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AbstractA 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 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 crown ether macrocycle. © 2012 The Royal Society of Chemistry.
CitationDasgupta S, Huang K-W, Wu J (2012) Trifluoromethyl acting as stopper in rotaxane. Chemical Communications 48: 4821. doi:10.1039/c2cc31009k.
PublisherRoyal Society of Chemistry (RSC)