Synthesis of (5E,9E)-5,9-Hexacosadienoic Acid via Copper- and Palladium-Mediated Reactions Using 1-Acetoxy-4-chloro-2-butene as a Synthon.

Abstract
A synthesis of (5E,9E)-5,9-hexacosadienoic acid (1), a double-bond isomer of a marine natural product, was performed using 1-acetoxy-4-chloro-2-butene (2) as a building block.