Nucleophilic ion pairs. I. Enhanced esterolytic reactivity of hydrophobic ion paors in micellar systems.
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概要
- 論文の詳細を見る
The reaction of the dodecyl(2-hydroxyimidophenethyl)dimethylammonium bromide(DHDB) and <I>N</I>-methylmyristohydroxamate (MMHA) anion with <I>p</I>-nitrophenyl acetate was studied mostly in the presence of aqueous nonionic micelles. Addition of a hydrophobic ammonium ion, TMAG, considerably enhanced the reactivity of MMHA but not that of DHDB (a zwitterion). The rate enhancement for MMHA-TMAC and DHDB in nonionic micelles were almost comparable to those in cationic(CTAB) micelles. It was proposed that the large enhancement observed for some anionic nucleophiles in cationic micelles is to a great extent caused by the formation of hydrophobic, desolvated ion pairs.
- 公益社団法人 日本化学会の論文
著者
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Kunitake Toyoki
Department Of Chemical Engineering & Technology Faculty Of Engineering Kyushu University
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Shinkai Seiji
Department Of Applied Chemistry Faculty Of Engineering Kyushu University
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Okahata Yoshio
Department of Applied Chemistry, Kyushu University 36
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