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The selective intramolecular encapsulation of disk-shaped arenes, which are larger than naphthalene and smaller than coronene, has been achieved with the novel host molecule shown on the right. The special guest selectivity enables, inter alia, the preparative separation of similar hydrocarbons (e. g. anthracene and phenanthrene) by liquid/liquid or solid/liquid phase transfer.
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Vögtle et al. (1987) studied this question.
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