Utility of a ruthenium metathesis catalyst for the preparation of end-functionalized polybutadiene

Marc A Hillmyer, Son Binh T. Nguyen, Robert H. Grubbs

Research output: Contribution to journalArticlepeer-review

152 Scopus citations

Abstract

The polymerization of cyclooctadiene (COD) in the presence of an allylic difunctionalized chain transfer agent (1) by a ruthenium metathesis catalyst (Ru) was accomplished. Deprotection of the resulting acetate end-functionalized polybutadiene was performed, leading to commercially important 1,4-hydroxytelechelic polybutadiene (HTPBD) with number average functionalities close to 2.0. The polymerizations were performed at high monomer concentrations or in the absence of solvent, and the robust nature of Ru allowed the use of high monomer to catalyst ratios (∼0.01 mol % Ru relative to total olefin). Investigation of the metathesis of olefin alcohols with Ru showed that side reactions may complicate the use of these compounds as chain transfer agents in metathesis polymerizations. The kinetics of this Ru-catalyzed ring-opening metathesis polymerization with added chain transfer agent was also investigated.

Original languageEnglish (US)
Pages (from-to)718-721
Number of pages4
JournalMacromolecules
Volume30
Issue number4
DOIs
StatePublished - Feb 24 1997

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