A Convenient Approach to 2-Arylindenes via Suzuki Coupling Reaction of 2-Indenylboronate with Aryl Bromides

摘要

Indenyl derivatives have been extensively employed in organometallic chemistry as ligands.Group 4 metallocene catalysts containing such ligands have shown activities in olefin polymerization as well as in various organic reactions of small molecules.Recently,unbridged bis(2-arylindenyl)-zirconium dichlorides were reported to produce elastomeric polypropylene with a stereoblock microstructure when activated by MAO(methylaluminoxane).Waymouth and coworkers investigated several zirconocene catalysts containing a different aryl substituent in the 2-position of the indenyl ligand for their polymerization behavior,and reported that the bis(2-arylindenyl) framework was important for the production of elastomeric polyproplylene.