601491-87-6Relevant articles and documents
Magic ring rotaxanes by olefin metathesis
Kilbinger, Andreas F. M.,Cantrill, Stuart J.,Waltman, Andrew W.,Day, Michael W.,Grubbs, Robert H.
, p. 3281 - 3285 (2003)
Trick or treat? Ruthenium alkylidene catalyzed ring-closing metathesis of crown ether like diene substrates around a dumbbell-shaped secondary ammonium ion affords [2]rotaxanes. The reversible nature of this process has been demonstrated through a magic ring synthesis, wherein the preformed olefinic macrocycle and dumbbell-shaped component equilibrate to form the hydrogen-bond-stabilized [2]rotaxane in the presence of a metathesis catalyst (see scheme).