Translational Isomerism in Some Two- and Three-Station [2]Rotaxanes
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.