Kinetics of the tungstate-catalyzed H2O2 oxidation of amines in aqueous methanol. Acidity effect.
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概要
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Oxidation of <I>N</I>,<I>N</I>-dimethylaniline and benzylamine with H<SUB>2</SUB>O<SUB>2</SUB> catalyzed by Na<SUB>2</SUB>WO<SUB>4</SUB> has been kinetically studied in buffered 50% aqueous methanol at 25 °C. The rates with a catalytic amount of Na<SUB>2</SUB>WO<SUB>4</SUB>fit Eq.: <I>v</I>=<I>k</I>[amine]<I><SUB>t</SUB></I>[Na<SUB>2</SUB>WO<SUB>4</SUB>]<I><SUB>t</SUB></I>[H<SUB>2</SUB>O<SUB>2</SUB>]<SUP>0</SUP> and the pH profile of rate constant shows no dissociation of peroxotungstate at pH 5–10. <I>N</I>,<I>N</I>-Dimethylaniline gives <I>N</I>-oxide (73%) and benzylamine gives benzaldehyde oxime (65%) under the present kinetic conditions.
- 公益社団法人 日本化学会の論文
著者
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Ogata Yoshiro
Department Of Mechanical Engineering Ii Faculty Of Engineering Kyoto University:(present Address)res
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Maeda Hirokazu
Department of Applied Chemistry, Faculty of Engineering, Nagoya University
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Tomizawa Kohtaro
Department of Applied Chemistry, Faculty of Engineering, Nagoya University
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