Patents
Sitemap › C07 - Organic chemistry › C07B - General methods of organic chemistry; Apparatus therefor › C07B 31 - Reduction in general
Patents for C07B 31 - Reduction in general (2,354)
11/1990
11/27/1990US4973771 Phase transfer catalysts
11/27/1990US4973696 Stereoselective process for preparing optically active alpha, beta-disubstituted carbonyl compounds
11/27/1990US4973686 Controlling reactivity of sulfur trioxide by adding an aliphatic ester
11/27/1990CA1276932C Process for the preparation of hydrogen levomepromazine maleate
11/27/1990CA1276931C2 Process and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers
11/22/1990EP0398446A1 Catalyst for hydrogenation and/or dehydrogenation
11/20/1990CA1276641C Substituted p-hydroxyphenyl compounds
11/13/1990US4970313 Optically active 3-demethylmevalonic acid derivatives, and intermediates
11/13/1990CA1276177C2 Process for the optical resolution of racemic mixtures of -naphthyl-propionic acids
11/13/1990CA1276173C Sulphur compound production
11/13/1990CA1276144C Method for oxidation
10/1990
10/30/1990US4966995 Process for the preparation of chlorides of carboxylic acids
10/30/1990US4966694 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide
10/24/1990EP0393093A1 Process
10/24/1990EP0288764B1 Optically active alpha-amino aldehydes, processes for their preparation and their use in the stereoselective preparation of optically active beta-amino alcohols
10/24/1990EP0190322B1 Process for the production of amino compounds from hydroxyl compounds
10/10/1990EP0210896B1 Optically pure derivates of 4-amino-3-hydroxycarboxylic acids and process for stereospecific synthesis
10/03/1990CN1009802B Stabilized magnesia and its use in catalytic processes
10/02/1990US4960960 Hydrogenation process
09/1990
09/25/1990US4959339 Heat-resistant noble metal catalyst and method of producing the same
09/25/1990CA1274544A1 Process for the selective hydrogenation of unsaturated compounds
09/19/1990EP0223151B1 Process for the selective hydrogenation of unsaturated compounds
09/18/1990CA1274248A1 METHOD OF PREPARING .alpha.-ARYLALKANOIC ESTERS
09/11/1990US4956328 Catalyst for hydrogenation of nitriles, aromatic hydrocarbons, nitro compounds and/or olefins
09/11/1990US4956052 Extraction water and organic compound mixture
09/11/1990CA1273941A1 Process for the preparation of optically active azole derivatives
09/04/1990US4954644 Hydrogenation catalyst
09/04/1990US4954592 Hydrogenation catalysts
09/04/1990CA1273630A1 Deprotection of allylic esters and ethers
08/1990
08/29/1990CN1009362B Composition of matter and method of oxidative conversion of organic compounds therewith
08/28/1990US4952730 Formylation, reacting with a strong acid or an acid halide and hydrolysis
08/28/1990CA1273364A1 Process for dimerization of aromatic halide compounds
08/28/1990CA1273357A1 Substituted aminoxyethyl phosphonates
08/28/1990CA1273346A1 Optically pure 4-amino-3-hydroxycarboxylic acid derivatives and process for their stereospecific synthesis
08/22/1990CN1009273B Process for the preparation of certain pairs of enantiomers of 2-cyano-3-phenoxy-4-fluorobenzyl permethrate
08/21/1990US4950817 Process for the preparation of 4,4'-dihalobiphenyls
08/21/1990US4950813 Preparation of substituted benzotrichlorides
08/21/1990US4950418 Reagent for removing protective groups in peptide synthesis
08/14/1990US4948913 Renin inhibitors containing 5-amino-2,5-disubstituted-4-hydroxypentanoic acid residues
08/07/1990US4946999 Chemical intermediates, antibiotics
08/07/1990US4946821 Combining ammoniacal metal solution with aluminum compound aqueous solution, reducing the precipitates with hydrogen
08/07/1990CA1272489A1 Process for the condensation of carbonyl and aromatic compounds
07/1990
07/31/1990US4945181 Method for resolution of racemic thiamphenicol precursors and intermediates therefor
07/31/1990CA1272213A1 Process for inverting the configuration of optically active compounds, and optically active intermediates produced in this process
07/31/1990CA1272209A1 Dehalogenation process
07/24/1990US4943354 Phase separation within the distillation column
07/18/1990EP0377625A1 Preparation of derivatives
07/17/1990US4942225 Transfer to active methylene group an azo or diazo group
07/17/1990US4942220 Process for preparing poly-amide from nitrile and amine with catalytic complex
07/17/1990CA1271772A1 Oxidation of organic compounds using ceric ions in aqueous methanesulfonic acid
07/10/1990US4940808 Process for ozonization of unsaturated organic compounds
07/10/1990CA1271490A1 Oxidation of organic compounds using thallium ions
06/1990
06/26/1990US4937379 Carboxylic acid synthesis process
06/26/1990EP0297126A4 Phase transfer catalysis.
06/19/1990US4935532 Hemiacetals
06/13/1990CN1042897A Alkylation of polycyclic aromatic compounds to alkylates enriched in para-substituted isomers
06/12/1990US4933511 Organometallic catalysts
06/12/1990US4933510 Propanol derivatives
06/12/1990US4933482 Hydrogenation of beta-keto acid in presence of ruthenium phosphine complex
06/05/1990US4931184 Chromatographic separation
06/05/1990CA1269997A1 Racemization process
06/05/1990CA1269990A1 Thyronine derivatives
05/1990
05/29/1990US4929772 Process for preparing polyhalogenated carbinols
05/29/1990US4929771 Process for the preparation of alkyl-substituted phenols or naphthols
05/29/1990CA1269667A1 .alpha.-SUBSTITUTED 3,3,3-TRIFLUORO-2,2-DICHLORO-1- PROPANOLS AND THE PREPARATION THEREOF
05/22/1990CA1269398A1 Process for the preparation of unsaturated compounds
05/22/1990CA1269394A1 Ceric oxidant
05/22/1990CA1269392A1 Process for preparing amides from nitriles and amines
05/08/1990US4923999 Optically active borane complex and a method for producing an optically active alcohol derivative by the use thereof
05/08/1990CA1268761A1 Method of carrying out chemical dehydration reaction and an apparatus therefor
05/01/1990US4922009 Stereoconvergent process for preparing optically active carboxylic acids
05/01/1990CA1268596A1 Bisamide bisthiol compounds useful for making technetium radiodiagnostic renal agents
04/1990
04/17/1990US4918253 Process for the preparation of 1,2,5,6,9,10-hexabromocyclododecane
04/17/1990US4917817 Optical active compound, process for producing same and liquid crystal composition containing same
04/17/1990CA1267892A1 Processes and intermediates for making 16-phenoxy- and 16-substituted phenoxy-prostatrienoic acid derivatives and their stereoisomers
04/10/1990US4916252 Process for preparing optically active alcohol
04/10/1990US4916230 Process for preparing novel N-(acyloxy-alkoxy)carbonyl derivatives useful as bioreversible prodrug moieties for primary and secondary amine functions in drugs
04/03/1990US4914214 Condensing esterified 2-carboxyperhydroindole with specific isomer of n-(1-carbethoxybutyl)-alanine, deesterifying, forming salt
03/1990
03/27/1990US4912268 Diazotizing an aromatic amine in presence of hydrogen fluoride; thermally decomposition of aryldiazonium fluoride
03/27/1990US4912264 Liquid phase alkylation of a hydroxyl containing aromatic compound
03/21/1990CN1040578A Enantio-selective process for preparing derivatives of hemicaronic aldehyde of trans or cis-structure & intermediates obtained
03/20/1990CA1266950A1 Method and apparatus for multipolymer synthesis systems
03/14/1990CN1040364A Process for preparing di ( alkylsulfomethyl ) phenole
03/06/1990US4906780 Process for the production of optically active beta-methylcholine
03/06/1990CA1266487A1 Chiral cyanohydrination process
02/1990
02/27/1990US4904790 Optically active styrene compounds substituted by a pyridinyl group
02/27/1990US4904780 Process for the monoacylation of water-soluble organic amino compounds
02/26/1990EP0248879A4 Synthesis of aryloxypropanolamines and arylethanolamines.
02/20/1990US4902817 Process for the synthesis of alpha n alkylated amino acids and esters thereof, application to the synthesis of carboxyalkyl dipeptides
02/20/1990CA1266057A1 PROCESS FOR THE OPTICAL RESOLUTION OF RACEMIC MIXTURES OF .alpha.-NAPHTHYLPROPIONIC ACIDS
02/14/1990CN1006782B Oxidation method
02/14/1990CN1006765B Method of carrying out chemical dehydration reaction and apparatus therefor
02/13/1990US4900407 Method for deoxygenation of alcohols
02/06/1990US4898655 Reacting with bromine or mercapto compounds in presence of ultraviolet light
02/06/1990CA1265536A1 Production of optically pure organoboranes
01/1990
01/30/1990US4897198 Separation agent comprising 1,3-glucan
01/30/1990CA1265161A1 Hydrogenation process
01/30/1990CA1265130A1 Process of selectively blocking amino groups
01/23/1990US4895988 Process for the mutual condensation of aromatic and carbonylic compounds
01/23/1990US4895984 Acylation of aromatics
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