Controlling Reaction Routes in Noble‐Metal‐Catalyzed Conversion of Aryl Ethers
- Institute for Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
- Institute for Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA, Department of Chemistry and Catalysis Research Institute Technische Universität München Lichtenbergstrasse 4 85748 Garching Germany
Abstract Hydrogenolysis and hydrolysis of aryl ethers in the liquid phase are important reactions for accessing functionalized cyclic compounds from renewable feedstocks. On supported noble metals, hydrogenolysis is initiated by a hydrogen addition to the aromatic ring followed by C−O bond cleavage. In water, hydrolysis and hydrogenolysis proceed by partial hydrogenation of the aromatic ring prior to water or hydrogen insertion. The mechanisms are common for the studied metals, but the selectivity to hydrogenolysis increases in the order Pd2 pressure, thus, the selectivity to hydrogenolysis is maximized by increasing temperature and decreasing H 2 pressure. Selectivity to C−O bond cleavage reaches >95 % in water and alkaline conditions.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1872488
- Report Number(s):
- PNNL-SA-172526; e202203172
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 30 Vol. 61; ISSN 1433-7851
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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