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Synfacts 2013; 9(8): 0905
DOI: 10.1055/s-0033-1339428
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Co3O4–Nitrogen Complex for Hydrogenation of Nitroarenes

Contributor(s):
Yasuhiro Uozumi
,
Yoichi M. A. Yamada
,
Heeyoel Baek
Westerhaus FA, Jagadeesh RV, Wienhöfer G, Pohl M.-M, Radnik J, Surkus A.-E, Rabeah J, Junge K, Junge H, Nielsen M, Brückner A, Beller M * Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Germany
Heterogenized Cobalt Oxide Catalysts for Nitroarene Reduction by Pyrolysis of Molecularly Defined Complexes.

Nature Chem. 2013;
5: 537-543
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Publication History

Publication Date:
18 July 2013 (online)

 
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Key words

nitroarenes - cobalt oxide - phenanthroline - hydrogenation

Significance

A carbon-supported cobalt oxide-nitrogen catalyst 1 was prepared by pyrolysis (800 °C) of Co(phen)2(OAc)2 on Vulcan XC72R (an activated carbon). The hydrogenation of nitro­arenes was carried out with 1 (1 mol% copper) in THF–H2O under 50 bar of H2 to give the corresponding anilines 2a–j in up to 99% yield.


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Comment

The catalyst was reused nine times in the reaction of nitrobenzene where catalytic activity gradually decreased. The catalyst was characterized with TEM, energy-dispersive X-ray (EDX), XPS, and electron paramagnetic resonance (EPR).


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