Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups
Patents for C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups (17,242)
10/1990
10/18/1990CA2014273A1 Preparation of a difluorohalomethoxybenzene
10/17/1990EP0392258A2 Aromatic aldehydes, their derivatives and their use as ingredients in perfumes, herbicides and fungicides
10/16/1990US4963568 Treatment of parkinson*s disease, cardiovascular disorders
10/16/1990US4963535 Nonirritant cosmetic compositions containing a foaming surfactant and a nonionic surfactant containing two fatty chains
10/10/1990EP0391004A1 Heat-sensitive recording material
10/09/1990US4962281 Synthesis of stereoregular poly(propylene oxide)
10/09/1990US4962253 Vinylation of aromatics catalyzed by cyclopentadienyl, indenyl, or fluorenyl rhodium complexes, and novel indenyl and fluorenyl rhodium complexes
10/09/1990US4962239 Olefin is etherified with alcohol using zeolite catalyst
10/09/1990US4962238 Removal of glycols from a polyalkylene glycol dialkyl ether solution
10/09/1990US4962237 Catalytic process for the preparation of polyols
10/09/1990US4961855 Dehydration of organic oxygenates
10/09/1990CA1275105A1 Method of making organic solvent soluble zinc alkoxy alkoxides
10/04/1990WO1990011272A1 New leucotriene b4 derivatives, a method of preparing them, and their use as drugs
10/03/1990EP0390596A2 Combined etherification and alkylation process
10/03/1990EP0389631A1 Process for preparing dibenzocyclooctadiene type lignan
10/02/1990US4960954 Eliminating alcohol from acetal or ketal using phosphate or zeolite catalyst
10/02/1990US4960953 Process for preparing polyglycerols
10/02/1990US4960952 Alkoxylation process catalyzed by lanthanum silicates and metasilicates
10/02/1990US4960519 Membrane process for separation of organic liquids
10/02/1990CA1274851A1 4-alkylphenyl-2-alkoxyethyl ethers and fragrance compositions containing same
09/1990
09/29/1990CA2013289A1 Purified hydroxy-functional polyether compounds
09/27/1990DE3909128A1 Diskontinuierliches verfahren zum fuehren einer heterogen katalysierten reaktion und anlage zum heterogen katalysierten herstellen von produkten Batch process to lead a heterogeneously catalyzed reaction system and connect to the heterogeneously catalyzed by products
09/26/1990EP0389244A1 Process for synthesis of FK-506 C10-C18 intermediates
09/25/1990US4959448 Liquid crystalline side-chain polyesters prepared by polycondensation reactions
09/25/1990US4959391 Lipoxygenase inhibitors, leukotriene diseases
09/25/1990CA1274540A1 Functionalized perfluoropolyethers and process for the preparation thereof
09/24/1990WO1990011267A1 Novel integrated separation method for di-isopropyl ether and methyl tertiary alkyl ether processes
09/24/1990CA2027574A1 Integrated separation method for di-isopropyl ether and methyl tertiary alkyl ether processes
09/23/1990CA2012885A1 Process for synthesis of fk-506 c -c intermediates
09/21/1990WO1990011268A1 Process for the production of tertiary alkyl ethers and tertiary alkyl alcohols
09/21/1990WO1990011114A1 Discontinuous process for conducting a heterogeneously catalysed reaction and installation for heterogeneously catalysed manufacture of products
09/21/1990CA2050495A1 Discontinuous process for conducting a heterogeneously catalysed reaction and installation for heterogeneously catalysed manufacture of products
09/21/1990CA2028135A1 Process for the production of tertiary alkyl ethers and tertiary alkyl alcohols
09/20/1990DE3925437C1 Bi:aryl cpds. prepn. - by coupling two halo-aromatic cpds.
09/19/1990EP0388322A1 Preparation of 4-substituted aryl olefins
09/19/1990EP0388114A2 Process for production of 1,2,2,2,- Tetrafluoro-ethyl difluoromethyl ether
09/19/1990EP0387688A2 Method of producing asymmetrical glycol ethers with a terminal isolated double bond
09/18/1990US4957709 Reactor system for olefin conversion and etherification
09/17/1990CA2012225A1 Process for the production of asymmetrical terminally singly unsaturated glycolethers
09/11/1990US4956442 Process for preparing poly (vinylbenzyl ethers) of polyphenols
09/11/1990US4956341 3-tert-butyl-40-methoxycyclohexylmethanol, its preparation and its use as a scent
09/11/1990CA1273959A1 Conjugated alkadiene telomerization to organo- oxyalkadienes
09/11/1990CA1273956A1 Substituted ¬4.2.0| bicyclooctane derivatives with valuable therapeutic properties
09/07/1990WO1990009981A1 Preparation of optically active glycerol derivatives
09/07/1990WO1990009979A1 Methods for the preparation of brominated intermediates
09/06/1990DE3906434A1 Process for an additionary reaction of a 1-olefin and a 1,3-diene
09/05/1990EP0385882A1 Method for the hydroxylation of phenols and phenol ethers
09/05/1990CN1045094A Methods for preparation of brominated intermediates
09/05/1990CN1045093A Process for preparing polyoxyalkylene with narrow distribution of molecular weight
09/04/1990US4954660 Converted to secondary alcohols by treatment with methanol and a tertiary alcohol using an acidic catalyst
08/1990
08/31/1990CA2007932A1 Process for hydroxylating phenols and phenol ethers
08/29/1990EP0384043A2 Methods for the preparation of brominated intermediates
08/29/1990CN1044951A Perfluoropolyethers having antirust properties, useful as components or additives for lubricating oils and greases
08/28/1990WO1990010003A1 PREPARATION OF 5,6,7-TRINOR-4,8-INTER-m-PHENYLENE PGI2 DERIVATIVES
08/28/1990WO1990009973A1 Preparation of 4-substituted aryl olefins
08/28/1990US4952736 Reacting alkyl phenol, alcohol, and aldehyde in presence of tertiary amine catalyst
08/28/1990US4952716 Chemical intermediate for zeaxanthin and its derivatives
08/28/1990US4952710 Cyclopenteneheptenoic acid derivatives and method of preparation thereof
08/28/1990CA2046643A1 Preparation of 4-substituted aryl olefins
08/28/1990CA1273367A1 Hydroformylation of olefins
08/28/1990CA1273316A1 Process for neutralizing perfluoropolyethers
08/22/1990EP0382956A1 Process for direct etherification of a dehydrogenation zone effluent stream
08/21/1990USRE33307 Cyclic hydroxy compounds
08/21/1990US4950817 Process for the preparation of 4,4'-dihalobiphenyls
08/21/1990US4950813 Preparation of substituted benzotrichlorides
08/21/1990US4950809 Process for preparing hydroxylated aromatic derivatives by the Baeyer-Villiger reaction
08/21/1990US4950803 Etherification process
08/21/1990US4950802 Reacting a phenol, a halogenated hydrocarbon or ether and an antimony pentahalide
08/21/1990US4950674 Arylalkylheterocyclic amines,N-substituted by aryloxyalkyl group in a method for allergy treatment
08/21/1990CA1273026A1 Vinylbenzyl ethers of polyhydric halogenated phenolic compounds
08/16/1990EP0382224A2 Perfluoropolyethers having antirust properties
08/16/1990EP0382050A1 Process for the preparation of alkanols
08/14/1990US4948781 Novel odorant and/or flavoring substances
08/14/1990US4948780 Alcohols and ethers having cyclododecyl and cyclododecenyl groups, process for their preparation and scents containing same
08/14/1990CA1272739A1 Perfluorination of ethers
08/14/1990CA1272734A1 Styryl terminated macromolecular monomers of polyethers
08/14/1990CA1272731A1 Anthracene derivatives
08/14/1990CA1272723A1 Process for the preparation of new phenol derivatives
08/09/1990WO1990009364A1 Vinyloxy hydroxyalkylcycloalkane and preparation therefor
08/09/1990WO1990008758A1 Catalyst induced yield enhancement of reversible chemical processes
08/09/1990DE3051193C2 Purification of crude deca:bromo-di:phenyl ether
08/09/1990CA2045645A1 Vinyloxy hydroxyalkylcycloalkane and preparation therefor
08/08/1990EP0381623A1 Process for the production of substituted cyclopropanals
08/08/1990EP0381481A1 A process for producing alkenyl ethers
08/08/1990EP0381086A1 Process for the purification and stabilisation of perfluoropolyethers
08/08/1990EP0380578A1 A process for the preparation of 1,4-disubstituted 2-butenes.
08/08/1990EP0290319B1 1-Fluoro-1-halogeno-dioxa-3,6-bicyclo[4.1.0]heptane, preparation process and use
08/07/1990US4947006 Process for preparing fluorinated conjugated olefinic products and new products thus obtained
08/07/1990US4947005 Hydroformylation
08/07/1990US4946984 Condensation reaction of alkylene oxides and organic compounds having at least one active hydrogen
08/07/1990US4946936 Fluorinated polymers and copolymers containing perfluoropolyethers blocks
08/07/1990US4946865 Dipropargyloxybenzene compounds and their production
08/02/1990CA2009008A1 Process for the preparation of substituted cyclopropanecarbaldehydes
08/01/1990EP0379981A1 Acetales of oxo-tetralines and of oxo-indanes
08/01/1990EP0278211B1 Process for the manufacture of p-substituted o-benzylphenols
08/01/1990EP0257049B1 Chiral compounds
08/01/1990EP0256097B1 Vinyl compounds and liquid crystal phase
07/1990
07/31/1990US4945100 Process for the preparation of 1-triazolylethyl ether derivatives
07/31/1990CA2008857A1 Process for the purification and stabilization of perfluoropolyethers
07/26/1990WO1990007980A1 Alkoxylation catalyst and a method of producing an alkylene oxide adduct
1 ... 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 ... 173