What is it about?
Characterization of cyclohexandiamine/Fe3O4/ZnO core/shell nanomagnetic composite and its application for the asymmetric Kinugasa reaction
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Why is it important?
A novel magnetic composite catalyst has been prepared by immobilizing a chiral diamine on core/shell Fe3O4/ZnO. This new catalyst was characterized using X‐ray diffraction, energy‐dispersive X‐ray analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis and vibrating sample magnetometry. The performance of the catalyst was investigated in the asymmetric Kinugasa reaction.
Perspectives
We introduced a novel and mild procedure for the preparation of a heterogeneous catalyst system by immobilizing (R,R)‐ cyclohexandiamine on the surface of Fe3O4/ZnO core/shell MNPs. The resultant catalyst combines many advantages such as low cost, long‐term stability, high catalytic activity and easy recovery for Kinugasa reaction in PEG. This mild and operationally simple method provides a one‐step route to cis‐β‐lactams in good yields and diastereoselectivities (up to 85% yield; >99:1 d.r.).
Professor Javad Safaei-Ghomi
University of Kashan
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This page is a summary of: Preparation and characterization of cyclohexandiamine/Fe3
O4
/ZnO core/shell nanomagnetic composite as a novel reusable catalyst and its application for the diastereoselective synthesis of β-lactams via the asymmetric Kinugasa reaction, Applied Organometallic Chemistry, March 2017, Wiley,
DOI: 10.1002/aoc.3763.
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