2886-89-7Relevant academic research and scientific papers
METHOD FOR PRODUCING EPOXY COMPOUND
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Paragraph 0082-0085; 0092-0094, (2021/11/05)
The invention provides a method for producing an epoxy compound by hydrogen peroxide using an organic compound having a carbon-carbon double bond as a raw material, wherein a by-product is suppressed from being generated and the epoxy compound is produced in a high yield. In particular, the invention provides a method for producing an epoxy compound involving oxidizing a carbon-carbon double bond in an organic compound with hydrogen peroxide in the presence of a catalyst, wherein the catalyst comprises a tungsten compound; a phosphoric acid, a phosphonic acid or salts thereof; and an onium salt having an alkyl sulfate ion represented by formula (I) as an anion: wherein R1 is a linear or branched aliphatic hydrocarbon group having 1 to 18 carbons, which may be substituted with 1 to 3 phenyl groups.
Safe, environment-friendly and controllable synthetic process of di-epoxide
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Paragraph 0220-0236, (2019/10/01)
The invention relates to the field of synthesis of epoxide, and more specifically, relates to a safe, environment-friendly and controllable synthetic process of di-epoxide. The synthetic process of the di-epoxide at least comprises the following steps: mixing diolefin, carboxylic acids, basic salt and solvent, and cooling; dropwise adding a hydrogen peroxide solution for 1-12 h; standing for layering to obtain a lower layer organic phase-1, washing the organic phase-1 with a cleaning solution, and standing for layering to obtain a lower layer organic phase-2; purifying. The reaction system ofthe synthetic process is simple, environmentally friendly, safe and controllable, is low in production cost, and can meet the requirements of technical economy; the prepared di-epoxide is high in purity and yield and low in solvent content, chroma and halogen content, and is suitable for large-scale industrial production.
METHOD FOR PRODUCING ALICYCLIC DIEPOXY COMPOUND
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Paragraph 0057, (2015/05/26)
The present invention provides a method for producing an alicyclic diepoxy compound at a higher yield by carrying out epoxidation of an alicyclic olefin compound at a higher reaction rate. The method is a method for producing an alicyclic diepoxy compound represented by formula (1) below by reacting an alicyclic olefin compound represented by formula (2) below with hydrogen peroxide in the coexistence of the alicyclic olefin compound represented by formula (2) below, a hydrogen peroxide solution, a powdered solid catalyst support and a powdered solid catalyst all together: wherein R1 to R12 are each hydrogen, halogen, an alkyl group optionally having halogen or an alkoxy group optionally having a substituent.
METHOD FOR PRODUCING EPOXY COMPOUND
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Paragraph 0055-0058, (2015/05/26)
In order to produce an epoxy compound with a less chlorine content at a higher reaction rate and yield, the present invention provides a method for producing an epoxy compound by reacting a compound having a carbon-carbon double bond with hydrogen peroxide in the coexistence of the compound having a carbon-carbon double bond, the hydrogen peroxide solution, a powdered solid catalyst support and a powdered solid catalyst all together, the solid catalyst comprising isopolyacids produced from (a) tungstic acid or a salt thereof and (b) a quaternary ammonium salt compound and/or a pyridinium salt, selected from halogen-free compounds.
METHOD FOR PRODUCING EPOXY COMPOUND
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Paragraph 0062; 0068, (2015/04/15)
The present invention provides a method for producing an epoxy compound by expoxidation of an olefin compound with good productivity wherein a compound having a carbon-carbon double bond is reacted with hydrogen peroxide in the coexistence of (a) a compound having a carbon-carbon double bond, (b) a hydrogen peroxide solution, (c) a powdered solid catalyst support and (d) a powdered catalyst and optionally (e) an organic solvent, the total mass of (c) and (d) being 100 percent by mass or less on the basis of the total mass of (a), (b) and (e).
METHOD FOR PRODUCING EPOXY COMPOUND
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Paragraph 0074, (2015/05/26)
A method is provided for carrying out epoxidation of an olefin compound with good productivity. The method produces an epoxy compound by reacting a compound having a carbon-carbon double bond with hydrogen peroxide by carrying out repeatedly or continuously the following steps: (1) reacting a compound having a carbon-carbon double bond with hydrogen peroxide in the coexistence of (a) the compound having a carbon-carbon double bond, (b) a hydrogen peroxide solution, (c) a powdered solid catalyst support, and (d) a powdered solid catalyst, and optionally further (e) an organic solvent to produce an epoxy compound; (2) separating the epoxy compound reaction product from the reaction mixture produced in (1); and (3) adding (d) and also adding (a), (b), (c), and optionally further (e) to the mixture of the powdered solid catalyst support and powdered solid catalyst after separating the reaction product in (2).
METHOD FOR PRODUCING EPOXY COMPOUND USING SOLID CATALYST
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Paragraph 0077, (2016/12/16)
PROBLEM TO BE SOLVED: To provide a method for epoxidizing an olefin compound with good productivity. SOLUTION: There is provided a method for producing an epoxy compound by reacting a compound having a carbon-carbon double bond and hydrogen peroxide in the presence of a compound a carbon-carbon double bond, hydrogen peroxide, a solid carrier powder and a solid catalyst powder, wherein the solid catalyst contains isopolyacids and the isopolyacids are produced from a catalyst raw material containing at least one selected from (a) a tungstic acid or a salt thereof and (b) a salt of an alkali earth metal and a cationic polymer. COPYRIGHT: (C)2015,JPOandINPIT
Highly selective epoxidation of cycloaliphatic alkenes with aqueous hydrogen peroxide catalyzed by [PO4{WO(O2) 2}4]3-/imidazole
Kamata, Keigo,Sugahara, Kosei,Ishimoto, Ryo,Nojima, Susumu,Okazaki, Motoya,Matsumoto, Takaya,Mizuno, Noritaka
, p. 2327 - 2332 (2014/08/18)
In the presence of imidazole as an additive, a phosphorus-containing tetranuclear peroxotungstate, THA3[PO4{WO(O 2)2}4] (I, THA=tetra-n-hexylammonium), could act as an efficient catalyst for epoxidation of cycloaliphatic alkenes with 30% aqueous hydrogen peroxide (H2O2). Compound I showed higher catalytic activity and selectivity to epoxide than other tungstates. By using the I/imidazole system, various kinds of cycloaliphatic alkenes could be highly selectively converted into the acid-sensitive epoxides including industrially important diepoxides in high to excellent yields under the almost stoichiometric conditions. The 1H NMR spectroscopy showed that imidazole would work not only as a proton acceptor but also as a Lewis base to remarkably suppress the acid-catalyzed ring opening of epoxides.
Liquid-phase synthesis of cyclic diene diepoxides using metal halides and hydrogen peroxide
Alimardanov, Kh. M.,Sadygov,Garibov,Abdullaeva, M. Ya.
, p. 1302 - 1308 (2013/02/21)
Optimal conditions were found for induced hydroxyhalogenation of cyclic dienes (tetrahydroindene, 4-vinylcyclohexene and 5-vinyl- and 5-cyclohexenylbicyclo[2.2.1]hept-2-enes) in the system [MHlg-HA or HHlg]-H 2O2 (or NaClO). Dehydrohalogenation of the chloro- and bromohydrins thus obtained with powdered potassium carbonate gave the corresponding diepoxy derivatives, and their hydrolysis led to mixtures of stereoisomeric tetrahydric alcohols. Pleiades Publishing, Ltd., 2012.
