Process for preparing alkylsubstituted cyclopentadienyl...

Details Process for preparing alkylsubstituted cyclopentadienyl... Process for preparing alkylsubstituted cyclopentadienyl...

C - Chemistry, Metallurgy

07

F

C07F 17/00 (2006.01)

Patent

CA 2164914

A process for making a metallocene, said process comprising the steps of (a) reacting an alkylsubstituted cyclopentadiene ligand, which contains a mixture of endo- and exo-isomers, with up to about a 10% excess over a stoichiometric amount of a deprotonation agent based on the amount of endo-isomers, so as to form a salt of said endo- isomers, (b) reacting the endo-isomer salt with a transi- tion or actinide metal compound so as to form said metallocene and (c) optionally separating said exo-isomers and trace amounts of unreacted endo-isomers from said metallocene by distillation.

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