Bifunctional yttrium(III) and titanium(IV) NHC catalysts for lactide polymerisation

D Patel, S T Liddle, S A Mungur, M Rodden, A J Blake, P L Arnold, Polly Arnold

Research output: Contribution to journalArticlepeer-review

Abstract

Lewis acidic yttrium(III) and titanium(IV) derivatives of anionic, metal-tethered carbenes apparently act as bifunctional catalysts for the polymerisation of D,L-lactide, using a combination of Lewis acid and base functionalities to initiate ring opening of the cyclic monomer; the alcohol- and amino-functionalised carbenes from which they derive provide models for the first insertion step, and also display metal-free polymerisation catalysis to generate polylactic acid.

Original languageEnglish
Pages (from-to)1124-1126
Number of pages3
JournalChemical Communications
Issue number10
DOIs
Publication statusPublished - 2006

Keywords

  • RING-OPENING POLYMERIZATION
  • HETEROCYCLIC CARBENE COMPLEXES
  • LIVING POLYMERIZATION
  • TRANSESTERIFICATION REACTIONS
  • D,L-LACTIDE
  • GENERATION
  • MECHANISM

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