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Article Dans Une Revue Organometallics Année : 2003

New Soluble-Polymer Bound Ruthenium Carbene Catalysts: Synthesis, Characterization, and Application to Ring-Closing Metathesis

Résumé

Exchange of benzylidene ligand of commercially available Grubbs catalysts 1a or 1b with an appropriate soluble-polymer supported ligand leads to new boomerang type catalysts either of the Grubbs (3) or the Hoveyda type (4a or 4b). These catalysts, supported on poly-(ethylene glycol) (PEG), were fully characterized by solution NMR and MALDI mass spectrometry. They were tested in ring-closing metathesis (RCM), and 1 H NMR analysis provided key information concerning the recovery of the catalyst at the end of the reaction. While in the case of 3 the active ruthenium did not hook back to the ligand, catalysts 4a and 4b can be recovered and recycled. 4b owning a N-heterocyclic carbene ligand is particularly active and was used in the parallel synthesis of cyclic amino esters.
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hal-03125677 , version 1 (03-02-2021)

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Frédéric Lamaty, Jean Martinez, Varray Stéphane, René Lazaro. New Soluble-Polymer Bound Ruthenium Carbene Catalysts: Synthesis, Characterization, and Application to Ring-Closing Metathesis. Organometallics, 2003, 22 (12), pp.2426-2435. ⟨10.1021/om021007n⟩. ⟨hal-03125677⟩
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