We report a series of rotaxane-based anion-π catalysts in which the mechanical bond between a bipyridine macrocycle and an axle containing an NDI unit is intrinsic to the activity observed, including a [3]rotaxane that catalyses an otherwise disfavoured Michael addition in >60 fold selectivity over a competing decarboxylation pathway that dominates under Brønsted base conditions. The results are rationalized by detailed experimental investigations, electrochemical and computational analysis.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9303940 | PMC |
| http://dx.doi.org/10.1002/anie.202115961 | DOI Listing |
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