作者:Mark R. Sambrook、Paul D. Beer、Michael D. Lankshear、R. Frederick Ludlow、James A. Wisner
DOI:10.1039/b518178j
日期:——
method for rotaxane synthesis. The anion-templated synthesis of three new [2]rotaxanes containing positively charged pyridinium axles and neutral isophthalamide macrocyclic components is described. The incorporation of electron withdrawing substituents, such as the nitro group, into the 5-position of an isophthalamide bis-vinyl acyclic precursor results in a significant improvement in [2]rotaxane assembly
阴离子模板用于开发轮烷合成的一般方法。描述了三种带正电荷的吡啶鎓轴和中性间苯二甲酰胺大环组分的新型[2]轮烷的阴离子模板合成。在间苯二甲酰胺双乙烯基无环前体的5位上引入吸电子取代基(例如硝基)可显着提高[2]轮烷的组装产率。轮烷的阴离子结合强度也得到了增强,而轮烷的独特的互锁结合域确保了氯离子(模板阴离子)的选择性得以保持。