Convenient Synthesis of Angular Triquinane from 4-Alkenylfulvene via Thermal Cycloaddition Followed by Skeletal Rearrangement of the Resulting [4 + 2] Adduct
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Alkenylfulvene prepared by the annulation of allylidenetriphenylphosphorane with 1,4-ynedione proceeded thermal cycloaddition in a highly regio- and stereoselective manner to give [4 + 2] adduct which was then converted into triquinane derivative by the treatment with LHMDS-<I>t</I>-BuOK after hydrolysis of the enol ether group.
- Chemistry Letters
Chemistry Letters 37(4), 454-455, 2008-04-05
The Chemical Society of Japan