Fluorinated [2]rotaxanes with spirofluorene motifs: a non-symmetric distribution of the ring component along the axle component
Fluorinated [2]rotaxanes with spirofluorene motifs: a non-symmetric distribution of the ring component along the axle component
复制标题
具有螺芴基序的氟化[2]轮烷：环组分沿轴组分的非对称分布
DOI：
10.1039/d2nj05021h
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发表时间：
2023
影响因子：
3.3
通讯作者：
Saito Shinichi
中科院分区：
文献类型：
--
作者：
Rashid Showkat;Murakami Takashi;Koganezawa Hiroshi;Yoshigoe Yusuke;Hosoya Shoichi;Saito Shinichi
利用螺芴衍生的大环菲咯啉-铜配合物引发端炔氧化二聚反应（Glaser偶联）合成了一系列新型[2]轮烷。通过1H和19 F NMR光谱详细研究了组分之间的尺寸和结构变化及其对动态行为的影响。具有低对称性的取代大环组分的轮烷的NMR谱中的强扰动表明环组分沿着轴组分的非对称分布。在一些[2]轮烷中，观察到环组分在1，3-二炔部分附近的定位。
Oxidative dimerization of terminal alkynes (Glaser coupling) triggered by spirofluorene derived macrocyclic phenanthroline–Cu complexes was implemented to synthesize a series of novel [2]rotaxanes. Size and structural variations among the components and their implications on the dynamic behaviour were investigated in detail through 1H and 19F NMR spectroscopy. Strong perturbations in the NMR spectra of the rotaxanes with substituted macrocyclic components with low symmetry indicated the non-symmetric distribution of the ring component along the axle component. In some [2]rotaxanes, localization of the ring component in the proximity of the 1,3-diyne moiety was observed.