Patent ID: 8481747

Claim:
A method for synthesizing a metathesis reaction product having a terminal olefin, the method comprising contacting, in the presence of a metathesis catalyst, an olefinic substrate comprised of at least one internal olefin with ethylene, wherein the catalyst is present in an amount that is less than about 1000 ppm relative to the amount of the olefinic substrate, and wherein the metathesis catalyst has the structure of formula (IIa): wherein: M is Ru; X 1 and X 2 are anionic ligands; R 1 is selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, and substituted heteroatom-containing hydrocarbyl; Q is selected from the group consisting of heteroatom-containing hydrocarbylene and substituted heteroatom-containing hydrocarbylene, wherein M is connected to a heteroatom, wherein a five or six member ring is formed with M and the heteroatom, and wherein two or more substituents on adjacent atoms within Q may be taken together to form an additional, optionally substituted cyclic structure; n1 is zero or 1; L 1 has the structure of formula (IIIc): L 3 is a neutral electron donating ligand; wherein Ar 1 and Ar 2 are independently aryl substituted with at least one group selected from the group consisting of C 5 -C 12 alkyl, C 5 -C 12 alkenyl, C 5 -C 12 alkynyl, C 5 -C 12 aryl, C 6 -C 12 aralkyl, and C 6 -C 12 alkaryl; α is an optional double bond; and R 13 , R 14 , R 15 , and R 16 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 Ar 1 , Ar 2 , R 13 , R 14 , R 15 , and R 16 may be taken together to form a cyclic group, and provided that R 14 and R 16 are not present if α is present.