Highly Active and Chemoselective Hydrogenation of Functionalized Nitroarenes Catalyzed by Single Phase Pyrite FeS2 Nanoparticles on N,S-Codoped Porous Carbon.

08:00 EDT 14th August 2019 | BioPortfolio

Summary of "Highly Active and Chemoselective Hydrogenation of Functionalized Nitroarenes Catalyzed by Single Phase Pyrite FeS2 Nanoparticles on N,S-Codoped Porous Carbon."

Chemoselective hydrogenation of functionalized nitroarenes decorated with one or more reducible groups still remains a challenge. Herein we developed a novel hybrid non-noble iron-based nanocatalyst (named as FeS2/NSC) in a straightforward and cost-effective procedure. Comprehensive characterizations reveal that single phase pyrite FeS2 nanoparticles with precisely defined composition and uniform size were homogeneously dispersed on N,S-codoped porous carbon with large specific surface area, porous channel and high pore volume. The resultant catalyst FeS2/NSC demonstrated superior activity for hydrogenation of functionalized nitroarenes with good tolerance of various functional groups using water as a sustainable and green solvent. Compared with bulk pyrite FeS2 and other non-noble metal-based heterogeneous catalysts reported in the literature, a remarkably enhanced activity was observed under milder reaction conditions. More importantly, the catalyst FeS2/NSC displayed exclusive chemoselectivity to the reduction of nitro group for nitroarenes bearing varying readily reducible groups. Control experiments and DFT calculations reveal that, owing to the large electronegative N and S atoms incorporation into the carbon, the FeS2/NSC not only had a preferential adsorption of nitro group but also had a strong interaction between FeS2 nanoparticles and N,S-codoped porous carbon, which substantially boosted the catalytic activity, chemoselectivity, and stability as well.


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This article was published in the following journal.

Name: ChemSusChem
ISSN: 1864-564X


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