Synthesis and Structure of a Bifuran-Containing p-Quaterphenoquinone: an Unusual O-cis 2,2'-Bifuran Conformation in the Crystalline State

Article abstract of DOI:10.1016/0040-4039(95)01706-N

5,5'-bis(3,5-di-tert-butyl-4-oxo-2,5-cyclohexadien-1-ylidene)-5,5'-dihydro-2,2'-bifuran has been synthesized.This heteroquaterphenoquinone has been proved to exist in an unusual O-cis bifuran conformation in the solid state by X-ray crystallography.