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Selective Hydrogenation of Nitroarenes Catalyzed by Nanostructured Tungsten Disulfide
Defect-Mediated Selective Hydrogenation of Nitroarenes on Nanostructured WS2 .
Chem. Sci. 2019;
21 January 2020 (online)
Nanostructured tungsten disulfide (2H-WS2) catalyzed the selective hydrogenation of nitroarenes in the presence of other reducible functional groups under H2 (50 bar) to give the corresponding anilines exclusively in >99% conversions with 78 to >99% selectivities.
The preparation of 2H-WS2 was previously reported (B. Mahler, V. Hoepfner, K. Liao, G. A. Ozin J. Am. Chem. Soc. 2014, 136, 14121). In the hydrogenation of 1-nitro-3-vinylbenzene, the catalyst was reused four times without a significant decline in conversion, whereas the selectivity increased during the recycling experiment (fresh: 94% selectivity; 4th reuse: >99% selectivity).