Guest-dependent complexation of triptycene-derived macrotricyclic host containing one anthracene moiety with paraquat derivatives: construction of [2]rotaxanes
作者:Ya-Kun Gu、Ying Han、Chuan-Feng Chen
DOI:10.1080/10610278.2014.976220
日期:2015.6.3
Complexation between the triptycene-derivedmacrotricyclicpolyether containing an anthracene unit and paraquat derivatives in both solution and solid state was investigated. It was found that the macrotricyclic host with multi-cavity structure could form a series of [2]pseudorotaxanes with different terminal functionalised paraquat derivatives in different threading modes, which subsequently resulted
Highly efficient synthesis of a tristable molecular shuttle and its controlled motion under chemical stimuli
作者:Zheng Meng、Chuan-Feng Chen
DOI:10.1039/c4ob01283f
日期:——
oppering approach, a tristablemolecularshuttle could be efficiently synthesized in 76% yield using a K+ ion template and a bulky isocyanate stopper. This high yield was reasoned from the combination of the powerful template effect and highly effective stoppering reaction. Through detailed studies of the 1H NMR, HSQC and 2D-ROESY NMR spectra, it was proved that the shuttling of the triptycene-derived
根据穿塞剂的方法,使用K +离子模板和庞大的异氰酸酯塞剂,可以以76%的产率有效地合成三稳态分子穿梭。如此高的收率归因于强大的模板效果和高效的封闭反应。通过对1 H NMR,HSQC和2D-ROESY NMR谱的详细研究,证明了均苯四酸二酰亚胺(PmI),蒽醌(AQ)和N-甲基三唑鎓(MtA)的三个位点之间由三萜衍生的大环的穿梭)可以通过化学方式明确实现。通过分析高分辨率电喷雾电离(HR-ESI)质谱和UV-Vis光谱,可以进一步证明分子穿梭的三个不同稳定状态。