The present invention relates to an improvement in the process for preparing a calixarene derivative in which the rotation of its benzene units are hindered and which comprises replacing all or a part of the hydrogen atoms of the hydroxyl groups of a calixarene derivative represented by the general formula: ##STR1## and is characterized by conducting the reaction in the presence of an alkaline earth metal. According to the present invention, an asymmetric calixarene derivative having a "cone" conformation can be selectively prepared by virtue of the template effect of the metal.
本发明涉及一种改进的制备杯
芳烃衍
生物的方法,其中其苯环的旋转受到阻碍,并且包括替换由下式表示的杯
芳烃衍
生物的羟基的所有或部分氢原子:##STR1## 该方法的特点在于在碱土
金属的存在下进行反应。根据本发明,通过
金属的模板效应,可以选择性地制备具有“锥形”构象的不对称杯
芳烃衍
生物。