Ruthenium Complex Bearing a Hydroxy Group Functionalised N?Heterocyclic Carbene Ligand – A Universal Platform for Synthesis of Tagged and Immobilised Catalysts for Olefin Metathesis

Six olefin metathesis catalysts, based on a common ruthenium precursor featuring hydroxy-substituted N-heterocyclic carbene ligand, were successfully prepared and fully characterised. As proof-of-concept, two of them ([Ru]isonico [Ru]dmab) directly immobilised solid support. These non-covalently heterogenised catalysts are efficient in different reactions sufficiently stable to be used for repeated runs under batch continuous flow conditions. In nonpolar media such as n-hexane, the catalytic character is truly heterogeneous, contamination products with very low.