Trifluoromethyl acting as stopper in [2]rotaxane |
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| Authors: | Dasgupta Suvankar Huang Kuo-Wei Wu Jishan |
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| Institution: | Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543. |
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| Abstract: | A modified dumbbell obtained by replacing one of the phenyl groups of the dibenzylammonium with a strong electron-withdrawing trifluoromethyl group templated the synthesis of the smallest 2]rotaxane reported so far. The trifluoromethyl group not only enhances the templating effect of the dumbbell but also acts as the stopper to prevent dethreading of a 20]crown ether macrocycle. |
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