Hydrogen-Bonding-Mediated Dynamic Covalent Synthesis of Macrocycles and Capsules: New Receptors for Aliphatic Ammonium Ions and the Formation of Pseudo[3]rotaxanes
作者:Xiao-Na Xu、Lu Wang、Gui-Tao Wang、Jian-Bin Lin、Guang-Yu Li、Xi-Kui Jiang、Zhan-Ting Li
DOI:10.1002/chem.200900309
日期:2009.6.2
Dynamiccovalentsynthesis! Intramolecular hydrogen‐bonding induces amino‐ and aldehyde‐appended aryl amides to adopt a rigid “V”‐shaped conformation. As a result, stable two‐layered capsules can be assembled quantitatively through the one‐step formation of six imine bonds. The newcapsules form complexes with aliphatic diammonium ions to give unique two‐layered pseudo[3]rotaxanes (see figure).