A Most Unusual Synthesis of Tropones from Phenols

A Most Unusual Synthesis of Tropones from Phenols 

American scientists have been studying intramolecular phenolic cyclisations of the type 1 to 2, and yields are generally good. The transformation 3 to 4, which proceeds in 80% overall yield, has been described in a review article as a fantastically short and efficient synthesis of such tropone systems . 

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