Hoveyda‐Type Quinone‐Containing Complexes – Catalysts to Prevent Migration of the Double Bond under Metathesis Conditions

Three new quinone‐containing Hoveyda‐type complexes have been synthesised and fully characterised. Their ability to suppress undesired double‐bond migration along the carbon chain during metathesis reactions was examined. It was proved that these catalysts decrease the amounts of undesired side‐products with a shifted double bond in the reaction mixture.