Issue 11, 2020
From the journal:

Catalysis Science & Technology

Pushing the limits of activity and stability: the effects of Lewis acids on non-heme iron–NHC epoxidation catalysts†‡

Florian Dyckhoff,§a   Jonas F. Schlagintweit,§a   Robert M. Reicha  and  Fritz E. Kühn ORCID logo *a  

* Corresponding authors

a Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85748 Garching bei München, Germany
E-mail: fritz.kuehn.ch.tum.de

Abstract

The catalytic performance of tetradentate iron–NHC complexes in the epoxidation of cis-cyclooctene is considerably improved by addition of strong Lewis acids. Unprecedented TOFs of up to 410 000 h−1 are obtained by applying Sc(OTf)3, Ce(OTf)4 or the significantly cheaper Fe(ClO4)3·H2O as supporting additives. Due to reactivation of an oxo-bridged FeIII–O–FeIII deactivation species TONs of up to 1200 at 20 °C are achieved.

Graphical abstract: Pushing the limits of activity and stability: the effects of Lewis acids on non-heme iron–NHC epoxidation catalysts

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Article information

DOI
https://doi.org/10.1039/D0CY00631A
Article type
Communication
Submitted
30 Mar 2020
Accepted
09 May 2020
First published
11 May 2020

Catal. Sci. Technol., 2020,10, 3532-3536

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Pushing the limits of activity and stability: the effects of Lewis acids on non-heme iron–NHC epoxidation catalysts

F. Dyckhoff, J. F. Schlagintweit, R. M. Reich and F. E. Kühn, Catal. Sci. Technol., 2020, 10, 3532 DOI: 10.1039/D0CY00631A

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