| 摘要 |
PURPOSE:To obtain the title substance rich in 4-substituted and 4,4'-disubstituted isomers by reaction between biphenyl and propylene or isopropyl alcohol in the presence of a catalyst containing a zeolite of a specific pore diameter and niobium oxide. CONSTITUTION:In the reaction between biphenyl and a compound selected from the group consisting of propylene, isopropyl alcohol and isopropylbenzene, a zeolite of 7A pore diameter, or a zeolite having the same X-ray powder diffraction pattern as of mordenite or niobium oxide is used as a catalyst to effect the reaction at 130-350 deg.C, and 2-20kg/cm<2>. The zeolite catalyst is preferably a H-type mordenite of 5-25 silica/alumina ratio, and the niobium catalyst is obtained by heating or roasting a niobate in air. The product is used as an intermediate of biphenyl having substituents in the 4-position, or heat medium or a solvent for pressure-sensitive paper. |
