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. © 2012 The Royal Society of Chemistry.
Original language | English (US) |
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Pages (from-to) | 4821 |
Journal | Chemical Communications |
Volume | 48 |
Issue number | 40 |
DOIs | |
State | Published - Mar 24 2012 |