New Domino Transposition/Intramolecular Diels—Alder Reaction in Monocyclic Allenols: A General Strategy for Tricyclic Compounds.

A novel and direct synthetic strategy to prepare fused tricycles has been developed from monocyclic allenols, masked functionalized dienes, which underwent a domino allenol transposition/intramolecular Diels-Alder reaction.