P08 超音波照射によるマレイン酸-フマル酸の相互異性化反応機構(ポスター発表)

概要

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In this paper, we demonstrate the isomerization of unsaturated dicarboxylic acids during sonication. Almost all trials were carried out under irradiation of 200 kHz, 200W. Before sonication, pure argon gas (Ar) was passed through the reactant solution in order to expel the air. Concentration and volume of trial samples were 10 mM and 50 cm^3, respectively. Fumaric acid and maleic acid made isomerization under sonication each other. So far, isomerization under ultrasonic irradiation was reported. However, additives were needed for isomerizaiton in those reports. In our system, on the other hand, isomerization occurred without additives. Other major products were malic acid, tartaric acid, and succinic acid. To discuss the role of OH radicals, methanol as radical scavenge was added into the solution. Methanol concentration was 100 mM. When addition of methanol was performed, malic acid and tartaric acid could not be detected. In addition, other reaction paths were also considered.
日本ソノケミストリー学会の論文
2010-10-21