The Kinetics of the Aminolysis of Phenyl Phenoxyacetates with Benzylamine in Dioxane
作者:Yoshiaki Furuya、Kazuo Itoho
DOI:10.1246/bcsj.43.1403
日期:1970.5
general equation: ν=k_2’+k_3’[Amine]}[Amine][Ester]+k_3”+k_4[Amine]}[Amine][Ester]^2. The reaction was a neucleophilic substitution, and the Hammett plots gave straight lines with positive ρ values. A marked enhancement in the conductivity of the reaction mixtures in 50% dioxane was observed, it increasing with the reaction time. A probable mechanism was presented which involves an ion pair of the
对和间取代的苯氧基乙酸苯酯与苄胺在二恶烷中的反应速率,从而形成 N-苄基苯氧基乙酰胺和相应的酚类,然后对苄胺进行非水滴定。反应满足以下一般方程:ν=k_2'+k_3'[胺]}[胺][酯]+k_3”+k_4[胺]}[胺][酯]^2。该反应是亲核取代,哈米特图给出了具有正 ρ 值的直线。观察到反应混合物在 50% 二恶烷中的电导率显着增强,它随着反应时间的增加而增加。提出了一种可能的机制,它涉及季铵盐类型的离子对,与之前的论文(Y. Furuya、S. Goto、K. Itoho、I. Urasaki 和 A. Morita,Tetrahedron,24, 2367 (1968))。