7214-64-4Relevant articles and documents
Octane oxidation into carboxylic acids
Svetlakov,Nikitin,Nikolaeva
, p. 1230 - 1231 (2007/10/03)
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Direct Oxidation of Methyl Ethers to Carbonyl Compounds with a Combination of Nitrogen Dioxide and Water in the Presence or Absence of Ozone
Suzuki, Hitomi,Takeuchi, Toyomi,Mori, Tadashi
, p. 3111 - 3115 (2007/10/03)
A combination of nitrogen dioxide and water has been found to provide a new agent for the transformation of various alkyl methyl ethers 1 (R = Me) to carbonyl compounds 2 under mild conditions. The oxidation can be achieved successfully in dichloromethane, but hexafluoro-2-propanol was found to be most satisfactory as the solvent. The reaction was generally clean, and simple evaporation gave the expected oxidation product 2 in moderate to good yield. In the presence of ozone, but without water, the similar oxidation was observed only after prolonged reaction time, suggesting that some initial minor reaction with a strong oxidant, possible nitrogen trioxide, afforded an acidic promoter, which then worked as a catalyst similar to that involved in the reaction with a nitrogen dioxide and water system.
Proton Acidity and Chemical Reactivity in Molten Salt Hydrates
Franzyshen, S. K.,Schiavelli, M. D.,Stocker, K. D.,Ingram, M. D.
, p. 2684 - 2688 (2007/10/02)
Molten Ca(NO3)2*4H2O has been used as a model system for studies of proton acidity and chemical reactions (including ester hydrolyses and aromatic nitrations) in molten salt hydrates.Increases in proton acidity caused by addition of acidic hydrates such as AlCl3*6H2O and Cd(NO3)2*4H2O or of aqueous HNO3 can be quantified in terms of changes in Hammett acidity H0, but usually not by the downfield shifts observed in the NMR spectrum.The rates of hydrolysis of selected primary esters (e.g., n-octyl acetate) were found to be linearly dependent on nitric acid concentration, indicating that the acidity of these melts can be changed with little change in water activity.The measurement of kinetic parameters is complicated, however, by side reactions between the organic substrates and HNO2, NO2 (or NO2+) and other species originating from the nitrate ions in the melt.