反应详情

7.0 g of p-[4-[2-(p-pentylphenyl)vinyl]cyclohexyl]benzonitrile were dissolved in 350 ml of toluene, treated with 1.4 g of palladium/carbon (10%) and hydrogenated at room temperature and normal pressure until the hydrogen uptake came to a standstill. The crude p-[trans-4-[2-(p-pentylphenyl)ethyl]cyclohexyl]benzonitrile obtained after filtering off the catalyst and concentrating the filtrate was recrystallized twice from ethanol. Yield 4.2 g; m.p. (C--N) 61.5° C., cl.p. (N--I) 126° C.