Reaktion #80957

Reaktionsgleichung

zirconium tetrachloride

5-cyclopentadienyl-5-(9-fluorenyl)-1-hexene

→

zirconocene

Lösungsmittel

chlorodimethylsilane

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe solvent was then evaporated in a vacuum
2. 2
   SonstigeA white solid was recovered which
3. 3
   Sonstigedried

Vorschrift

Then 1.61 g of the bridged ligand having a vinyl terminated branch, i.e. 5-cyclopentadienyl-5-(9-fluorenyl)-1-hexene, was dissolved in 10 mL of chlorodimethylsilane at room temperature. Then approximately 1 mL of hexachloroplatinic acid was added and a reaction mixture stirred overnight at room temperature. The solvent was then evaporated in a vacuum. A white solid was recovered which was concluded to be 1-chlorodimethyl-silyl-5-cyclopentadienyl-5-(9-fluorenyl)-hexane. A portion of this material was then contacted with silica gel (Merck No. 7734) the process involved contacting 2 g of the silica gel dried as explained in Example IV and 1.56 g of the 1-chlorodimethyl-silyl-5-cyclopentadienyl-5-(9-fluorenyl)-hexane in a manner analogous to that used in the analogous step in Example IV. Then a supported zirconocene was prepared by reacting 1.74 g of that solid with 0.8 g of zirconium tetrachloride using a technique of the general type disclosed in Example IV. The resulting supported metallocene will be referred to herein as catalyst 34A.

Quelle