Patent ID: 7250510
Filing Date: 2007-07-31
Classification: C07F

Abstract:
1. A compound of the formula I: wherein R R 3 and R 4 are independently or simultaneously selected from the group consisting of H, halo, C 1-20 alkyl, OC 1-20 alkyl, C 3-20 cycloalkyl, OC 3-20 cycloalkyl, aryl, O-aryl, heteroaryl and O-heteroaryl, said latter 8 groups being optionally substituted and/or one or more of the CH 2 groups in C 1-20 alkyl, OC 1-20 alkyl, C 3-20 cycloalkyl and/or OC 3-20 cycloalkyl is optionally replaced with a heteroatom selected from the group consisting of O, S, and NR 5 ; or R R a is 1, 2 or 3; M is a transition metal; b is an integer representing the number of the anionic ligands X required to fulfill the valency requirements of M; X is an anionic ligand and when b is greater than 1, each X may be the same or different; L is a 5- to 6-membered optionally substituted N-containing aromatic heterocycle coordinated to M through N, which is optionally benzofused, and/or optionally contains one or more other heteroatoms selected from the group consisting of O, S, and NR L is R one or more of the carbons of the alkyl and cycloalkyl groups of R aryl is an optionally substituted mono- or polycyclic aromatic radical containing from 6 to 14 carbon atoms; heteroaryl is a mono- or polycyclic heteroaromatic radical containing from 5 to 14 atoms, of which 1 to 5 atoms may be a heteroatom selected from the group consisting of S, O, N and NR optionally substituted means that one or more of the hydrogens on the group are optionally replaced with halo, OH, C