Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 303 - Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
Patents for C07C 303 - Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides (11,473)
01/1991
01/01/1991US4981617 Process for the preparation of reaction products of epoxidized ricinoleic acid glycerides with sulfur trioxide
12/1990
12/27/1990EP0403947A2 Process for the preparation of aromatic sulfonic acid chlorides
12/27/1990EP0403511A1 Hydrogenation of halonitroaromatic compounds.
12/26/1990CN1048040A Ethanolamine derivatives
12/26/1990CN1048031A Improved process for preparing paraffin-sulfonic acids
12/19/1990EP0402978A1 Improved process for preparing paraffin-sulfonic acids
12/18/1990US4978780 Preparation of ether sulfonates and polyglycol ether sulfonates, and products prepared by this method
12/17/1990CA2019071A1 Process for the preparation of aromatic sulfonyl chlorides
12/15/1990CA2019011A1 Process for preparing paraffin-sulfonic acids
12/13/1990WO1990015049A1 Fatty alkyl sulphates and fatty alkyl polyalkylene glycolether sulphates, process for preparing them and their use
12/13/1990WO1990015047A1 Therapeutically useful 2-aminotetralin derivatives
12/12/1990EP0402339A1 Improved process for the production of carbonate esters
12/12/1990EP0402051A2 Processes for the preparation of saturated alcohol derivatives and their use in detergent: plasticizer: and synthetic lubricant formulations
12/12/1990EP0402048A1 Improved process for preparing benzenesulfonate salts
12/12/1990EP0402047A1 Improved process for preparing phenyl esters of substituted acids
12/12/1990EP0401946A2 Allyl esters of substituted phenylacetic acid and their use as pesticides
12/12/1990EP0401642A1 Fat alkyl sulfates and alkyl-polyalkyleneglycol ether sulfates, process for their production and their use
12/12/1990CN1047668A Method of recovering epoxy chloropropane and toluene
12/11/1990CA1277678C Bechamp reduction of dns to das using h2so4 and trace of hoac
12/06/1990WO1990015050A1 Process for preparing tenside mixtures based on ether sulphonates and use of said tenside mixtures
12/06/1990CA2058761A1 Process for preparing tenside mixtures based on ether sulphonates and use of said tenside mixtures
12/06/1990CA2017875A1 Improved process for preparing phenyl esters of substituted acids
12/06/1990CA2017874A1 Mproved process for preparing benzenesulfonate salts
12/05/1990CA2018218A1 Process for the production of carbonate esters
12/04/1990CA1277326C Benzoic acid and benzoic acid ester derivatives having anti-inflammatory and analgesic activity
11/1990
11/28/1990CN1010583B Process for extracting paraffins from their mixtures with paraffinsulphonic acids
11/27/1990US4973686 Controlling reactivity of sulfur trioxide by adding an aliphatic ester
11/22/1990EP0398842A1 Hydrazide derivatives
11/22/1990DE3916360A1 4,4-di:amino-stilbene-2,2-di:sulphonic acid - by redn. of corresp. di:nitro cpd. in aq. medium presence of hydrogenation catalyst with forming acid or salt as reducing agent
11/21/1990CN1010477B Process for extracting paraffins from mixture of alkane and alkanesutphonic acid
11/16/1990CA2016731A1 Hydrazide derivatives
11/14/1990CN1046895A Dodecylbenzene sulfonic acid ammonium produced by cold direct ammoniation method
11/13/1990US4970339 By-product separation, solvent evaporation; ammoniation
11/13/1990US4970337 Reacting bis(trifluoromethyl)disulfone with chlorine and water in an acidic liquid phase
11/13/1990CA1276164C Urethanes which contain perfluoroalkyl groups, epichlorohydrin groups and dialcohol radicals, the preparation and use thereof
11/07/1990EP0396458A1 Process for the purification of sodium trifluoromethanesulfinate and -sulfonate
11/07/1990EP0396077A1 Phenylene diamines and a process for their preparation
11/06/1990US4968836 From a hydrocarbyloxy halogenated tetrahydrofuran
11/06/1990US4968835 Process for the preparation of aminoaryl-sulphonic acids
11/02/1990CA2015793A1 Process for the purificaiton of trifluoromethanesulfinate and sodium sulfonate
10/1990
10/31/1990EP0395105A2 Process for preparing perfluoroalkenyl sulfonyl fluorides
10/31/1990EP0395103A1 Process for preparing perfluoroalkenyl sulfonyl fluorides
10/31/1990EP0395102A2 Process for preparing perfluoroalkenyl sulfonyl fluorides
10/30/1990CA1275653C Preparation of sulphophenyl esters
10/28/1990CA2015633A1 Process for preparing perfluoroalkenyl-sulfonyl fluorides
10/28/1990CA2015523A1 Process for preparing perfluoroalkenyl-sulfonyl fluorides
10/24/1990EP0394191A1 Sulfenylated carbamic acid esters
10/24/1990EP0393782A2 Catecholamine esters
10/20/1990CA2014972A1 Catecholamine esters
10/17/1990CN1010016B Salts of alpha-sulfo fatty acid ester with detergent active
10/17/1990CN1010008B Process for extraction of paraffin from mixtures thereof with alkane-sulphonic acids
10/16/1990US4963587 Glycine derivative and pharmaceutical preparation thereof
10/16/1990US4963548 Fungicides
10/14/1990CA2014481A1 Sulfenylated carbamic esters
10/10/1990CN1009923B Process for removing paraffins from their mixture with paraffinsulphonic acid
10/09/1990US4962282 Direct fluorination of fluoro-beta-sultones in order to produce the corresponding fluorooxy-fluorosulfonyl-fluoro-compounds
10/09/1990CA1275113A1 Benzyl and trifluoromethyl sulphide preparation process
10/07/1990WO1990011999A1 Process for synthesis of sulfonylimidides
10/07/1990CA2030809A1 Sulfonylimides synthesis process
10/02/1990CA1274854A1 Process for the extraction of paraffins from mixtures thereof with alkane-sulphonic acids
10/02/1990CA1274845A1 Reducing water sensitivity of strong acids
09/1990
09/26/1990EP0389417A1 Process for the preparation of aminobenzene sulfonic acids
09/25/1990US4959501 Process for the preparation of 2-(2-chloroethoxy)-benzenesulfonamide
09/25/1990US4959491 Detergent grade olefins, alkylbenzenes and alkylbenzene sulfonates and processes for preparing
09/18/1990CA1274213A1 Process and apparatus for the phtochemical sulfochloration of gaseous alcanes
09/11/1990CA1273923A1 Process for the preparation of 6-methyl-3,4-dihydro-1, 2,3-oxathiazin-4-one 2,2-dioxide and its non-toxic salts, and the acetoacetamide-n-sulfonic acid (salts) which occur as intermediate(s) in this process
09/06/1990DE3906096A1 Process for the preparation of ether amine sulphates and their use as low-foam surfactants
09/05/1990EP0385874A1 Functionalisation at position (n+1) of aryl derivatives disubstituted at position n and (n+2)
09/04/1990US4954646 Sulfation, neutralization
09/04/1990US4954160 Herbicides
09/03/1990CA2011348A1 Process for functionalizing n and (n+2) disubstituted arylic derivatives in the (n+ 1) position
08/1990
08/29/1990EP0384747A1 Pharmaceutical or veterinary preparations of substituted hexenoic acid derivatives
08/29/1990EP0384279A1 Benzene sulfonamides and process for their preparation
08/29/1990EP0384261A1 Process for the preparation of fluorooxy-fluorosulfonyl compounds by direct fluorination of fluoro-beta-sultones
08/28/1990US4952725 Catalytic oxidation of 4-nitrotoluene-2-sulfonate
08/28/1990US4952722 Cyclohex-2-en-1-one derivatives; herbicides
08/28/1990CA1273353A1 Preparation of acyloxy benzene sulfonate
08/22/1990CN1044808A Method for bromination of aromatic and heterocyclic compounds containing acceptor groups
08/21/1990US4950793 Sulfonation of aromatic hydrocarbons; chloro-or fluoro-sulfonic acid with lewis acid catalyst
08/21/1990US4950440 Sulfating, reacting with fatty acid, extraction, and simultaneous neutralization and hydrolysis
08/14/1990US4948812 1-phenoxy-3-amino-2-propanols use thereof
08/14/1990US4948809 Sulphonylalkylamines, processes for the preparation thereof and pharmaceutical compositions containing them
08/14/1990US4948535 Process for the sulfation of partial esters of aliphatic polyhydric alcohols
08/08/1990EP0381623A1 Process for the production of substituted cyclopropanals
08/02/1990CA2009008A1 Process for the preparation of substituted cyclopropanecarbaldehydes
08/01/1990EP0380144A1 Process for producing optically active benzene-sulfonamide derivatives
07/1990
07/24/1990US4943656 Sulfonation of polyalkylaromatic compounds, separation into layered liquid phases
07/24/1990US4943590 Antidepressants, stereospecific synthesis
07/24/1990US4943393 Process for the manufacture of ester sulfonate pastes of low viscosity
07/18/1990EP0377977A1 Glycine derivatives and preparation thereof
07/18/1990EP0377916A1 Ethersulphates with low dioxane content
07/17/1990US4942251 Catalytic sulfonation in oleum, porous carrier added, treated with reducing agent to deposit metal on carrier
07/17/1990CA1271775A1 Isocyanate derivatives containing carbodiimide groups, a process for their production and their use as additives for aqueous solutions or dispersions of plastics
07/12/1990WO1990007589A1 Process for impregnating anodized aluminium surfaces
07/12/1990WO1990007479A1 Method of obtaining bromated aromatic and heterocyclic combinations containing acceptor groups
07/12/1990DE3900169A1 Verfahren zum impraegnieren anodisch erzeugter oberflaechen von aluminium A method of impregnating anodic surfaces of aluminum
07/11/1990EP0377552A1 Process for synthesizing N-chlorothio-sulfonamides
07/11/1990CN1043703A Process for preparing indan derivative
07/10/1990US4940814 Reaction of hexafluoropropene oxide with fluorinated carboxylic acid fluorides
07/10/1990US4940573 Cationic surface-active compounds
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