Intramolecular Hydrogen-Bonding Modulates the Nucleophilic Reactivity of Ammonium-Peroxycarboxylates
作者:Robert J. Mayer、Armin R. Ofial
DOI:10.1002/ejoc.201801158
日期:2018.11.25
derived from gamma-aminobutyric acid, beta-alanine, and beta-piperidinopropionic acid were synthesized and characterized by spectroscopic methods and X-ray crystallography. To study the nucleophilic reactivities of the corresponding ammonium- and amino-peroxycarboxylates, the kinetics of their reactions with a series of benzhydrylium ions (Ar2CH+) were investigated in alkaline, aqueous solutions at 20 degrees
由 γ-氨基丁酸、β-丙氨酸和β-哌啶基丙酸衍生的铵-过氧羧酸甲磺酸盐合成并通过光谱方法和 X 射线晶体学表征。为了研究相应的铵-和氨基-过氧羧酸盐的亲核反应性,在 20 摄氏度的碱性水溶液中研究了它们与一系列二苯甲基离子 (Ar2CH+) 的反应动力学。使用顺序混合停止流动 UV/可见光度法,通过线性自由能关系 lg k = s(N)(N + E) 确定和分析短寿命亲核试剂与 Ar2CH+ 的反应速率,提供亲核性参数 (N, s(N))过氧羧酸盐。