Ruthenium Olefin Metathesis Catalysts for the Ethenolysis of Renewable Feedstocks

Ruthenium olefin metathesis catalysts have been evaluated for the ethenolysis of methyl oleate, a natural seed oil derivative, to produce useful terminal olefins. Several N‐heterocyclic carbene‐based ruthenium catalysts demonstrate good activity and selectivity for the formation of terminal olefins. In particular, catalysts (10) and (21) achieved higher TONs (>20 000). Communication: In continuation of the research to develop highly efficient catalysts for the biorenewable processes, the ethenolysis reactions of methyl oleate using various ruthenium carbene‐based catalysts are reported. Olefin metathesis enables new alternatives for the development of new oleochemicals for agrochemicals, insect pheromones, waxes, and pharmaceuticals from unsaturated vegetable oils.