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Synthesis and Shuttling Behavior of [2]Rotaxanes with a Pyrrole Moiety

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journal contribution
posted on 07.03.2016, 00:00 by Yusuke Matsuoka, Yuichiro Mutoh, Isao Azumaya, Shoko Kikkawa, Takeshi Kasama, Shinichi Saito
We synthesized [2]­rotaxanes with a pyrrole moiety from a [2]­rotaxane with a 1,3-diynyl moiety. The conversion of the 1,3-diynyl moiety of the axle component to the pyrrole moiety was accomplished by a Cu-mediated cycloaddition of anilines. The cycloaddition reaction was accelerated when the [2]­rotaxane was used as the substrate. The effect of the structure of the pyrrole moiety on the rate of the shuttling was studied.