Patent ID: 7173097

Claim:
A composition capable of undergoing a metathesis reaction upon mixing its components, the components comprising: an olefin-containing substrate capable of undergoing a metathesis reaction; a carbene complex catalyst capable of initiating the metathesis reaction in the composition, wherein the catalyst has the structure: wherein: M is ruthenium or osmium, X is a neutral electron donor ligand with basicity equal to or higher than that of tricyclohexylphosphine (PCy 3 ), X 2 and X 3 are either the same or different and are any anionic ligand, Z is oxygen (O) or sulfur (S), R 4 is a substituent selected from the group consisting of C 1 â€“C 20 alkyl, C 2 â€“C 20 alkenyl, C 2 â€“C 20 alkynyl, aryl, C 1 â€“C 20 carboxylate, C 1 â€“C 20 alkoxy, C 2 â€“C 20 alkenyloxy, C 2 â€“C 20 alkynyloxy, aryloxy, C 2 â€“C 20 alkoxycarbonyl, C 1 â€“C 20 alkylthio, C 1 â€“C 20 alkylamino, C 1 â€“C 20 alkylsulfonyl and C 1 â€“C 20 alkylsulfinyl, wherein each of the substituents is independently substituted or unsubstituted, and R 5 , a, b, c, and d are either the same or different and are each independently hydrogen or a substituent selected from the group consisting of C 1 â€“C 20 alkyl, C 2 â€“C 20 alkenyl, C 2 â€“C 20 alkynyl, aryl, C 1 â€“C 20 carboxylate, C 1 â€“C 20 alkoxy, C 2 â€“C 20 alkenyloxy, C 2 â€“C 20 alkynyloxy, aryloxy, C 2 â€“C 20 alkoxycarbonyl, C 1 â€“C 20 alkylthio, C 1 â€“C 20 alkylamino, C 1 â€“C 20 alkylsulfonyl and C 1 â€“C 20 alkylsulfinyl, wherein each of the substituents is independently substituted or unsubstituted; and at least one reaction control agent for slowing the progress of the metathesis reaction after mixing the composition components and having the structure: wherein: G is selected from the group consisting of: L 3 , L is a hydrocarbon fragment containing a double or triple bond, L 1 â€“L 9 are each independently selected from the group consisting of L, alkyl, aryl, aralkyl or haloalkyl, A is a Group 14 atom, n=0â€“20, and m=0â€“20.