Wiley, Angewandte Chemie International Edition, 23(48), p. 4185-4189, 2009
Wiley, Angewandte Chemie, 23(121), p. 4249-4253, 2009
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Cage me! A linear dumbbell-shaped bipyridinium molecule can template cage formation around itself through sixfold imine bond formation to give an interlocked [2]rotaxane as the single product (see picture). This highly efficient [2+3] clipping occurs despite the symmetry mismatch between the template and the formed macrobicycle.