Indicrect electrooxidation by using ruthenium tetraoxide and chloride ion as recycling mediators. Optimization for the oxidation of diisopropylidene-D-glucose to the ulose.
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概要
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Various factors related to the yield and selectivity for the indirect electrooxidation of diisopropylidene glucose (<B>1</B>) to the ulose <B>2</B> with ruthenium tetraoxide (RuO<SUB>4</SUB>) and chloride ion are investigated. The following is found to be optimum conditions: pH, ca. 10: solvent system, carbon tetrachloride and <I>t</I>-butyl alcohol (ca. 9 : 1); current density, 10–40 mA cm<SUP>−2</SUP>; temperature, 20–40 °C; catalyst amount, 2 mol% of RuO<SUB>2</SUB>·2H<SUB>2</SUB>O (based on <B>1</B>). The optimized electrolysis affords the desired <B>2</B> in 90% yield along with a trace of the cleavaged product <B>3</B> (0.2%) by an overoxidation.
- 公益社団法人 日本化学会の論文
著者
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Torii Sigeru
Department Of Applied Chemistry Faculty Of Engineering Okayama University
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Inokuchi Tsutomu
Department Of Applied Chemistry Faculty Of Engineering Okayama University
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Oki Tsunehei
Department of Applied Chemistry, Faculty of Engineering, Okayama University
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Saeki Takeaki
Department of Applied Chemistry, Faculty of Engineering, Okayama University
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Matsumoto Shigeaki
Department of Applied Chemistry, Faculty of Engineering, Okayama University
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