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The syntheses of the acyclic triene trans–trans–cis27 and trans–trans–trans31 are described. Macrocyclization and concomitant transannular Diels–Alder reaction were performed with the chloride derivative obtained from the trans–trans–cis triene alcohol 27 yielding a mixture of the tricyclic compounds trans–syn–trans33 and cis–syn–cis34. On the other hand, macrocyclization of the chloride derived from trans–trans–trans triene 31 was not successful. Keywords: transannular process, Diels–Alder reaction, macrocyclic triene, macrocyclization, tricyclic compounds, organic synthesis.

Synthesis and transannular Diels–Alder reaction of a 13-membered macrocyclic triene having a tetrasubstituted enol ether as dienophile