Patents
Patents for C07B 45 - Formation or introduction of functional groups containing sulfur (608)
12/1994
12/21/1994EP0629188A1 Regioselective sulphonylation of substituted aromatic compounds.
12/07/1994CN1096024A Catalytic oxidation process
09/1994
09/15/1994WO1994020207A1 Exothermic process with porous means to control reaction rate and exothermic heat
09/15/1994CA2157408A1 Exothermic process with porous means to control reaction rate and exothermic heat
09/06/1994US5344939 Esterification
08/1994
08/24/1994CN1025735C Process for preparing isothiocyanato functionalized metal complexes
07/1994
07/21/1994WO1994015927A1 Catalytic oxidation process
07/21/1994CA2150388A1 Catalytic oxidation process
06/1994
06/09/1994WO1994012450A1 Method of preparing sulfur-containing compounds
05/1994
05/17/1994CA1329615C Process for the preparation of compounds with antiulcer action
03/1994
03/23/1994EP0587774A1 Sulfonation process for viscous sulfonic acid
03/03/1994WO1994004490A1 Process for preparation of sulphonates
02/1994
02/23/1994EP0583429A1 Highly reactive form of copper and reagents thereof
02/01/1994US5283337 Process for the preparation of perhaloalkylthioethers
01/1994
01/12/1994EP0299034B1 Process for the preparation of compounds with antiulcer action
12/1993
12/09/1993WO1993024263A1 Highly reactive zerovalent metals from metalcyanides adapted for preparation of organometallic compounds
11/1993
11/24/1993EP0570844A1 Multitube falling-film reactor
10/1993
10/14/1993DE4212086A1 Producing alkane sulphonate(s) in a continuous process - by nano-filtration of the lower phase followed by saponification, to increase yield and reduce the COD of waste water
09/1993
09/16/1993WO1993018000A1 Regioselective sulphonylation of substituted aromatic compounds
09/04/1993WO1993017992A1 Sulfonation process for viscous sulfonic acid
08/1993
08/03/1993US5233081 Method for sulfonation using porous absorber material
06/1993
06/29/1993CA1319698C2 3-alkoxy-4-thioacetoxy-2e-butenoic acid alkyl esters
05/1993
05/06/1993DE4135728A1 Sulphur tri:oxide prepn. used for sulphonation reactions - by reaction of sulphite with halogen in presence of water
03/1993
03/23/1993CA1314890C Process for the preparation of benzoin sulfonates
03/10/1993EP0530454A1 Process for the preparation of alkylphenyl alkyl ethers of alkylphenyl alkyl thioethers
02/1993
02/23/1993US5189165 Process for the preparation of 1,1-disubstituted cyclopropane derivatives
01/1993
01/27/1993EP0524813A1 Selective thioketalization process, process for preparing thioenol ethers from thioketals, and process for the preparation of thioketals
01/26/1993CA2074430A1 Selective thioketalization process, process for preparing thioenol ethers from thioketals, and process for the preparation of thioketals
12/1992
12/29/1992US5175302 Nucleophilic fluoroalkylation of aldehydes
12/02/1992EP0377634B1 Process for the preparation of aryl sulfides
11/1992
11/17/1992US5164527 Zeolite catalysts
11/12/1992WO1992019623A1 Highly reactive form of copper and reagents thereof
09/1992
09/30/1992EP0505582A1 Sulfonating agent and process
08/1992
08/04/1992US5136088 Sulfonation process for viscous sulfonic acid
06/1992
06/30/1992CA1304386C Process for the production of 4-alkoxy-2(5h) thiophenones
06/02/1992US5118813 Process for the preparation of compounds with antiulcer action
05/1992
05/26/1992US5117064 Selective
05/05/1992CA1300176C Process for the preparation of aryl sulfides
04/1992
04/30/1992WO1992006935A1 Sulfonating agent and process
04/30/1992DE4033720A1 Protecting hydroxy gps. in polyfunctional cpds. - using allyl:sulphonyl gp. as blocking gp.
03/1992
03/31/1992US5101068 Monofluoromethylation of organic compounds, reaction with amino acids
03/24/1992CA1297887C Sulfited fats
03/24/1992CA1297886C Process for the sulfation of partial esters of aliphatic polyhydric alcohols
01/1992
01/21/1992US5082945 Process for the preparation of perhaloalkylthioethers
01/15/1992EP0466319A1 Hydroxyalkylation of phenols or thiophenols with cyclic organic carbonates using triorganophosphine catalysts
11/1991
11/27/1991EP0458684A1 Reagent and process for the perfluoroalkylation of nucleophilic substrates by sodium perfluoroalkanesulfinates in an oxidising medium
11/26/1991US5068369 Enantiomorphs
11/06/1991EP0455332A2 Acylation or sulphonylation of aromatic compounds
11/05/1991US5062997 Of unsaturated fatty acids or esters
10/1991
10/22/1991US5059723 Efficiency; purity
09/1991
09/03/1991US5045159 Derivatives of compounds containing a carbonyl group conjugated to an aromatic moiety and electrophilic methods of fabrication thereof
08/1991
08/21/1991EP0442754A2 Reagents and methods for stereospecific fluoromethylation
07/1991
07/03/1991EP0435151A2 Process for the preparation of 1,1-disubstituted cyclopropane derivatives
06/1991
06/04/1991CA1284661C Reduction of organic sulfur compounds
05/1991
05/14/1991US5015775 Reaction of an alkylsulfonic acid with an aromatic compound and a phosphorous reagent
05/14/1991US5015770 Sulfiding an aromatic amine with a hydrocarbyl disulfide in the presence of iodine
04/1991
04/16/1991US5008432 Production of mercapto compounds
03/1991
03/20/1991CN1050021A Synthetic process of diterpenic lactone
02/1991
02/05/1991US4990676 Reacting single enantiomer of chiral complex with carbanion
02/05/1991US4990288 Transesterification of sulfonated fatty acid alkyl ester before salt formation
01/1991
01/23/1991EP0409003A2 Derivatives of compounds containing a carbonyl group conjugated to an aromatic moiety and electrophilic methods of fabrication thereof
12/1990
12/25/1990US4980510 Reacting a substituted halobenzene with sodium hydrosulfide or sodium sulfide and acidification
11/1990
11/27/1990US4973686 Controlling reactivity of sulfur trioxide by adding an aliphatic ester
11/13/1990CA1276173C Sulphur compound production
09/1990
09/05/1990EP0385874A1 Functionalisation at position (n+1) of aryl derivatives disubstituted at position n and (n+2)
09/03/1990CA2011348A1 Process for functionalizing n and (n+2) disubstituted arylic derivatives in the (n+ 1) position
08/1990
08/14/1990US4948535 Process for the sulfation of partial esters of aliphatic polyhydric alcohols
08/08/1990CN1044461A Process for preparing isothiocyanato functionalized metal complexes
07/1990
07/18/1990EP0377634A1 Process for the preparation of aryl sulfides.
07/18/1990EP0377625A1 Preparation of derivatives
07/12/1990WO1990007342A1 Process for preparing isothiocyanato functionalized metal complexes
07/04/1990CN1043499A Process for preparing perhaloalkylthioethers
06/1990
06/27/1990EP0374947A1 Process for preparing isothiocyanato functionalized metal complexes
06/20/1990EP0374061A1 Process for the preparation of perhalogen alkyl thio ethers
06/19/1990US4935514 Thiation process
06/05/1990US4931570 Process for the production of 4-alkoxy-2(5H) thiophenones
05/1990
05/02/1990EP0261668B1 Process for the preparation of 4-alkoxy-2(5h) thiophenones
03/1990
03/06/1990US4906765 Process for the production of 4-alkoxy-2(5H) thiophenones
03/06/1990US4906759 Process for the production of 4-alkoxy-2(5H) thiophenones
02/1990
02/27/1990US4903362 Sulfited fats as oiling agents for leather and skins
11/1989
11/21/1989CA1263123A1 CONTROL OF DISALT IN .alpha.-SULFOFATTY ACID ESTER SURFACTANTS
10/1989
10/18/1989EP0337063A1 Alkyl aryl sulfones and method of preparing the same
10/11/1989EP0336538A1 Process for preparing chiral sulphoxides
10/10/1989US4873351 Reacting antimony trioxide with organic mercaptan in the presence of a lower aliphatic carboxylic acid
09/1989
09/26/1989CA1261536A1 Aromatic polymers
09/06/1989EP0226635B1 Method for neutralization of organophilic acidic compounds
08/1989
08/22/1989US4859372 In presence of hydrogen halide
08/15/1989US4857645 Process for introducing a thiocarboxylic ester group at the orthoposition of phenols or phenylamines
06/1989
06/15/1989WO1989005291A1 Enantioselective preparation of substituted aminothiophenol derivatives
06/06/1989US4837364 Processes for preparing pentafluoroethoxy- and pentafluoroethylthiobenzene drivatives
06/06/1989US4837350 Process for the preparation of benzoin sulfonates
06/06/1989US4837327 Process for nucleophilic fluoroalkylation of aldehydes
05/1989
05/09/1989CA1253669A1 Generation of sulphur trioxide from oleum
04/1989
04/18/1989US4822918 Reduction of organic sulfur compounds
03/1989
03/09/1989WO1989001931A1 Preparation of derivatives
03/08/1989EP0305924A2 Process for the sulfonation and/or sulfatation of organic compounds with S03 in an organic reaction medium
02/1989
02/23/1989WO1989001463A1 Process for the preparation of aryl sulfides
02/15/1989CN1031083A Process for preparing compounds with antiulcer action
02/08/1989EP0302321A2 Process for the preparation of thiophenols, and these thiophenols
01/1989
01/24/1989US4800045 Oxidation and reaction with gtoup 1 metal or ammonium bisulfites or sulfites; low iodine number; diling leather and skins
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