Chemical Communications

Trifluoromethyl acting as stopper in [2] rotaxane

S Dasgupta, KW Huang, J Wu

文献索引：Dasgupta, Suvankar; Huang, Kuo-Wei; Wu, Jishan Chemical Communications, 2012 , vol. 48, # 40 p. 4821 - 4823

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被引用次数: 18

摘要

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.