Pd-catalyzed asymmetric alternating co-polymerization of propene with carbon monoxide using ionic liquids

Hai Jun Wang, Lai Lai Wang, Wing Sze Lam, Wing Yiu Yu, Albert S.C. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)

Abstract

A protocol for Pd-catalyzed stereoselective co-polymerization of propene and carbon monoxide using chiral ligands, such as (2S,3S)-DIOP and (R)-P-Phos in [C4mim][PF6]/[C6mim][PF6] as an ionic liquid medium was developed. With (2S,3S)-DIOP as chiral ligand and [C4mim][PF6] as medium, the Pd-catalyzed co-polymerization of propene and CO gave almost completely regioregular polyketones, and the product polymer showed moderate stereoregularity (61% of ℓ-diads). The highest molar optical rotation = +15.9 and polydispersity = 1.2 were attained when (R)-P-Phos was used as the ligand and [C6mim]PF6as the solvent. The co-polymer exhibited regioregularity of H-H/H-T/T-T (%) = 17:66:17.
Original languageEnglish
Pages (from-to)7-11
Number of pages5
JournalTetrahedron Asymmetry
Volume17
Issue number1
DOIs
Publication statusPublished - 9 Jan 2006

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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