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A series of cyclobutanones 1–5 were found to rearrange to β-tetralones 6–10, respectively, in the presence of phosphorous pentoxide in benzene at room temperature. The structures of the β-tetralones were inferred by conversion of a number of these known naphthalene derivatives. Possible mechanistic pathways are discussed.
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Abegg et al. (1978) studied this question.
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