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The desulphurization of thianthren with a degassed (hydrogen-poor) Raney nickel has been shown to give benzene, biphenyl, dibenzothiophen, and a little triphenylene. Chromatography on a column of Raney cobalt has been used to separate a mixture of biphenyl and dibenzothiophen. The results have been discussed with reference to two radical intermediates (III and V, or VI).
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Badger et al. (1964) studied this question.
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