Differential and Substrate-Selective Reactivity of Calix[4]arene Derivatives with Cyclenyl-Zn(II) Modifications at the Upper Rim
作者:Gulsum Ozturk、Engin U. Akkaya
DOI:10.1021/ol0360694
日期:2004.1.1
see text] Novel "cone conformation" calix[4]arene derivatives, carrying either one or two cyclen (1,4,7,10-tetra-azacyclododecane) moieties at the upper rim, have been synthesized. The hydrolytic activities of the Zn(II) complexes of these calixarenes were studied. A surprising behavior was observed with p-nitrophenylstearate; whereas the bis-cyclenyl-2Zn(II) complex showed negligible hydrolytic activity
合成了新颖的“圆锥构象”杯[4]芳烃衍生物,其在上边缘带有一个或两个环(1,4,7,10-四氮杂环十二烷)部分。研究了这些杯芳烃的Zn(II)配合物的水解活性。用对-硝基苯基硬脂酸酯观察到令人惊讶的行为。而双环烯基-2Zn(II)配合物在背景下的水解活性可忽略不计,而单核配合物在pH 8.5时显示出明显的400倍速率增加。