'4,4’-Diphenoquinones
produced under oxidative conditions, such as combustion, pyrolysis and
oxidative metabolism
(1.) have been detected in different environmental samples
(2.). Toxicological studies of 3,3’,5,5’-tetrachloro-4,4’-diphenoquinone showed
that this substance binds to the nuclear T4 receptor like chlorinated dioxins
(3.). Some compounds of this substance class have been synthesized by the
research group of Prof. Dr. H. Parlar (TU Munich) and an analytical method has been
developed in cooperation with the research groups of Prof. Dr. M. Bahadir and
Prof. Dr. H. Hopf (TU Brunswick)
(2.). Diphenoquinones and dihydroxybiphenyls are in an
equilibrium, which is completely shifted to the dihydroxybiphenyls side by
soxhlet extraction with Acetone as well as by liquid/liquid-partitioning with
Hexane and Water
'