| 摘要 |
PCT No. PCT/CH90/00178 Sec. 371 Date Mar. 21, 1991 Sec. 102(e) Date Mar. 21, 1991 PCT Filed Jul. 23, 1990 PCT Pub. No. WO91/01959 PCT Pub. Date Feb. 21, 1991.A method of cycloalkylating naphthalene with at least one cyclic group, characterized by the following points: a) as catalyst, there is used a zeolite of faujasite structure having pore openings greater than 6.7 (Aangstroem), the silica/alumina ratio of this zeolite being greater than 2.5 and its residual content of alkaline ion(s) being less than 3%; b) the reaction is carried out batchwise in heterogenous liquid/solid phase at a temperature of between 20 degrees C. and 250 degrees C., under a pressure at most equal to 30 bars. Cycloalkylated naphthalenes are obtained by this method, in particular 2,6-dicyclohexyl naphthalene. |
