1447970-33-3Relevant academic research and scientific papers
Using threading followed by shrinking to synthesize highly stable dialkylammonium-ion-based rotaxanes
Wang, Liang-Yun,Ko, Jia-Ling,Lai, Chien-Chen,Liu, Yi-Hung,Peng, Shie-Ming,Chiu, Sheng-Hsien
, p. 8850 - 8860 (2013/07/25)
Herein, we report a threading followed by shrinking approach for the synthesis of rotaxanes by using an oxygen-deficient macrocycle that contained two arylmethyl sulfone units and the dumbbell-shaped salt bis(3,5-dimethylbenzyl)ammonium tetrakis(3,5-trifluoromethylphenyl)borate as the host and guest components, respectively. The extrusion of SO2 from both of the arylmethyl sulfone units of the macrocyclic component in the corresponding [2]pseudorotaxane resulted in a [2]rotaxane that was sufficiently stable to maintain its molecular integrity in CD3SOCD3 at 393 K for at least 5 h. Shrink wrap: A threading followed by shrinking method, which was used to extrude both arylmethyl sulfone motifs from the macrocyclic components of dialkylammonium-ion-based [2]pseudorotaxanes, afforded robust [2]rotaxanes that were sufficiently stable to maintain their molecular integrity in CD3SOCD3 at 393 K for at least 5 h (see figure). Copyright
