title: Development of a method for the preparation of ruthenium indenylidene-ether olefin metathesis catalysts.
abstract: The reactions between several derivatives of 1-(3,5-dimethoxyphenyl)-prop-2-yn-1-ol and different ruthenium starting materials [i.e., RuCl₂(PPh₃)₃ and RuCl₂(p-cymene)(L), where L is tricyclohexylphosphine di-t-butylmethylphosphine, dicyclohexylphenylphosphine, triisobutylphosphine, triisopropylphosphine, or tri-n-propylphosphine] are described. Several of these reactions allow for the easy, in-situ and atom-economic preparation of olefin metathesis catalysts. Organic precursor 1-(3,5-dimethoxyphenyl)-1-phenyl-prop-2-yn-1-ol led to the formation of active ruthenium indenylidene-ether complexes, while 1-(3,5-dimethoxyphenyl)-prop-2-yn-1-ol and 1-(3,5-dimethoxyphenyl)-1-methyl-prop-2-yn-1-ol did not. It was also found that a bulky and strong σ-donor phosphine ligand was required to impart good catalytic activity to the new ruthenium complexes.
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Northridge, 18111 Nordhoff Street, Northridge, CA 91330, USA.
authors.forename: Leonel R
authors.initials: LR
authors.lastname: Jimenez
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Tolentino
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Gallon
authors.forename: Yann
authors.initials: Y
authors.lastname: Schrodi
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D002384:Catalysis; D004987:Ethers / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D009942:Organometallic Compounds / Q000138:chemical synthesis*; D010720:Phosphines / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*
chemical_list: D000475:Alkenes; D004987:Ethers; D009942:Organometallic Compounds; D010720:Phosphines; D012428:Ruthenium