Patent ID: 7709670

Claim:
A process for producing a substituted metallocene compound, the process comprising: (a) providing a first compound represented by the formula (1): AMX n−1 wherein: M is a transition metal atom having a coordination number of n selected from Group 3, 4, 5 or 6 of the Periodic Table of Elements, or a lanthanide metal atom, or actinide metal atom; n is 2, 3, 4, 5 or 6; A is a monocyclic or polycyclic ligand that is pi-bonded to M and is substituted with at least one halogen or sulfonate substituent directly bonded to any sp 2 carbon atom at a bondable ring position of the ligand; and each X is, independently, a univalent anionic ligand, or two X are joined and bound to the metal atom to form a metallocycle ring, or two X are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand; and (b) reacting said first compound with a transfer-agent which comprises a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, or germylcarbyl radical capable of replacing the halogen or sulfonate substituent of ligand A under reaction conditions in the presence of a coupling catalyst.