Pd/C触媒によるジベンゾフランの選択的水素化分解反応

抄録

Active-carbon-supported palladium catalysts were found to be effective in selective hydrogenolysis of dibenzofuran (DBF) to 2-phenylphenol (OPP). Good results were obtained at relatively low initial pressure of H2. On increasing the H_, pressure hydrogenation of aromatic nuclei became predominant. At 400°C and 10 kg/cm₂ of initial H2 pressure, 73.3%selectivity for OPP was obtained at 22.9% conversion of DBF. On increasing the temperature hydrogenolysis to gaseous products occurred considerably. From the change in selectivity with the DBF conversion, a consecutive reaction pathway by way of OPP leading to biphenyl and then to cyclohexylbenzene was implied.