Towards the Making of [12]Collarene

A benzene, an anthracene, and two naphthalene units, bound via 1,4-cyclohexadiene synthetic groups, characterize the structure of the macropolycycle 1, which can be prepared by successive cleavage of O2 and H2O from a precursor. 1 may provide access to fascinating hydrocarbons like [12]cyclacene and [12]beltene.