Patent ID: 8426613
Filing Date: 2013-04-23
Classification: B01J,C07F,C08F

Abstract:
1. A method for preparing substituted bis-tetrahydroindenyl ligands that comprises a) preparing a complex of general formula I or I′ b) reacting complex I or complex I′ with R″Li followed by acidification with a diluted acid in order to prepare complex II or complex II′ c) optionally reacting complex II or complex II′ with R* wherein R, R′, R″, R wherein R* and R** are each independently selected from unsubstituted or substituted alkyl or aryl having up to 8 carbon atoms, including polynuclear fused aromatic rings, wherein Y is a Group 13, 14, 15 or 16 of the Periodic Table, wherein X is halogen or alkyl having up to 6 carbon atoms, and wherein n is 0, 1 or 2.