Efficient cleavage of aryl ether C–O linkages by Rh–Ni and Ru–Ni nanoscale catalysts operating in water

Bulut, Safak and Siankevich, Sviatlana and van Muyden, Antoine P. and Alexander, Duncan T. L. and Savoglidis, Georgios and Zhang, Jiaguang and Hatzimanikatis, Vassily and Yan, Ning and Dyson, Paul J. (2018) Efficient cleavage of aryl ether C–O linkages by Rh–Ni and Ru–Ni nanoscale catalysts operating in water. Chemical Science, 9 (25). pp. 5530-5535. ISSN 2041-6539

Full content URL: http://doi.org/10.1039/C8SC00742J

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Efficient cleavage of aryl ether C–O linkages by Rh–Ni and Ru–Ni nanoscale catalysts operating in water

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Abstract

Bimetallic Ru–Ni and Rh–Ni nanocatalysts coated with a phase transfer agent efficiently cleave aryl ether C–O linkages in water in the presence of hydrogen. For dimeric substrates with weaker C–O linkages, i.e. α-O-4 and β-O-4 bonds, low loadings of the precious metal (Rh or Ru) in the nanocatalysts quantitatively afford monomers, whereas for the stronger 4-O-5 linkage higher amounts of the precious metal are required to achieve complete conversion. Under the optimized, relatively mild operating conditions, the C–O bonds in a range of substituted ether compounds are efficiently cleaved, and mechanistic insights into the reaction pathways are provided. This work paves the way to sustainable approaches for the hydrogenolysis of C–O bonds.

Additional Information:Article is Open Access under Creative Commons Attribution Non-Commercial. CC BY-NC 3.0
Keywords:lignin, bimetallic, heterogeneous catalysis
Subjects:F Physical Sciences > F100 Chemistry
Divisions:College of Science > School of Chemistry
ID Code:33397
Deposited On:09 Oct 2018 13:19

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