ChemInform Abstract: (p-cymene)RuLCl2 (L: 1,3-Bis(2,4,6-trimethylphenyl)imidazol-2-ylidene and 1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene) and Related Complexes as Ring Closing Metathesis Catalysts

Complexes of (η6-arene)ruthenium bearing the carbene ligand 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) and 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) Ru(IMes)(Cl)2(η6-arene), Ru(IPr)(Cl)2(η6-arene), and [RuCCCPh2(IMes)(Cl)(η6-arene)]PF6 were prepared and found to be efficient catalyst precursors for ring closing olefin metathesis.