67003-50-3Relevant articles and documents
DIELS-ALDER REACTIONS CATALYZED BY LEWIS ACID CONTAINING SOLIDS: RENEWABLE PRODUCTION OF BIO-PLASTICS
-
Paragraph 0191, (2015/01/06)
The present disclosure is related to silica-based Lewis acid catalysts, being essentially devoid of strong Br?nsted acid character, and their ability to effect the [4+2] cycloaddition and dehydrative aromatization of dienes and dienophiles containing oxygenated substituents to form substituted benzene products. In some embodiments, the processes comprise contacting biomass-derived substrates with ethylene to form terephthalic acid and its derivatives.
Preparation and reactivity of polystyrene-supported iodosylbenzene: Convenient recyclable oxidizing reagent and catalyst
Chen, Jiang-Min,Zeng, Xiao-Mei,Middleton, Kyle,Yusubov, Mekhman S.,Zhdankin, Viktor V.
experimental part, p. 1613 - 1617 (2011/08/03)
A facile preparation of novel polystyrene-supported iodosylbenzene (PS-ISB, loading of IO up to 1.50 mmol/g) from iodopolystyrene is described. This resin has been successfully used for efficient oxidation of a diverse collection of alcohols to aldehydes and ketones in the presence of BF3OEt 2. PS-ISB can also be employed as efficient co-catalyst in combination with RuCl3 in the catalytic oxidation of alcohols and aromatic hydrocarbons, respectively, to corresponding carboxylic acids and ketones using Oxone as the stoichiometric oxidant. Georg Thieme Verlag Stuttgart ? New York.
Oxidation of benzylic alcohols and ethers to carbonyl derivatives by nitric acid in dichloromethane
Strazzolini, Paolo,Runcio, Antonio
, p. 526 - 536 (2007/10/03)
Nitric acid in dichloromethane may be successfully employed for the oxidation of benzylic alcohols and ethers to the corresponding carbonyl compounds. The proposed method proved to be of general applicability, affording very good yields of aldehydes and ketones and showing interesting chemoselectivity in many instances, allowing competitive aromatic nitration to be avoided, as well as - in the case of aldehydes - any further oxidation to carboxylic acids. The reaction probably proceeds by a radical mechanism, the active species in the oxidation process being NO2. Competitive formation of nitro esters was observed in some cases, whereas poor results were obtained with allylic and non-benzylic substrates. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.