Electric Literature of 246047-72-3. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium. In a document type is Article, introducing its new discovery.
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 1H 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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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI