Patent ID: 7387980
Filing Date: 2008-06-17
Classification: C07F,C08F

Abstract:
1. A method comprising reacting one or more reagents in the presence of a catalyst comprising a metal-ligand complex and optionally one or more activators, under conditions sufficient to yield one or more reaction products, the metal-ligand complex being characterized by the formula: wherein M is a metal selected from the group consisting of groups 3-6 and lanthanides of the periodic table of elements; R T is a bridging group of the general formula -(T′R J is an optionally substituted heterocyclic group containing a five-membered heterocycle, the five-membered heterocycle including at least one but no more than four heteroatoms and including a nitrogen, phosphorus, oxygen, sulfur, or carbene in a ring position adjacent to the ring atom bonded to T, wherein the nitrogen, phosphorus, oxygen, sulfur, or carbene in the ring position adjacent to the ring atom bonded to T is bonded to M via a dative bond, provided that if the five-membered heterocycle includes a nitrogen, phosphorus, oxygen, or sulfur in the ring position adjacent to the bond to T, the five-membered heterocycle contains at least two heteroatoms; x is 1 or 2; each L is independently selected from the group consisting of hydrogen, halogen, optionally substituted alkyl, heteroalkyl, allyl, diene, alkenyl, heteroalkenyl, alkynyl, heteroalkynyl, aryl, heteroaryl, alkoxy, aryloxy, boryl, silyl, amino, phosphino, ether, thioether, phosphine, amine, carboxylate, alkylthio, arylthio, 1,3-dionate, oxalate, carbonate, nitrate, sulphate, and combinations thereof, provided that optionally, two or more L groups are joined into a ring structure and that one or more of the ligands L may be ionically bonded to the metal M; and m′ is 1, 2, 3, or 4.