pH effects on the radical addition of hydrogensulfite ion to olefins.

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概要

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• The competitive addition of sodium hydrogensulfite to allyl and 2-methylallyl alcohols was investigated at the pH range from 3 to 5. The relative reactivity of allyl alcohol to 2-methylallyl alcohol decreased with increasing pH. Sulfite radical ion was mainly participating in the addition at pH 5, and hydrogensulfite radical at pH 3. From the kinetic analysis of the pH dependence, the ratio of reactivities of allyl alcohol and 2-methylallyl alcohol toward sulfite radical ion was 0.213, and the same ratio toward hydrogensulfite radical was 0.305. Further, the ratio of reactivities of hydrogensulfite radical and sulfite radical ion toward allyl alcohol was 1.32, and the same ratio toward 2-methylallyl alcohol was 0.927. The dissociation constant of hydrogensulfite radical was the order of 3×10<SUP>−5</SUP>(p<I>K</I><SUB>a</SUB>=4.5).

• 公益社団法人 日本化学会の論文

著者

• Miyata Teijiro

  Japan Atomic Energy Research Institute

• Sakumoto Akihisa

  Japan Atomic Energy Research Institute

• Washino Masamitsu

  Japan Atomic Energy Research Institute

関連論文

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