Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 8, Pages 2110-2114Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201611076
Keywords
aryl ethers; hydrogenation; palladium; reductive hydrolysis; selective cleavage
Categories
Funding
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences
- DOE's Office of Biological and Environmental Research at Pacific Northwest National Laboratory
Ask authors/readers for more resources
Metallic palladium surfaces are highly selective in promoting the reductive hydrolysis of aromatic ethers in aqueous phase at relatively mild temperatures and pressures of H-2. At quantitative conversions, the selectivity to hydrolysis products of PhOR ethers was observed to range from 50% (R=Ph) to greater than 90% (R=n-C4H9, cyclohexyl, and PhCH2CH2). By analysis of the evolution of products with and without incorporation of (H2O)-O-18, the pathway was concluded to be initiated by palladium metal catalyzed partial hydrogenation of the phenyl group to an enol ether. Water then rapidly adds to the enol ether to form a hemiacetal, which then undergoes elimination to cyclohexanone and phenol/alkanol products. A remarkable feature of the reaction is that the stronger Ph-Obond is cleaved rather than the weaker aliphatic O-R bond.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available