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The aromatization of dihydroarenes, which in some cases (e.g. synthesis of 9,10-dialkylanthracenes) was formerly only possible by devious means, can now be accomplished with potassium fencholate (1) as base and fenchone (2) as hydride acceptor. Since (1) is regenerated, only catalytic amounts are required.
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Reetz et al. (1978) studied this question.
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