Patent ID: 7091292
Filing Date: 2006-08-15
Classification: C08F

Abstract:
1. A method, comprising reacting one or more reagents in the presence of a catalyst under conditions sufficient to yield one or more reaction products, wherein the catalyst comprises a metal complex characterized by the general formula: wherein at least two of the bonds from Y 2 , Y 3 , X and X′ to M are covalent, with the other bonds being dative; AR is an aromatic group that can be the same or different from the other AR groups with each AR being independently selected from the group consisting of optionally substituted aryl and heteroaryl; B is a bridging group having from two to 50 atoms not counting hydrogen atoms and is selected from the group consisting of substituted divalent hydrocarbyl and divalent heteroatom-containing hydrocarbyl; X and X′ are independently selected from the group consisting of oxygen, sulfur, —P(R 30 ) r —, and optionally substituted alkoxy, aryloxy, alkylthio, or arylthio, Y 2 , and Y 3 are independently selected from the group consisting of oxygen, sulfur, —N(R 30 ) r —, and —P(R 30 ) n — and optionally substituted alkoxy, aryloxy, alkylthio, and arylthio, where R 30 is selected from the group consisting of hydrogen, halogen, and optionally substituted hydrocarbyl, heteroatom-containing hydrocarbyl, silyl, boryl, alkoxy, or aryloxy and r is 0 or 1; M is a metal selected from groups 3–6 and lanthanide elements of the periodic table of elements; each L is independently a moiety that forms a covalent, dative or ionic bond with M; and n′ is 1,2, 3 or 4.