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Updated: May 24, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Functionalization of poly(ferrocenyldimethylsilane) via lithiation of the cyclopentadienyl rings
Alejandro Presa Soto1, Laurent Chabanne, Jiawen Zhou
1School of Chemistry, University of Bristol, BS8 1TS, Bristol, United Kingdom.
Abstract:
The metallation of the cyclopentadienyl (Cp) ligands of poly(ferrocenyldimethylsilane) (PFDMS) can be performed by reaction with the Schlosser's base pair t-BuLi/KOt-Bu in THF. Subsequent treatment with a series of electrophiles affords a range of Cp-substituted polymers with up to an average of 1.8 new substituents per repeating unit. NMR studies on polymers containing trimethylsilyl groups and deuterium on the Cp rings are indicative of high regioselectivity with selective metallation at the β-carbon.
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