| Patents for C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups (17,242) |
|---|
| 08/11/1998 | US5792876 Reacting an aldehyde or ketone with an alcohol in the presence of a titanium derivative of acetylacetone or stannous chloride dihydrate, cerium chloride hhexahydrate or bismuth chloride; efficiency |
| 08/11/1998 | CA2080697C Process for preparation of resorcinol |
| 08/04/1998 | US5789627 Method for the purification of tertiary butyl alcohol and to its use in the manufacture of MTBE |
| 07/29/1998 | EP0854851A1 Process for conducting etherification reactions |
| 07/29/1998 | CN1189154A 4-aryl-1-phenylalkyl-1,2,3,6-Tetrahydropyridines having neurotrophic and neuroprotective activity |
| 07/29/1998 | CN1039314C Preparation method of biscfluoromethane |
| 07/28/1998 | US5786520 O-alkylation of phenolic compounds via rare earth orthophosphate catalysts |
| 07/28/1998 | US5786519 Reacting anisole with hydrogen peroxide in the presence of a solid catalyst containing an organotransition metal complex substituted with electron withdrawing groups |
| 07/28/1998 | US5786518 Process for the manufacture of a gamma-halotiglic aldehyde |
| 07/23/1998 | WO1998031652A1 Process for the synthesis of hexafluoroisopropyl ethers |
| 07/23/1998 | CA2277764A1 Process for the synthesis of hexafluoroisopropyl ethers |
| 07/22/1998 | CN1188468A Purification of fluorinated dimethyl ethers |
| 07/22/1998 | CN1188107A Process for synthesizing benzoic acids |
| 07/22/1998 | CN1188099A Process for preparation of acetic acid product comprising |
| 07/22/1998 | CN1039224C Process for producing dimethyl ether from semi-water gas or water gas |
| 07/21/1998 | US5783602 Leukotriene-B4 derivatives, process for their production and their use as pharmaceutical agents |
| 07/16/1998 | WO1998030529A2 Preparation of carboxylic compounds and their derivatives |
| 07/16/1998 | WO1998030528A2 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof |
| 07/16/1998 | CA2277085A1 Preparation of carboxylic compounds and their derivatives |
| 07/16/1998 | CA2276292A1 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof |
| 07/14/1998 | US5780689 Etherification of isobutene and methanol using zeolite type y with impregnated trifluoromethanesulfonic acid |
| 07/14/1998 | US5780688 Open pore support on which macroporous ion exchange resin is fixed |
| 07/14/1998 | US5780687 Process for preparing 3-oxyalkylpropan-1-ols |
| 07/08/1998 | CN1186799A Production of hydrofluorocarbons |
| 07/08/1998 | CN1186798A Chemical process |
| 07/07/1998 | US5777179 Reacting hexafluoropropylene epoxide with carbonyl fluoride and perfluoroacetyl fluoride |
| 07/07/1998 | US5777178 Process for the preparation of polyoxyalkylene ether surfactant compositions |
| 07/07/1998 | US5777174 Process for preparing perfluoropolyethers with bromo- or iodo-containing end groups |
| 07/07/1998 | US5776320 Process and apparatus for reactive distillation with a particular distribution of liquid and vapour phases |
| 07/01/1998 | EP0850907A2 Higher secondary alcohol alkoxylate compound composition, method for production thereof, and detergent and emulsifier using the composition |
| 07/01/1998 | EP0850906A1 Process and apparatus for the etherification of olefinic hydrocarbon feedstocks |
| 07/01/1998 | EP0850902A1 Process for reducing the level of trisubstituted phosphine, arsine and/or stibine oxide in a mixture |
| 07/01/1998 | CN1038927C Production of dimethyl ether |
| 06/30/1998 | US5773669 Dehydration reaction of hydroxy alkyl ethers with oxide catalyst |
| 06/30/1998 | US5773668 Method of making trichloromethoxybenzene |
| 06/30/1998 | US5773614 Oxidation with osmium tetroxide to give diol and treatment with orthoester |
| 06/25/1998 | WO1998027041A1 Method of preparing nonafluoroisobutyl methyl ether |
| 06/25/1998 | WO1998027040A1 Preparation of polyoxyalkylene ether surfactant compositions |
| 06/24/1998 | EP0849246A2 Derivatives of 4-vinyl-4'-alpha-hydroxyethyl-biphenyl |
| 06/24/1998 | CN1185462A Treatment of polyethers prior to hydrosilylation |
| 06/23/1998 | CA2222854A1 Triphenylphosphine oxide complex process |
| 06/18/1998 | WO1998025874A1 Polymerizable biaryls, method for the production and use thereof |
| 06/18/1998 | DE19651439A1 Polymerisierbare Biaryle, Verfahren zur Herstellung und deren Verwendung A polymerizable biaryl compounds, methods of preparation and their use |
| 06/17/1998 | EP0847378A1 Process for separating butanol and dibutyl ether by means of dual-pressure distillation |
| 06/17/1998 | CN1184800A Bolaform compounds containing glyerol heads, processes for their prepn. and uses thereof |
| 06/16/1998 | US5767325 Preparation of enol ethers |
| 06/16/1998 | US5766521 Process for obtaining cristallized pearls exhibiting the phenomenon of supercooling |
| 06/11/1998 | WO1998024747A1 A process for the preparation of nabumetone |
| 06/10/1998 | EP0846671A2 Production process for (poly) alkylene glycol monoalkyl ether |
| 06/10/1998 | EP0846093A1 Synthesis of glycol ethers |
| 06/10/1998 | CN1184461A Novel ether compound and process for producing the same |
| 06/10/1998 | CN1184095A Production process for (poly) alkylene glycol monoalkyl ether |
| 06/10/1998 | CN1038670C Cyclohexanone derivative, cold sensitive agent and cold sensitive composition containing same and preparation of said derivative and its intermediate |
| 06/09/1998 | US5763712 Process for the preparation and fractionation of a mixture of dimethyl ether and chloromethane with methanol as extractant |
| 06/09/1998 | US5763700 Insecticides |
| 06/09/1998 | US5763688 Method for producing an alcohol |
| 06/09/1998 | US5763685 Use of a second stage reactor in the manufacture and recovery of methyl tertiary butyl ether |
| 06/09/1998 | US5763684 Method of purifying fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether |
| 06/09/1998 | US5763683 2-methylbutoxy ethoxyethanol |
| 06/09/1998 | US5763560 Treating benzaldehyde derivative with zinc and active chloride in an organic solvent |
| 06/04/1998 | WO1998023569A1 Process for purifying perfluorovinyl ethers |
| 06/04/1998 | WO1998023566A1 Highly branched primary alcohol compositions, and biodegradable detergents made therefrom |
| 06/03/1998 | EP0845452A1 HOAC process III |
| 06/03/1998 | EP0845294A2 Catalyst for dimethyl ether, method of producing catalyst and method of producing dimethyl ether |
| 06/02/1998 | US5760266 Method for the cyclotrimerization of alkynes in aqueous solutions |
| 05/28/1998 | WO1998022435A1 Compounds useful for perhalogenoalkylation, reagent for implementing these compounds and synthesis method for obtaining these compounds |
| 05/28/1998 | WO1998022419A1 Method for preparing a 4-hydroxybenzaldehyde and derivatives |
| 05/28/1998 | WO1998022417A1 Process for the preparation of benzyl-ethers by use of phase transfer |
| 05/28/1998 | WO1998022416A1 Process for the preparation of benzyl-ethers |
| 05/28/1998 | CA2272384A1 Process for the preparation of benzyl-ethers |
| 05/27/1998 | CN1038504C Cyclopentane derivatives |
| 05/26/1998 | US5756863 Process for preparing optically active cyclohexanol derivatives |
| 05/26/1998 | US5756851 Debromination; separation; methylation; etherification; contacting 2-bromo-6-methoxynaphthalene with methyl vinyl ketone; hydrogenation |
| 05/26/1998 | US5756834 Process for preparing fluorinated aromatics |
| 05/26/1998 | US5756814 Vinyl compound, its synthetic intermediates and processes for producing the same |
| 05/20/1998 | EP0842964A1 Treatment of polyethers prior to hydrosilylation |
| 05/20/1998 | EP0842916A1 Bolaform compounds of glycerol, processes for their preparation and their uses |
| 05/20/1998 | EP0741681B1 Process for producing 3-aryl propines and novel 3-aryl propines |
| 05/20/1998 | CN1182414A Process for producing ether compounds |
| 05/19/1998 | US5753776 Liquid-phase fluorination |
| 05/19/1998 | US5753716 Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process |
| 05/19/1998 | CA2043455C Hydroxyalkylation of phenols or thiophenols with cyclic organic carbonates using triorganophosphine catalysts |
| 05/14/1998 | CA2217341A1 Bolaform compounds having glycerol ends, processes for their preparation and uses |
| 05/13/1998 | EP0841090A2 Catalyst and process for production of 2-buten-1-ol compounds |
| 05/13/1998 | EP0633873B1 Two stage production of ether from tertiary alcohol |
| 05/12/1998 | US5750807 Reaction of aldehyde with hydrogen fluoride for fluorination |
| 05/12/1998 | US5750800 Predistillation |
| 05/12/1998 | US5750799 Dimethyl ether production and recovery from methanol |
| 05/12/1998 | US5750798 Method for making ether from a paraffin feedstock |
| 05/12/1998 | US5750797 Process for the production of hydrofluoroethers |
| 05/12/1998 | US5750796 Method of producing an alkylene oxide adduct of a compound having one or more active hydrogen |
| 05/12/1998 | CA2218137A1 Catalyst and process for preparing 2-buten-1-ol compounds |
| 05/12/1998 | CA1339864C Process for preparing controlled molecular weight perfluoropolyethers having perfluoroalkyl or perfluorochloroalkyl end groups |
| 04/30/1998 | WO1998017616A1 Production of nabumetone or precursors thereof |
| 04/30/1998 | CA2265751A1 Production of nabumetone or precursors thereof |
| 04/29/1998 | EP0837848A1 4-aryl-1-phenylalkyl-1,2,3,6-tetrahydropyridines having neurotrophic and neuroprotective activity |
| 04/29/1998 | EP0665836B1 Bifunctional intermediates for use in the manufacture of liquid crystals |
| 04/29/1998 | CN1180064A Method for producing dimethy ether |
| 04/28/1998 | US5744652 Method for the manufacture of methyl tertiary butyl ether from tertiary butyl alcohol and methanol |
| 04/28/1998 | US5744645 Two-stage process for producing diisopropyl ether using catalytic distillation |