Related Experiment Video
Updated: Jul 12, 2026

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks (MOFs)
Published on: January 17, 2020
Non-heme iron(II) complexes are efficient olefin aziridination catalysts
Katie L Klotz1, Luke M Slominski, Anthony V Hull
1Department of Chemistry, University of Wisconsin-Eau Claire, 105 Garfield Avenue, Eau Claire, WI 54702, USA.
Iron(II) complexes with nitrogen ligands efficiently catalyze olefin aziridination using PhINTs. This discovery offers a new pathway for synthesizing valuable aziridine compounds.
Area of Science:
- Organometallic Chemistry
- Catalysis
- Organic Synthesis
Background:
- Aziridines are important heterocyclic compounds with broad applications in pharmaceuticals and materials science.
- Developing efficient catalytic methods for aziridine synthesis is a key goal in organic chemistry.
Purpose of the Study:
- To investigate the catalytic activity of Iron(II) complexes with polydentate nitrogen donor ligands in the aziridination of olefins.
- To explore the scope and efficiency of this catalytic system using N-sulfonyl-1,2-iodosamines (PhINTs) as nitrogen sources.
Main Methods:
- Synthesis and characterization of Iron(II) complexes featuring polydentate nitrogen ligands.
- Aziridination reactions of various olefins using PhINTs in the presence of the Iron(II) catalyst.
- Analysis of reaction products using standard spectroscopic techniques.
Main Results:
- The Iron(II) complexes effectively catalyzed the rapid aziridination of a range of olefins.
- High yields and selectivities were observed for the desired aziridine products.
- The catalytic system demonstrated good functional group tolerance.
Conclusions:
- Iron(II) complexes of polydentate nitrogen donor ligands represent a novel and efficient catalytic system for olefin aziridination.
- This method provides a practical route to valuable aziridine derivatives.
- Further studies could explore variations in ligands and reaction conditions for broader applicability.
Related Concept Videos
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
Heterogeneous Catalysis
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...
Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.

