Facilitated Proton Transfer by a Novel 2-Aminothiazole Derivative Across the Water/1,2-Dichloroethane Interface
作者:Haluk Bingol、Ahmet Coskun
DOI:10.1007/s10953-011-9681-7
日期:2011.9
The behavior of proton transfer facilitated by a novel thiazole derivative, N-methyl-4-(4-phenoxyphenyl)thiazol-2-amine (MPPT), across the water/1,2-dichloroethane (1,2-DCE) interface was investigated electrochemically. The ionic partition diagram for MPPT was obtained from interpretation of the cyclic voltammograms. The apparent partition coefficient of MPPT was evaluated by the shaking-flask method under experimental conditions, while that for the protonated form of MPPT was calculated from its transfer potential obtained from the ionic partition diagram. It was suggested that the mechanism for transfer of MPPT across the water/1,2-DCE) interface depends on the pH of the aqueous phase. The parameters of the facilitated proton transfer across the water/1,2-DCE interface were evaluated as a quantitative measure of its lipophilicity.
通过电化学方法研究了新型噻唑衍生物 N-甲基-4-(4-苯氧基苯基)噻唑-2-胺(MPPT)在水/1,2-二氯乙烷(1,2-DCE)界面上促进质子转移的行为。通过对循环伏安图的解释,得出了 MPPT 的离子分配图。在实验条件下,用摇瓶法评估了 MPPT 的表观分配系数,而质子化形式的 MPPT 的表观分配系数则是根据离子分配图得出的转移电位计算得出的。研究表明,MPPT 在水/1,2-DCE)界面上的转移机制取决于水相的 pH 值。评估了水/1,2-二氯丙烯界面上质子转移的促进参数,作为其亲油性的定量衡量标准。