Patents
Patents for C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups (17,242)
02/1982
02/16/1982US4315994 Preparation of glycols and ethers
02/16/1982US4315993 Preparation of ethylene glycol
02/10/1982EP0045618A2 Method for promoting the activity of a catalyst in the production of esters by the reaction of an olefin with a carboxylic acid
02/10/1982EP0045431A1 Process for the side-chain bromination of toluenes and mixtures of toluenes diversly highly brominated in the side chain
02/03/1982EP0045118A2 Intermediates for the synthesis of bicyclo (2,2,1) heptanes and bicyclo (2,2,1) hept-2Z-enes
02/03/1982EP0045100A1 Process for the transformation of an aldehyde into alkene, in particular of furfural into furfurylidenes
02/02/1982US4314087 Hydrogenation of hexafluoroacetone
02/02/1982US4314086 From aliphatic halide with phenolate or naphtholate in presence oftertiary amine sequestering agent
02/02/1982US4314072 2-[2-(2,2-Dihalovinyl)-3,3-dimethylcyclopropyl]ethylidene diacetates
02/02/1982US4314011 Color photographic material
01/1982
01/27/1982EP0044650A1 Aldehyde adducts and a process for separating aldehydes involving them
01/27/1982EP0044647A2 Synthesis of a pyridine-1-oxide herbicide and intermediates therefor
01/26/1982US4312631 Surface-active compounds based on natural rosin acids
01/26/1982CA1117122A1 Herbicidal compositions
01/20/1982EP0044260A2 Process for the preparation of polyphenols optionally substituted by an aldehyde group
01/20/1982EP0044002A1 Process for preparing 3-bromo-4-fluorobenzaldehyde (-acetals),3-bromo- 4-fluoro-benzoic acid nitrile and its preparation
01/20/1982EP0043986A2 Process for preparing alkyl-tert.alkyl ethers
01/20/1982EP0043963A1 Improved process for ethoxylation of broad-range primary alcohols
01/19/1982US4311862 Etherification of conjugated diene with alcohol
01/19/1982US4311861 Norbornyl ethers
01/19/1982US4311617 Perfumery compositions
01/19/1982CA1116641A1 Deuterated isoflurane
01/19/1982CA1116619A1 Fluorine-substituted phenoxybenzyloxycarbonyl derivatives and their use as insecticides and acaricides
01/13/1982EP0043478A1 Process for recovering the products of the etherification reaction of iso-olefines and methanol
01/13/1982EP0043435A1 Intermediate products occurring in anthracycline synthesis
01/13/1982EP0043420A1 Method for the preparation of ethoxylated derivatives blocked by a methyl group
01/12/1982US4310710 Process for manufacturing and recovering methyl tert.butyl ether
01/12/1982US4310709 Manufacture of but-2-en-1-ol compounds by isomerizing the corresponding but-3-en-1-ol compounds
01/12/1982US4310708 Phosphonium catalysts for hydroxyalkylation of phenols or thiophenols
01/12/1982US4310707 Sodium stannate catalyst for hydroxyalkylation of phenols or thiophenols
01/12/1982US4310706 Imidazole catalysts for hydroxyalkylation of phenols or thiophenols
01/12/1982US4310702 Selective monochlorination of ketones and aromatic alcohols
01/12/1982US4310680 Metal or metal compound catalyst
01/12/1982US4310669 Intermediates to 1,9-dihydroxyoctahydrophenanthrenes
01/12/1982US4310668 Intermediates to 1,9-dihydroxyoctahydrophenanthrenes
01/12/1982US4310540 Pyrethroid-like compounds
01/12/1982US4310529 Analgesics
01/07/1982WO1982000030A1 Ambrinol and its homologues
01/06/1982EP0043150A1 Pharmaceutical 2,3 -bis-hydroxybenzyl butane derivatives
01/05/1982CA1115737A1 Process for obtaining isobutene from c.sub.4-hydrocarbon mixtures containing isobutene
01/05/1982CA1115708A1 Substituted oxy-cyclohexylacetic acid derivatives
12/1981
12/30/1981EP0042412A1 Method of synthesizing fluoromethylhexafluoroisopropyl ether.
12/30/1981EP0042408A1 Methods of synthesizing hexafluoroisopropanol from impure mixtures and synthesis of a fluoromethyl ether therefrom.
12/30/1981EP0007347B1 Alkylenglycol compounds for lowering the lipid content and processes for the preparation thereof
12/29/1981US4308403 From hydrogen, carbon monoxide, aldehyde, alcohol; cobalt coordination catalyst
12/29/1981US4308402 Process for methyl-capped alkoxylates
12/29/1981US4308159 Use of norbornyl ethers in augmenting or enhancing the aroma of fabric softener articles
12/29/1981CA1115271A1 Mercapto substituted-2,3,4,5-tetrahydro-1h-3- benzazepines
12/22/1981US4307254 Catalytic distillation process
12/22/1981US4307253 Process for the preparation of alkyl aryl ethers
12/22/1981US4307252 2-Propyl-pent-4-en-1-al
12/22/1981US4307111 1-Hydrocarbyloxyphenyl-1,2-diphenylalkene derivatives
12/22/1981US4306943 Purification of polyether-polyol
12/22/1981CA1114830A1 Polyene compounds
12/16/1981EP0041739A2 Preparation of fluorinated acid fluorides; preparation of acids, amides or esters derived therefrom, copolymerization of fluorinated vinyl ethers
12/16/1981EP0041738A1 Preparation of vinyl ethers
12/16/1981EP0041737A1 Process to produce novel fluorocarbon vinyl ethers and resulting polymers
12/16/1981EP0041736A1 Fluorocarbon ethers having substituted halogen site(s) and process to prepare
12/15/1981US4306106 Conversion of polar compounds using a ZSM-5 zeolite catalyst
12/15/1981US4306097 3-[2-Hydroxy-4-(substituted)phenyl]-cycloalkanol analgesic agents
12/15/1981US4306096 Perfumes, insecticides
12/15/1981US4306093 Strontium catalyzed alkoxylations
12/09/1981EP0041441A1 Process for the meta-hydroxylation of alkyl phenols and their ethers in super acids
12/09/1981EP0041440A1 Isomerisation of ortho- and para-homophenols or their ethers to the corresponding metabromophenols or ethers
12/09/1981EP0041131A2 Preparation of fluoro-substituted benzodioxoles and benzodioxanes
12/08/1981US4304938 M-phenoxybenzaldehyde oxime, chlorinating benzaldehyde, 2-/m-phenoxyphenyl/-1,3-dioxolane
12/08/1981US4304785 Dilignols and dilignol-type compounds
12/08/1981CA1113968A1 Process for the preparation of an aromatic hydrocarbon mixture
12/02/1981EP0041043A1 Process for the preparation of derivatives of alkenyl benzene or alkenyl naphthalene
12/02/1981EP0041021A2 Cyclopropane carboxylic acid derivatives, their preparation, their use against parasites in plants and animals, their compositions and their intermediates
12/01/1981US4303639 1,2-Alkanediol derivatives in cosmetic compositions as an excipient therefor
12/01/1981US4303544 Dishwashing
12/01/1981CA1113477A1 Substituted phenoxybenzyloxycarbonyl derivatives and their use as insecticides and acaricides
12/01/1981CA1113463A1 3-(2-hydroxy-4-(substituted)phenyl) azacycloalkanes and derivatives thereof as analgesic agents and intermediates therefor
11/1981
11/25/1981EP0040400A1 Process for preparing the mono-methallyl-ether of pyrocatechin
11/24/1981US4302614 2,2-Bis[4-(2,3-dibromopropoxy)-3,5-dibromophenyl]-propane process
11/24/1981US4302613 Strontium- or barium-based catalyst
11/24/1981US4302607 Cyclopentadecanones
11/24/1981US4302398 Naphthacene derivatives
11/24/1981US4302356 Using an ion exchange resin distillation column
11/24/1981US4302349 Alcohol- and oxide-modified ethylene glycol polymers; detergents; automatic dishwashers
11/24/1981US4302306 Bromination of side chain of m-phenoxytoluene
11/24/1981US4302298 Recycling part of hydrocarbon cut
11/24/1981CA1113125A1 Ethynylbenzenes
11/18/1981EP0039890A1 Method for the preparation of hydroquinone mono-phenyl ethers
11/18/1981EP0039859A2 Process for preparing polyglycol ether coformals and polyglycol ether coformals
11/18/1981EP0039830A1 Process for the preparation of optically active compounds and their use in the preparation of vitamin E
11/17/1981US4301308 Flowing gaseous methanol and phenol through a fluidized bed of gamma-alumina
11/17/1981US4301307 Process for the hydroxylation of aromatic compounds
11/17/1981US4301088 Method of preparing benzyl alcohols by decarbonylation of formic acid esters
11/17/1981US4301083 Preparation of etherified polyoxyalkylene derivatives
11/17/1981CA1112658A1 CYCLISATION SUBSTRATES CONVERTIBLE TO 7-.alpha.- SUBSTITUTED 19-NORSTEROID DERIVATIVES
11/11/1981EP0039484A1 Process for the production of monoethers of hydroquinone and quinol ketales as intermediates thereof
11/10/1981US4299999 Process for the preparation and isolation of methyl-tert-butyl ether
11/10/1981US4299998 Preparation of ethers
11/10/1981US4299997 By-product inhibition by adding ethylene glycol mono-tert-butyl ether and ethylene glycol di-tert-butyl ether
11/10/1981US4299996 Using an ion exchange resin as catalyst
11/10/1981US4299995 Fluorinated polyenes
11/10/1981CA1112252A1 Intermediate in the preparation of cyclopropylcarboxylate esters and process for its manufacture
11/04/1981EP0039232A1 Substituted tricyclodecane derivatives, processes for preparing such derivatives, processes for using such derivatives and compositions using such derivatives