Patents
Patents for C07C 319 - Preparation of thiols, sulfides, hydropolysulfides or polysulfides (8,304)
09/1994
09/20/1994US5349105 Skin disorder
09/20/1994US5349091 Process for recycling cured polysulfide sealants
09/20/1994CA1332064C Synthesis of secondary mercaptans from linear olefins
09/15/1994WO1994020446A1 Trisubstituted phenyl derivatives as phosphodiesterase inhibitors and processes for their preparation
09/15/1994DE4307476A1 Sulphonated sulphur compounds
09/14/1994EP0614885A1 Process for the transfer of alkyl groups in dialkyl trisulfides and mercaptans
09/14/1994EP0614884A1 Process for the preparation of unsymmetrical alkyl trisulfides and products
09/14/1994EP0614871A1 Process for producing optically active beta-hydroxyketone
09/13/1994US5347042 Optically active sulphur-containing amino acid derivatives, their preparation, their polymerisation to give optically active polymers and the use thereof
09/13/1994US5347015 Chemisorbed thin films as protection for metals
09/13/1994US5346828 Stereoisomeric enrichment of 2-amino-3-hydroxy-3-phenylpropionic acids using d-threonine aldolase
09/10/1994CA2102580A1 Process for the transfer of alkyl groups in dialkyl trisulfides and mercaptans
09/10/1994CA2101315A1 Process for the preparation of unsymmetrical alkyl trisulfides and products
09/06/1994US5344992 Process for the preparation of linear 1,3-diketones
09/06/1994US5344986 Amino phenoxy compounds and process for their preparation
09/06/1994US5344971 Process for deodorizing a mercapto acid by extracting malodorous compound therefrom with a supercritical fluid
09/01/1994WO1994019316A1 New compounds
09/01/1994WO1994019315A1 New compounds
08/1994
08/31/1994EP0612315A1 Nitro compounds having vasodilator activity
08/30/1994US5342977 Aminosulfonic acid derivatives and processes for their preparation
08/30/1994CA1331762C Esters containing a dithioacetal group, their preparation and their use as stabilizers of organic matter
08/17/1994EP0466733B1 Preparation of substituted ethenes
08/16/1994US5338886 Process for preparation of aromatic thiols
08/16/1994US5338859 Process for the production of calcium salts of hydantoic acids
08/10/1994EP0609310A1 N-(mercaptoacyl)amino acids, methods of their preparation and therapeutic use, and pharmaceutical compositions containing them
08/03/1994EP0609031A1 Process for preparing benzothiazepine derivatives
08/03/1994EP0608446A1 Continuous process for the production of disulfides
07/1994
07/28/1994CA2114036A1 Process for preparing benzothiazepine derivatives
07/27/1994EP0607916A1 Process for producing alkoxylated thio-compounds
07/27/1994EP0518882B1 N-acyl-aminoalkyl-2-hydroxyethylsulphides and a method for preparing them
07/26/1994US5332835 Process for fluorinating 1-phenyl-2-amino-1,3-propanediol compounds and new oxazoline compounds useful in this process
07/21/1994WO1994015927A1 Catalytic oxidation process
07/21/1994CA2150388A1 Catalytic oxidation process
07/19/1994CA1330807C Tertiary mercaptan synthesis enhancement using isobutylane homopolymers
07/12/1994US5329045 Process for deodorising a mercapto acid by extracting malodorous compounds therefrom with carbon dioxide
07/12/1994CA1330662C Process for unsymmetrical dithioacetals and dithioketals
07/06/1994EP0604857A1 Process for preparing optically active 4-mercapto-2-pyrrolidone derivative and intermediate therefor
07/06/1994EP0425687B1 Clathrate compound of ring-substituted salicylic acid salt
07/05/1994US5326884 Process for optically active 3-(methane-sulfonyloxy)thiolane and analogs
06/1994
06/15/1994EP0601721A2 Process for preparing overbased phenates
06/15/1994EP0601195A1 Process for producing 2-hydroxy-4-methylthiobutanoic acid
06/15/1994CN1087896A Process for the preparation of cyclopentene, cyclopentane and cyclohexane derivatives
06/14/1994US5321163 Multi-purpose catalytic distillation column and eterification process using same
06/14/1994US5321046 Hypocholesterolemic unsymmetrical dithiol ketals
06/09/1994WO1994012450A1 Method of preparing sulfur-containing compounds
06/08/1994EP0600617A1 Process for the preparation of intermediates useful in the preparation of pyranyl cyanoguanidine derivatives
06/08/1994CA2109758A1 Overbased phenate process
06/07/1994US5319144 Process for productin of 4,4'-thiobis phenols
06/07/1994US5319136 Reacting thioglycolic acid and its isopropyl ester(impurity) with ammonium hydroxide at controlled ph yields pure odorless ammonium salt
06/01/1994EP0599688A1 Process for O-alkylation of phenolic compounds
05/1994
05/25/1994CN1024654C Alkylation of polycyclic aromatic compounds to alkylates enriched in para-substituted isomers
05/24/1994US5315009 Preparation of isothiazolinones from disulphides and disulphides from isothiazolinones
05/17/1994US5312993 Process for the manufacture of dimethyl disulphide
05/17/1994US5312992 Process for removing sulfur from organic sulfides
05/17/1994US5312980 Absorption on zeolites and elution
05/17/1994US5312963 Process for preparing substituted cyclobutanes
05/17/1994US5312960 Fungicidal 2-methoximinocarboxylic esters
05/17/1994CA2072763C Process for the preparation of disulfides from thiols
05/17/1994CA1329615C Process for the preparation of compounds with antiulcer action
05/11/1994EP0596358A1 0-Phenylenediamines containing fluoroakyl(ene) groups and their use as intermediates in the preparation of benzimidazoles
05/11/1994CA2109399A1 Process for the preparation of intermediates useful in the preparation of pyranyl cyanoguanidine derivatives
05/04/1994EP0594621A1 Process for enzymatically preparing enantiomer-free esters and alcohols
05/04/1994EP0594573A1 Preparation of propenoic acid derivatives
05/04/1994CN1086208A Multistage process for making methyl carbamates
05/03/1994CA1329219C Process for the manufacture of dialkyl disulfides and polysulfides
05/03/1994CA1329214C 2-hydroxy-3-(4-methoxyphenyl)-3-(2- aminophenylthio)propionic acid, 8'-phenylmenthyl ester, especially for diltiazem
04/1994
04/28/1994WO1994008957A1 Method for the continuous preparation of methionine or methionine derivatives
04/28/1994CA2146644A1 Method for the continuous preparation of methionine or methionine derivatives
04/26/1994US5306826 Mixing mixture of Schiff bases of amides or amides and aldehyde, solvent, optically active acid, water to form salt, separating diastereomers, converting salt to amide
04/21/1994DE4235295A1 Kontinuierlich durchführbares Verfahren zur Herstellung von Methionin oder Methioninderivaten Continuously performable process for the preparation of methionine or Methioninderivaten
04/20/1994EP0593314A1 Procedure to deodorise a mercapto acid and product thus obtained
04/20/1994EP0593313A1 Method of deodorising a mercapto acid by extraction of malodorous compounds and deodorised product thus obtained
04/19/1994US5304683 Using gamma-alumina catalyst in teh presence of an alkene; heating, pressurization
04/19/1994CA1328662C Stereoselective synthesis of leukotriene antagonists
04/14/1994WO1994007850A1 Process for the stereoselective synthesis of 3-substituted 2-sulphonyl methyl propionic acids and intermediate products
04/14/1994WO1994007841A1 Process for reducing carboxylic acids or carboxylic acid derivatives, and novel compounds
04/14/1994CA2146142A1 Process for the stereoselective synthesis of 3-substituted 2-sulfonylmethylpropionic acids, and intermediate products
04/13/1994EP0591584A1 N-Alkyl-3-phenyl-3-(2-halo-substituted phenoxy)Propylamines as norepinephrine uptake inhibitors
04/12/1994US5302755 Method for DMTDA production
04/12/1994US5302741 Optical resolution of threo-2-hydroxy-3-(2-aminophenylthio)-3-(4-methoxyphenyl)-propionic acid
04/12/1994CA1328464C Process for the preparation of phenolic thiocarboxylic acid esters
04/07/1994DE4233100A1 Verfahren zur stereoselektiven Synthese von 3-substituierten 2-Sulfonylmethylpropionsäuren sowie Zwischenprodukte Method for the stereoselective synthesis of 3-substituted 2-Sulfonylmethylpropionsäuren and intermediates
04/06/1994EP0590555A1 Process for the preparation of aromatic ureas, containing a thioether or a sulphonyl group
04/05/1994US5300672 For water systems, plant diseases
04/05/1994US5300654 Dehydrating beta-hydroxyketone in presence of acid catalyst
03/1994
03/31/1994DE4232505A1 Verfahren zur Reduktion von Carbonsäuren oder Carbonsäurederivaten sowie neue Verbindungen A process for the reduction of carboxylic acids or carboxylic acid derivatives and to novel compounds
03/30/1994CN1084511A Description process for producing 2-hydroxy-4-methylthiobutanoic acid
03/29/1994US5298630 Processes for producing 2-substituted benzo[B]thiophene
03/23/1994CN1084160A Process for the preparation of cyclopentene, cyclopentane and cyclohexane derivatives
03/22/1994US5296635 Preparation of bis(3-nitrophenoxy) compound
03/16/1994EP0586987A1 Improved method for the preparation of R/S-gamma-lipoic acid or R/S-alpha-lipoic acid
03/16/1994CN1024004C Fungicides
03/15/1994US5294743 Process for the transfer of alkyl groups in dialkyl trisulfides and mercaptans
03/10/1994DE4229914A1 Racemic alpha- and gamma-lipoic acid prepn. - from cyclohexanone and vinyl alkyl ether in good yield by economical multi-stage process
03/09/1994CA2105610A1 The preparation of r/s-y-lipoic acid or r/s-x-lipoic acid
03/08/1994US5292943 Method for the preparation of low odor 2,3-dimercaptosuccinic acid
03/08/1994US5292933 Process for the resolution of threo-3-[(2-aminophenyl)-thio]-2-hydroxy-3-(4-methoxy-phenyl)propionic acid
03/08/1994US5292894 Preparation of benzo[b]thiophenes
03/08/1994CA1327445C Process for preparing sulfur solvent compositions
03/02/1994EP0585157A1 Amphiphilic fluorinated polyglycerol sulphur compounds cosmetic or pharmaceutical compositions containing them, process for preparation and formed vesicles
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