Abstract
A very large quinone was prepared by the double Diels–Alder reaction of 2,5,9,12-tetra( t-butyl)diacenaphtho[1,2- b:1′,2′- d]thiophene and benzoquinone. The crystal structure of the polycyclic product shows that the central anthraquinone ring system is quite twisted (50°), and the overall structure possesses approximate D 2 symmetry.
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