First Transformation of Unsaturated Fatty Esters Involving Enyne Cross-Metathesis

The ruthenium-catalysed enyne cross-metathesis of several alkyne derivatives with terminal olefins was performed. These reactions were efficiently achieved Under mild conditions in dimethyl carbonate, an eco-friendly solvent. A unique one-pot reaction based on an ethenolysis step followed by an enyne cross-metathesis allowed the efficient transformation of renewable unsaturated fatty esters into valuable conjugated 1,3-dienes of interest for further transformations.