Patent ID: 6803429
Filing Date: 2004-10-12
Classification: B01J,C07C

Abstract:
A method for carrying out a ring-opening cross-metathesis (ROCM) reaction between a cyclic olefin and a second olefinic reactant to provide an ROCM product, comprising contacting the cyclic olefin with the second olefinic reactant in the presence of a catalyst composed of a Group 8 transition metal alkylidene complex under conditions and for a time period effective to allow the ROCM reaction to occur, wherein the catalyst has the structure of formula (VII) in which:M is a Group 8 transition metal; X1 and X2 may be the same or different, and are anionic ligands or polymers; R1 is selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, substituted heteroatom-containing hydrocarbyl, and carboxyl; R2 is selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, and substituted heteroatom-containing hydrocarbyl; L is a neutral electron donor ligand; X and Y are heteroatoms selected from N, O, S, and P; p is zero when X is O or S, and is 1 when X is N or P; q is zero when Y is O or S, and is 1 when Y is N or P; Q1, Q2, Q3, and Q4 are selected from hydrocarbylene, substituted hydrocarbylene, heteroatom-containing hydrocarbylene, substituted heteroatom-containing hydrocarbylene, and â€”(CO)â€”; w, x, y and z are independently zero or 1; and R3, R3A, R4, and R4A are independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, and substituted heteroatom-containing hydrocarbyl, wherein any two or more of X1, X2, L, R1, R2, R3, R3A, R4, and R4A can be taken together to form a chelating multidentate ligand.