Design of a bio-inspired imidazole-based iron catalyst for epoxidation of olefins: Mechanistic insights

Kristin Schröder, Kathrin Junge, Anke Spannenberg, Matthias Beller

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

A novel defined iron catalyst for the epoxidation of aromatic and aliphatic olefins with hydrogen peroxide as the terminal oxidant is described. Our catalyst approach is based on bio-inspired both alkyl- and aryl-substituted imidazoles in combination with cheap and abundant iron trichloride hexahydrate. Heterocycles similar to imidazole can be used as ligands in this epoxidation system, too. The novel system is stable towards air and water. It is shown that the mechanism depends strongly on the used ligands and substrates. In the presence of radical scavengers no carbon-centered radical could be detected.

Original languageEnglish
Pages (from-to)364-370
Number of pages7
JournalCatalysis Today
Volume157
Issue number1-4
DOIs
StatePublished - 17 Nov 2010
Externally publishedYes

Keywords

  • Epoxidation
  • Homogeneous catalysis
  • Hydrogen peroxide
  • Iron
  • N-ligands

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