Abstract
Polychlorinated biphenylenes from pyrolysis of chlorobenzenes are identified and quantified by combined evaluation of GC‐MS and HPLC‐UV data. 9,10‐Tetrachlorophenyl‐9,10‐dehydroanthra‐cene., a Diels‐Alder product in co‐pyrolysis of pentachlorobenzene and anthracene, demonstrates dehydrobenzene as intermediate in pyrolytic biphenylene formation.
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