Synthesis and structural characterisation of zinc complexes bearing furanylmethyl and thiophenylmethyl derivatives of (R,R)-1,2-diaminocyclohexanes for stereoselective polymerisation of poly(rac-lactide)

Kyuong Seop Kwon, Saira Nayab, Hyosun Lee, Jong Hwa Jeong

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29 Scopus citations

Abstract

Novel dichloro zinc complexes based on enantiopure N,N-diamine ligands bearing furanylmethyl and thiophenylmethyl pendent groups were synthesised, and their crystal structures were determined using X-ray crystallography. The isopropoxide derivatives (generated in situ) of these well-characterised complexes efficiently catalysed the ring-opening polymerisation (ROP) of rac-lactide (rac-LA) at two different temperatures under controlled conditions. Highly heterotactic polylactide (PLA) was obtained with Pr = 0.80 at -25 °C in THF.

Original languageEnglish
Pages (from-to)32-38
Number of pages7
JournalPolyhedron
Volume77
DOIs
StatePublished - 27 Jul 2014

Keywords

  • Enantiopure ligand
  • Heterotactic polylactide
  • Ring opening polymerisation
  • X-ray crystallography
  • Zinc complexes

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