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

Florian Dyckhoff; Jonas F. Schlagintweit; Robert M. Reich; Fritz E. Kühn

doi:10.1039/d0cy00631a

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

Florian Dyckhoff, Jonas F. Schlagintweit, Robert M. Reich, Fritz E. Kühn

Associate Professorship of Molecular Catalysis

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

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

Original language	English
Pages (from-to)	3532-3536
Number of pages	5
Journal	Catalysis Science and Technology
Volume	10
Issue number	11
DOIs	https://doi.org/10.1039/d0cy00631a
State	Published - 7 Jun 2020

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title = "Pushing the limits of activity and stability: The effects of Lewis acids on non-heme iron-NHC epoxidation catalysts",

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

author = "Florian Dyckhoff and Schlagintweit, {Jonas F.} and Reich, {Robert M.} and K{\"u}hn, {Fritz E.}",

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T2 - The effects of Lewis acids on non-heme iron-NHC epoxidation catalysts

AU - Dyckhoff, Florian

AU - Schlagintweit, Jonas F.

AU - Reich, Robert M.

AU - Kühn, Fritz E.

PY - 2020/6/7

Y1 - 2020/6/7

N2 - The catalytic performance of tetradentate iron-NHC complexes in the epoxidation ofcis-cyclooctene is considerably improved by addition of strong Lewis acids. Unprecedented TOFs of up to 410 000 h−1are obtained by applying Sc(OTf)3, Ce(OTf)4or the significantly cheaper Fe(ClO4)3·H2O as supporting additives. Due to reactivation of an oxo-bridged FeIII-O-FeIIIdeactivation species TONs of up to 1200 at 20 °C are achieved.

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

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U2 - 10.1039/d0cy00631a

DO - 10.1039/d0cy00631a

M3 - Article

AN - SCOPUS:85086430208

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JO - Catalysis Science and Technology

JF - Catalysis Science and Technology

IS - 11

ER -

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

Abstract

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