Patent ID: 8592618

Claim:
A transition metal catalyst having the following structure Ia or Ib: wherein: m=0 or 1, and n=1; p=0; M is a transition metal selected from ruthenium (Ru), molybdenum (Mo) or tungsten (W); L 1 and L 2 are the same or different and each selected from halide anion, carboxylate or aryloxide anion; L is an electron-donating ligand; when m=1, X is nitrogen, sulfur, CH, CH 2 , or carbonyl; Y is nitrogen, imino, alkylcarbonyl, alkoxycarbonyl, arylcarbonyl, aryloxycarbonyl, alkylimino, arylimino, alkylamino, arylamino or heterocyclic amino group; is either single bond or double bond when Y is nitrogen; when m=0, Y is nitrogen, carbonyl, imino, alkoxycarbonyl, aryloxycarbonyl, alkylimino, arylimino, alkylamino, arylamino or heterocyclic amino group; X 1 is a CH or CH 2 and Y 1 is oxygen, nitrogen, carbonyl, imino, heterocyclic aryl, alkylamino, arylamino or a heterocyclic amino group; R 1 is H, alkyl, alkenyl, aryl, arylenyl, alkoxy, alkylthio, arylthio, aryloxy, heteroaryl or heterocyclic group; R 2 is H, alkyl, aryl, alkylcarbonyl, arylcarbonyl heteroaryl or heterocyclic group; E, E 1 , E 2 , E 3 , E 4 , E 5 , E 6 and E 7 each is independently selected from the group consisting of H, halogen atom, nitro, amino, cyano, formyl, sulfinyl, sulfonyl, alkyl, alkoxy, alkylthio, alkylphosphino, alkenyloxy, silanyl, alkylsilyloxy, aryl, aryloxy, arylphosphino, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aryloxycarbonyl, amino, alkylaminocarbonyl, arylaminocarbonyl, alkylamido, arylamido, alkylaminosulfonyl, arylaminosulfonyl, sulfonylamido, heteroaryl and heterocyclic group; each optionally unsubstituted or substituted with an alkyl, alkoxy, alkylthio, aryl, aryloxy, halogen atom or heterocyclic group; each of E, E 1 , E 2 or E 3 may be linked with at least one other of E, E 1 , E 2 or E 3 adjacent moiety to form a polycyclic-ligand via carbon-carbon and/or carbon-heteroatom bonds; and each of E 4 , E 5 , E 6 or E 7 may be linked with at least one other of E 4 , E 5 , E 6 or E 7 adjacent moiety to form a polycyclic-ligand via carbon-carbon and/or carbon-heteroatom bond.