CAS: 111-43-3; N-Propyl Ether

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丙烷置于aluminum Oxide体系中,化学反应生成正丙醚
参考文献:Process For Producing Oxygenated Organic Compounds
标题:Process For Producing Oxygenated Organic Compounds

专利信息

专利号:WO-2025217205-A1
优先权日:2024-04-08
标 题:Synthesis of (-)-trans-δ9-tetrahydrocannabivarin (δ9-thcv) and analogs thereof
发明人：HAGHDOOST MEHDI; ROBERTS MATTHEW; THOMAS BRIAN; DICKINSON LUKE; NIKITIN EDWARD
权利人:NALU BIO INC
摘要:A method is provided for the synthesis of (-)-trans-Δ9-tetrahydrocannabivarin (Δ9-THCV) and analogs thereof such that in the reaction product, the molar ratio of the Δ9 isomer to incidentally formed Δ8 isomers is greater than 4:1. Synthesis is carried out by combining a selected cannabinoid reactant, e.g., cannabidivarin (CBDV) or an analog thereof, with an acid in a solvent for the cannabinoid reactant, wherein the acid comprises (i) a Lewis acid having an acid softness index value in the range of -10 ΔG0 f, M n+ to ‑150 ΔG0 f, M n+, (ii) a Brønsted acid having a pKa in the range of -4.0 to +4.0, or (iii) a combination of (i) and (ii), under reaction conditions comprising a reaction temperature in the range of ‑0 °C to 25 °C and a reaction time in the range of 1 hour to 24 hours. The reaction is thereafter quenched with base and the solvent removed, wherein the crude reaction product so provided may be purified, e.g., chromatographically purified. Also provided is a method for synthesizing Δ9-THCV that further includes synthesis of the cannabinoid reactant. The invention additionally provides novel cannabinoid compositions that may be synthesized using the aforementioned methodology.

专利号:US-2005252762-A1
优先权日:2002-07-23
标 题:Method for the continuous purification by distillation of methanol, used as a solvent in the synthesis of propylene oxide without coupling products, with the simultaneous isolation of the methoxy propanols
发明人：BASSLER PETER; GOBBEL HANS-GEORG; TELES JOAQUIM H; RUDOLF PETER
权利人:BASF AG
摘要:Continuously operated process for the purification by distillation of the methanol used as solvent in the synthesis of propylene oxide by reaction of a hydroperoxide with propylene, with the methoxypropanols, as azcotrope with water, and the low boilers and high boilers simultaneously being separated off, wherein the solvent mixture obtained in the synthesis is fractionated in a dividing wall column.

专利号:US-4347379-A
优先权日:1980-03-10
标 题:Synthesis of alpha-alkoxycarboxylic acids
发明人：LAI JOHN T
权利人:GOODRICH CO B F
摘要:Numerous alpha-carboxylic acids are prepared in a liquid medium by the reaction of an organic compound having at least one reactive hydroxyl or thiol group, with a monoketone, and a haloform, in the presence of a phase transfer catalyst and an alkali metal hydroxide. The term 'alpha-alkoxycarboxylic acids' includes alpha-phenoxycarboxylic acids, alpha-thioalkoxycarboxylic acids and alpha-thiophenoxycarboxylic acids. Specific substituents on the beta carbon atom of an alpha-alkoxycarboxylic (or '2-alkoxycarboxylic') acid reaction product formed in this novel synthesis, are introduced by appropriate choice of the ketone reactant; alkoxy and phenoxy substituents on the alpha carbon atom of a 2-alkoxycarboxylic acid are introduced by appropriate choice of the organic compound having a hydroxyl or thiol group. De-alkoxylation of the 2-alkoxycarboxylic acid yields alpha-beta monoolefinically unsaturated carboxylic acids which are necessarily alpha substituted, and may also be beta-substituted. It is now possible to produce, simply and conveniently, numerous substituted alpha-beta monolefinically unsaturated carboxylic acids with a variety of substituents on the alpha carbon atom, and, optionally on the beta carbon atom of these substituted carboxylic acids. Esters may also be conventionally derived from both the 2-alkoxycarboxylic acids, and the unsaturated carboxylic acids. During the phase transfer catalyzed synthesis of this invention, an intermediate acyl halide derivative is formed prior to the formation of the 2-alkoxycarboxylic acid reaction product. The formation of the acyl halide derivative allows the subsequent direct formation, in a modification of the same reaction, of 2-alkoxycarboxylic acid amides (or '2-alkoxycarbamides'), simply by adding a primary or secondary amine to the reaction mass. By dealkoxylation of the 2-alkoxycarbamides, specific, necessarily alpha-substituted and optionally beta-substituted acrylamides are synthesized which previously could be prepared, if at all, only with difficulty.

专利号:US-8536375-B2
优先权日:2008-12-22
标题:Synthesis of obtaining modified polyethylene glycol intermediates
发明人：ENGELL TORGRIM
权利人:ENGELL TORGRIM; GE HEALTHCARE LTD
摘要:The present invention provides novel and more efficient synthesis's for obtaining an intermediate in the synthesis of obtaining a protecting group aminoxy PEG linker.

专利号:US-4794199-A
优先权日:1984-07-05
标题:Process for synthesis of primary amines from olefins, syngas and ammonia
发明人：LIN JIANG-JEN; KNIFTON JOHN F
权利人:TEXACO INC
摘要:This invention concerns the synthesis of primary amines from olefins, synthesis gas and ammonia via an amination process in the presence of a cobalt catalyst, an ether solvent and a tertiary group VB donor ligand.

专利号:US-5359016-A
优先权日:1993-03-29
标 题 :Process for the synthesis of styrene-isoprene rubber
发明人：HSU WEN-LIANG; HALASA ADEL F; MATRANA BARRY A
权利人:GOODYEAR TIRE & RUBBER
摘要:The subject invention relates to a technique for synthesizing rubbery copolymers of styrene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire tread rubber compounds. By utilizing these styrene-isoprene rubbers in tire treads, tires having improved wet skid resistance can be built without sacrificing rolling resistance or tread wear characteristics. This invention more specifically discloses a process for the synthesis of styrene-isoprene rubbers which comprises copolymerizing isoprene monomer and styrene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) an alkyl tetrahydrofurfuryl ether modifier, wherein the molar ratio of the modifier to the lithitium initiator is within the range of 2:1 to 40:1. The subject invention further discloses a process for the synthesis of styrene-isoprene rubbers which comprises copolymerizing isoprene monomer and styrene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) 2,2-ditetrahydrofurylpropane as a modifier, wherein the molar ratio of the modifier to the lithium initiator is within the range of 1:1 to 40:1.