ANODIC VOLTAMMETRY OF PHENOL AND BENZENETHIOL DERIVATIVES .1. INFLUENCE OF PH ON ELECTROOXIDATION POTENTIALS OF SUBSTITUTED PHENOLS AND EVALUATION OF PK(A) FROM ANODIC VOLTAMMETRY DATA
ANODIC VOLTAMMETRY OF PHENOL AND BENZENETHIOL DERIVATIVES .1. INFLUENCE OF PH ON ELECTROOXIDATION POTENTIALS OF SUBSTITUTED PHENOLS AND EVALUATION OF PK(A) FROM ANODIC VOLTAMMETRY DATA
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DOI：
10.1016/0022-0728(93)80286-q
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发表时间：
1993-07-15
影响因子：
4.5
通讯作者：
HASANLI, B
中科院分区：
文献类型：
--
作者：
STRADINS, J;HASANLI, B
基于阳极伏安法测定取代酚的pK（a）值的方法已被验证并应用于各种情况。在这种方法中，酚的电化学氧化电位的溶液pH值的依赖关系进行了研究。已经测定了100种酚类化合物的pK（a）值，其中包括57种尚未评价pK（a）值的化合物。在水杨酸及其衍生物的电氧化的情况下，由于分子内的酚OH的去质子化的动力学效应进行了观察。
A method for determining the pK(a) values of substituted phenols based on anodic voltammetry has been validated and applied to various cases. In this method the dependence of the electrochemical oxidation potentials of phenols on the solution pH is investigated. pK(a) values have been determined for 100 phenolic compounds, including 57 for which pK(a) values have not been evaluated. Unknown values of some substituent sigma constants have also been determined.In the case of the electro-oxidation of salicylic acid and its derivatives a kinetic effect due to intramolecular deprotonation of the phenolic OH was observed.