Molecular design of selective oxidation catalyst with polyoxometalate

Noritaka Mizuno, Shiro Hikichi, Kazuya Yamaguchi, Sayaka Uchida, Yoshinao Nakagawa, Kazuhiro Uehara, Keigo Kamata

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Efficient H2O2-based oxidation systems with three kinds of polyoxometalates, [γ-SiW10O34(H2O)2]4- (1), [γ-1,2-H2SiV2W10O40]4- (2), and [W2O3(O2)4(H2O)2]2- (3) are reported. The compound 1 can catalyze epoxidation of various olefins including non-activated terminal olefins such as propylene and 1-octene with ≥99% selectivity to epoxide and ≥99% efficiency of H2O2 utilization. It is notable that 2 shows unique stereospecificity, regioselectivity, and diastereoselectivity for the epoxidation of cis/trans olefins, non-conjugated dienes, and 3-substituted cyclohexenes, respectively. The epoxidation of various allylic alcohols with only 1 equiv. H2O2 in water can be efficiently catalyzed by 3 to give the corresponding epoxy alcohols in high yields. Further, the catalyst 3 can be recycled with the maintenance of the catalytic performance.

Original languageEnglish
Pages (from-to)32-36
Number of pages5
JournalCatalysis Today
Volume117
Issue number1-3
DOIs
Publication statusPublished - 2006 Sep 30
Externally publishedYes

Keywords

  • Allylic alcohols
  • Hydrogen peroxide
  • Olefins
  • Oxidation
  • Polyoxometalates

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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