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Aerobic Epoxidation of Low-Molecular-Weight and Polymeric Olefins by a Supramolecular Manganese Porphyrin Catalyst

Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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Catalysts 2019, 9(2), 195; https://doi.org/10.3390/catal9020195
Received: 29 January 2019 / Revised: 15 February 2019 / Accepted: 16 February 2019 / Published: 21 February 2019
(This article belongs to the Special Issue Transition Metal Complexes as Catalysts in Organic Chemistry)
We report on the highly efficient epoxidation of low-molecular-weight and polymeric olefins catalyzed by a supramolecular manganese porphyrin complex using molecular oxygen as an oxidant and an aldehyde as a co-reductant. At ambient temperature and under optimized reaction conditions, the catalyst showed high activity and stereoselectivity. The efficiency of the supramolecular manganese porphyrin was higher than that of a reference porphyrin catalyst, possibly because it was more stable under the applied reaction conditions. Mechanistic studies suggest that a manganese oxo porphyrin complex may be an intermediate in the epoxidation reaction. View Full-Text
Keywords: manganese porphyrins; aerobic oxidation; enzyme-like catalysis; processive catalysis manganese porphyrins; aerobic oxidation; enzyme-like catalysis; processive catalysis
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Bernar, I.; Rutjes, F.P.; Elemans, J.A.; Nolte, R.J. Aerobic Epoxidation of Low-Molecular-Weight and Polymeric Olefins by a Supramolecular Manganese Porphyrin Catalyst. Catalysts 2019, 9, 195.

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