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Abstract 2,7‐Dihydrotropone upon heating at 60‐100deg; isomerizes (partly) to the 2,3‐isomer. Kinetic data: order of the reaction, influence of solvent and entropy of activation, point to a mechanism involving an intramolecular 1‐5 shift of hydrogen in this cycloheptadiene derivative.
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Borg et al. (1963) studied this question.
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