An efficient Heck reaction in water catalyzed by palladium nanoparticles immobilized on imidazolium-styrene copolymers

Kun Qiao, Rie Sugimura, Quanxi Bao, Daisuke Tomida, Chiaki Yokoyama

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

Imidazolium-styrene copolymers were prepared by copolymerization of 1-vinyl-3-butylimidazolium based ionic liquids ([VBIm]X, X = Cl-, BF4-, and PF6-) with styrene, which were used as polymeric supports to immobilize Pd(OAc)2 using a method of alcohol reduction. It was demonstrated that Pd existed in the form of Pd nanoparticles on these imidazolium-styrene copolymers. Using the [VBIm]Cl-styrene copolymer as a support, Pd nanoparticles of less than 6 nm were formed, which was particular interesting, as usually only a Pd carbene complex was formed when Pd(OAc)2 was treated with 1,3-dialkyimidazolium ionic liquids containing a halide anion. The copolymer-supported Pd catalysts were found to be efficient and reusable catalysts for the Heck reaction in water in the absence of a phosphine ligand and phase-transfer catalyst.

Original languageEnglish
Pages (from-to)2470-2474
Number of pages5
JournalCatalysis Communications
Volume9
Issue number15
DOIs
Publication statusPublished - 2008 Sep 20

Keywords

  • Copolymer
  • Heck reaction
  • Ionic liquid
  • Supported Pd catalyst

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Process Chemistry and Technology

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