C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 17/02 (2006.01) B01J 31/22 (2006.01) B01J 31/24 (2006.01) C07C 6/02 (2006.01) C07C 6/06 (2006.01) C07F 15/00 (2006.01) C08F 4/80 (2006.01) C08F 132/08 (2006.01) C08G 61/08 (2006.01)
Patent
CA 2297343
Penta-coordinated ruthenium catalysts for the metathesis reactions of olefins, in particular ring opening metathesis polymerization (ROMP) of cyclo-olefin monomers, which are cationic complexes represented by formula I, II or III: (see formula I) wherein each of X1 and X2, which may be the same or different, is an optionally substituted C3-C20 hydrocarbon group having an allyl moiety as an end group bonded to the ruthenium atom, or X1 and X2 together form a group, optionally substituted, which results from dimerization of an alkene and has at each end an allyl group bonded to the ruthenium atom; L1 and L2 are monodentate neutral electron donor ligands, preferably highly sterically encumbered neutral electron donor ligands such as alkyl phosphines or amines; L~L is a bidentate neutral electron donor ligand, preferably phosphine, amino, imino, arsine or arphos; L3 is a solvent molecule or a neutral mono-dentate electron donor ligand; L~L~L is a tridentate electron donor ligand, preferably phosphorus or nitrogen containing ligand; and [A] is a counter anion weakly coordinated to the ruthenium atom.
Kyllingstad Vernon L.
Mukerjee Shakti
Riches Mckenzie & Herbert Llp
Zeon Chemicals L.p.
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