The Fold-In Approach to Bowl-Shaped Aromatics. Synthesis of Chrysaoroles

Myśliwiec, D.; Stępień, M.
Angew. Chem. Int. Ed. 2013, 52, 1713–1717 | view at publisher's site

 Molecular jellyfish: A new family of bowl-shaped aromatic compounds swims into view (see picture). Quite unlike true jellyfish, chrysaoroles possess a rigid skeleton, which is assembled from fused carbazole units. Their synthesis involves a fold-in step to convert a macrocyclic precursor into the bowl-shaped target molecule.