Patent ID: 7683180

Claim:
A chiral Group 8 transition metal carbene complex comprising the formula: wherein: M is a Group 8 transition metal; X 1 and X 2 are independently selected from the group consisting of anionic ligands and a linker attached to a polymeric substrate, or X 1 and X 2 may be taken together to form a cyclic group; n is 0; R 1 is selected from the group consisting of hydrogen, silyl, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, substituted heteroatom-containing hydrocarbyl, and carboxy; R 2 is selected from the group consisting of hydrogen, silyl, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, and substituted heteroatom-containing hydrocarbyl, or R 1 and R 2 may be taken together to form a cyclic group; Y 1 and Y 2 are heteroatoms independently selected from the group consisting of N, O, S, and P, with the proviso that when Y 1 or Y 2 is O or S, then R 3 or R 4 is absent; R 3 and R 4 are independently selected from the group consisting of hydrogen, functional groups, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, substituted heteroatom- containing hydrocarbyl, and a linker attached to polymeric substrate; R 5 , R 6 , R 7 , and R 8 define chiral centers at the ring carbons and are independently selected from the group consisting of a linker attached to a polymeric substrate, hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, substituted heteroatom-containing hydrocarbyl, and functional groups, optionally substituted with one or more moieties selected from the group consisting of C 1-10 alkyl, C 1-10 alkoxy, C 5-20 aryl, hydroxyl, sulfhydryl, —(CO)—H, halo, and functional groups; L is selected from the group consisting of arsine, stibine, ether, amino, amido, imino, sulfoxide, carboxy, nitrosyl, pyridyl, substituted pyridyl, imidazolyl, substituted imidazolyl, pyrazinyl, and thioether, and may or may not be linked to R 2 , X 1 , and/or X 2 through a spacer moiety; and wherein any two or more of X 1 , X 2 , L, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 can be taken together to form a chelating multidentate ligand.