comprising more than one active ingredients.
01/17/1987CN85101840A Processes and intermediates for making 16-phenoxy-and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers
01/15/1987WO1987000165A1 Chiral two-phase system and method for resolution of racemic mixtures and separation of diastereomers
12/1986
12/31/1986CN86104832A Process for the preparation of certain pairs of enantiomers of alpha-cyano-3-phenoxy-4-fluorobenzyl permethrate
12/30/1986EP0206436A2 Enzymatic production of optical isomers of 2-halopropionic acids
12/30/1986EP0206283A2 Optically active pyridobenzoxazine derivatives
12/30/1986EP0206149A2 Process for the preparation of specific enantiomer pairs of permethrin alpha-cyano-3-phenoxy-4-fluorobenzyl ester
12/23/1986CA1215717A1 Process for converting a stereoisomeric ester into its diastereoisomer
12/17/1986EP0204911A2 A new process for the optical resolution of racemic mixtures of alpha-naphthylpropionic acids
12/10/1986EP0204481A2 Process for optically active threo-3-(3,4-methylenedioxyphenyl) serine
12/09/1986US4627919 Resolving agent
12/09/1986CA1215076A1 Resolution method of racemic mixture
11/1986
11/26/1986EP0202736A2 Synthesis of 3S, 4S-Boc-Statine
11/11/1986US4622419 Process for the optical resolution of racemic mixtures of α-naphthyl-propionic acids
11/11/1986US4622214 Method for the preparation of crystalline molecular sieve materials wherein the organic template is an enantiomer
11/05/1986EP0200145A2 Process for the preparation of optically active azole derivatives
11/04/1986US4621152 Process for the enantiomeric resolution of mixtures of D and L-6-methoxy-alpha-methyl-2-naphthaleneacetic acid and resolving agent for said process
11/04/1986US4621151 Optical resolution of DL-cysteine
10/1986
10/28/1986US4619984 Modified silica gel
10/28/1986US4619970 Chromatographic resoluing agent of silion gel bonded to optically active polymer
09/1986
09/24/1986CN85101426A Process for optically active di-(3-chloro-2-oxypropyl trimethyl ammoniuml tartrate
09/23/1986US4613688 Optical resolution process for DL-cysteine
09/23/1986US4613442 Of triphenylmethyl methacrylate, for optical resolution
09/16/1986US4612121 Separation material, methods of producing a separation material and use of orosomucoid, functional analogs thereto or derivatives or fragments thereof for separation purposes
09/09/1986US4610828 Resolved from dl-carnitine using dibenzoyl-l(+)tartaric acid; medicine
09/09/1986US4610827 Amino acid complex and a method for optical resolution of a DL-amino acid
09/02/1986US4609764 Chromatography, racemization, epimerization
08/1986
08/19/1986CA1210014A1 Diastereomers of 1-ethyl-2-aminomethyl pyrrolidine
08/05/1986US4604207 Packing materials for chromatographic use and a method for analysis of an enantiomer mixture using the same
08/05/1986CA1209161A1 Method for the resolution of racemic 2-cp- difluoromethoxyphenyl)-3-methylbutyric acid
07/1986
07/31/1986WO1986004216A1 Insecticidal composition comprising more than one active ingredients
07/31/1986WO1986004215A1 Pyrethroidal composition comprising more than one active ingredients
07/23/1986EP0188235A2 Production of optically pure organoboranes
07/22/1986US4601987 Lipase catalyed assymetric esterification
07/15/1986US4600785 Processes and intermediates for making 16-phenoxy and 16-substituted phenoxy-prostatrienoic acid derivatives
07/08/1986US4599444 Process for the separation of isomeric cyclopropane-carboxylic acids
07/02/1986EP0186133A2 Optical resolution of oxycyclopentenone
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