Size effects in the alkali metal ion-templated formation of oligo(ethylene glycol)-containing [2]catenanes

作者:Lee Yong Jay; Ho Tsung Hsien; Lai Chien Chen; Chiu Sheng Hsien*
来源:Organic and Biomolecular Chemistry, 2016, 14(3): 1153-1160.
DOI:10.1039/c5ob01956g

摘要

An investigation into the most suitable alkali metal ions for templating the assembly of [2]catenanes from di-, tri-, and tetra(ethylene glycol)-containing guest diamines and isophthalaldehyde has indicated that Na+, K+, and Rb+ ions are optimal for preparing [2]catenanes containing at least one di(ethylene glycol) unit, two tri(ethylene glycol) units, and at least one tetra(ethylene glycol) unit [in the absence of a di (ethylene glycol) unit], respectively.