29987-76-6Relevant articles and documents
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
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.
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%.
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).