A Facile and Efficient Preparation of Tropone from Di-7-Cycloheptatrienyl Ether Using Trifluoroacetic Acid as a Catalyst

References

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• The trifluoroacetic acid was added slowly to prevent sudden boiling over, because the reaction is exothermic.
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• Volatile trifluoroacetic acid is removed at this stage, and the recovered 3 can be utilized for another reaction process.
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