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Adaptive Organic Nanoparticles of a Teflon‐Coated Iron (III) Porphyrin Catalytically Activate Dioxygen for Cyclohexene Oxidation
Authors:Amit Aggarwal  Sunaina Singh  Jacopo Samson  Charles Michael Drain
Abstract:Self‐organized organic nanoparticles (ONP) are adaptive to the environmental reaction conditions. ONP of fluorous alkyl iron(III) porphyrin catalytically oxidize cyclohexene to the allylic oxidation products. In contrast, the solvated metalloporphyrin yields both allylic oxidation and epoxidation products. The ONP system facilitates a greener reaction because about 89% reaction medium is water, molecular oxygen is used in place of synthetic oxidants, and the ambient reaction conditions used require less energy. The enhanced catalytic activity of these ONP is unexpected because the metalloporphyrins in the nanoaggregates are in the close proximity and the TON should diminish by self‐oxidative degradation. The fluorous alkyl chain stabilizes the ONP toward self‐oxidative degradation.
Keywords:catalyst  dynamic light scattering  metalloporphyrin  organic nanoparticles  oxidation  green chemistry
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