29987-76-6Relevant academic research and scientific papers
Efficient heterogeneous epoxidation of alkenes by a supported tungsten oxide catalyst
Kamata, Keigo,Yonehara, Koji,Sumida, Yasutaka,Hirata, Kazuhisa,Nojima, Susumu,Mizuno, Noritaka
, p. 12062 - 12066 (2011)
Oxidation optimization: A combination of tungsten and zinc oxides on a SnO2 support (W-Zn/SnO2) is a heterogeneous and reusable solid catalyst for selective oxidation with aqueous H2O2. With it, various substrates, such as alkenes, amines, silanes, and sulfides, were oxidized into the corresponding products in high yields (see scheme). The catalyst can be reused several times without an appreciable loss in catalytic performance. Copyright
Open and rearranged norbornane derived polycyclic cage molecules as potential neuroprotective agents through attenuation of MPP+- and calcium overload-induced excitotoxicity in neuroblastoma SH-SY5Y cells
Egunlusi, Ayodeji O.,Malan, Sarel F.,Omoruyi, Sylvester I.,Ekpo, Okobi E.,Palchykov, Vitalii A.,Joubert, Jacques
, (2020)
The neuroprotective effects of closed polycyclic cage molecules such as NGP1-01, memantine and amantadine have been extensively explored. These effects are mostly linked to the antagonism of the N-methyl-D-aspartate (NMDA) receptor- and the blockage of vo
g-C3N4/metal halide perovskite composites as photocatalysts for singlet oxygen generation processes for the preparation of various oxidized synthons
Corti, Marco,Chiara, Rossella,Romani, Lidia,Mannucci, Barbara,Malavasi, Lorenzo,Quadrelli, Paolo
, p. 2292 - 2298 (2021/04/12)
g-C3N4/metal halide perovskite composites were prepared and used for the first time as photocatalysts forin situ1O2generation to perform hetero Diels-Alder, ene and oxidation reactions with suitable dienes and alkenes. The standardized methodology was made applicable to a variety of olefinic substrates. The scope of the method is finely illustrated and the reactions afforded desymmetrized hydroxy-ketone derivatives, unsaturated ketones and epoxides. Some limitations were also observed, especially in the case of the alkene oxidations, and poor chemoselectivity was somewhere observed in this work which is the first application of MHP-based composites forin situ1O2generation. The experimental protocol can be used as a platform to further expand the knowledge and applicability of MHPs to organic reactions, since perovskites offer a rich variety of tuning strategies which may be explored to improve reaction yields and selectivities.
Synthesis of new azapolycyclic scaffolds via the domino aminolysis of dicyclopentadiene diepoxide in water
Palchykov, Vitalii A.,Gaponova, Rita G.,Omelchenko, Iryna V.,Kasyan, Liliya I.
supporting information, (2020/06/17)
A convenient method is reported for the multigram scale synthesis of compounds containing the novel octahydro-1H-2,5-epimino-4,7-methanoindene azapolycyclic system in good yields. This method involves the domino aminolysis of readily available dicyclopentadiene diepoxide in water at 165 °C. 2D NMR and XRD spectra of the products were studied in detail.
Method for catalytically oxidizing dicyclopentadiene through solid acid (by machine translation)
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Paragraph 0024-0052, (2020/05/14)
Compared. the prior art, the method disclosed by the invention adopts a supported heteropoly acid catalytic oxidation dicyclopentadiene technology, to carry out catalytic oxidation reaction through a fixed bed or a suspension bed reactor with dicyclopentadiene as a raw material, as an oxidant, through a fixed bed or a suspension bed reactor in the presence of a solvent to prepare a catalyst, for catalyzing and oxidizing by using a fixed bed or a suspension bed reactor in the presence of a solvent to prepare the dicyclopentadiene, by the method . The method is simple, and is easy to recover, environment-friendly, target product ratio 96%. (by machine translation)
Preparation method of dicyclopentadiene dioxide based on modified nano aluminum oxide loaded heteropolyacid type compound catalyst
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Paragraph 0033-0046, (2020/05/14)
The invention discloses a method for preparing dicyclopentadiene dioxide by catalytic oxidation of dicyclopentadiene serving as a raw material in the presence of a solvent through a suspended bed or afixed bed reactor by taking a modified nano aluminum oxide loaded heteropolyacid type compound as a catalyst and hydrogen peroxide as an oxidant. Compared with the prior art, the preparation method provided by the invention has the advantages that the catalyst is long in service life, stable in performance, simple to separate and high in product yield, and the reaction yield of dicyclopentadienedioxide is greater than 96%.
Method for catalytic oxidation of dicyclopentadiene by supported heteropoly acid
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Paragraph 0022-0051, (2020/05/14)
The invention provides a method for catalytic oxidation of dicyclopentadiene by a supported heteropoly acid. According to the method, a supported heteropoly acid catalytic oxidation dicyclopentadieneprocess is adopted; dicyclopentadiene is used as a raw material, hydrogen peroxide is used as an oxidizing agent, a quaternary phosphonium salt-containing silylation reagent grafted and modified nanoMgO loaded heteropoly acid or peroxyheteropoly acid is used as a catalyst, and a fixed bed or suspended bed reactor is adopted for catalytic oxidation reaction in the presence of a solvent to preparedicyclopentadiene dioxide. Compared with the prior art, the method is simple, the catalyst is good in heat resistance, stable in service life, easy to recycle and environmentally friendly, and the yield of the target product is larger than 96%.
COMPOSITION FOR CURABLE RESIN, CURED PRODUCT OF SAID COMPOSITION, PRODUCTION METHOD FOR SAID COMPOSITION AND SAID CURED PRODUCT, AND SEMICONDUCTOR DEVICE
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Paragraph 0158-0160, (2020/11/30)
The invention relates to a curable resin composition containing (A) a multifunctional benzoxazine compound having two or more benzoxazine rings, (B) an epoxy compound having at least one norbornane structure and at least two epoxy groups, (C) a biphenyl type epoxy compound, and (D) a curing agent, and optionally (E) an inorganic filler and (F) a curing accelerator; a cured product thereof; methods of producing the curable resin composition and the cured product; and a semiconductor device in which a semiconductor element is disposed in a cured product obtained by curing a curable resin composition containing components (A) to (D), and optionally components (E) and (F).
SO2F2-Mediated Epoxidation of Olefins with Hydrogen Peroxide
Ai, Chengmei,Zhu, Fuyuan,Wang, Yanmei,Yan, Zhaohua,Lin, Sen
, p. 11928 - 11934 (2019/10/02)
An inexpensive, mild, and highly efficient epoxidation protocol has been developed involving bubbling SO2F2 gas into a solution of olefin, 30% aqueous hydrogen peroxide, and 4 N aqueous potassium carbonate in 1,4-dioxane at room temperature for 1 h with the formation of the corresponding epoxides in good to excellent yields. The novel SO2F2/H2O2/K2CO3 epoxidizing system is suitable to a variety of olefinic substrates including electron-rich and electron-deficient ones.
Method for synthesizing dicyclopentadiene dioxide
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Paragraph 0024; 0030-0033, (2019/05/16)
The present invention discloses a method for synthesizing dicyclopentadiene dioxide. According to the method, dicyclopentadiene is used as a reaction raw material, hydrogen peroxide is used as an oxidant, poly m-halogenated styrene-divinylbenzene quaternary phosphonium salt type anion exchange resin supported heteropoly acid or peroxoheteropolyacid is used as a catalyst, and an epoxidation reaction is performed by using a fixed bed or a batch tank reactor to obtain dicyclopentadiene dioxide. According to the present invention, the synthesis method is simple, the catalyst has advantages of goodheat resistance, stable service life and environmental friendliness, and the yield of the target product is more than 90%.
