作者:David B. Amabilino、Peter R. Ashton、Sue E. Boyd、Marcos Gómez-López、Wayne Hayes、J. Fraser Stoddart
DOI:10.1021/jo9612584
日期:1997.5.1
The template-directed syntheses of three [2]rotaxanes are described. They all have dumbbell components, with both hydroquinone and resorcinol rings inserted into polyether chains terminated by tetraarylmethane stoppers, that become encircled during the key self-assembly processes by the tetracationic cyclophane, cyclobis(paraquat-p-phenylene), with its two pi-electron deficient bipyridinium units.
描述了三种[2]轮烷的模板指导的合成。它们都具有哑铃成分,氢醌和间苯二酚环均插入四芳基甲烷塞终止的聚醚链中,在关键的自组装过程中被四阳离子环烷,环双(百草枯-对苯撑)及其两个pi-环包围。电子不足的联吡啶单元。通过低温(1)H NMR光谱已经证明,π电子缺陷的四阳离子环烷具有非常高的优先级,以位于这些分子穿梭中的氢醌环周围。