Iptycene
An iptycene is an aromatic compound composed of varying number of arene subunits bound to a bridged bicyclo-octatriene core structure. They are formally derivatives of barrelene. The first and simplest iptycene molecule is triptycene.[1]
The first iptycene was reported in 1931 by Erich Clar.[2] Paul Bartlett's research group developed Clar's method and made the first triptycene.[3] Following Bertlett's work on triptycene, Hart et al., with acknowledgement to Professor Joel F. Liebman, proposed the trivial name iptycene for this class of molecules.[4]