Chemistry Letters, Vol.45, No.6, 643-645, 2016
Transfer Hydrogenation of 4-Propylphenol Using Ethanol and Water over Charcoal-supported Palladium Catalyst
The aromatic hydrogenation of 4-propylphenol to 4-propylcyclohexanone, cis- and trans-4-propylcyclohexanols proceeded over a charcoal-supported palladium catalyst (Pd/C) in water-ethanol cosolvent at 573 K without using any external hydrogen gas. The ring hydrogenation activities in water-ethanol cosolvent over Pd/C were higher than those with a conventional method using externally supplied hydrogen gas. Both water and ethanol were indispensable for the ring hydrogenation in the water-ethanol cosolvent at 573 K.