NEW MATERIAL:The compound of formulaI(R is H or 1W15C alkyl).
EXAMPLE: 4-[trans-4'-(trans-4"-Propylcyclohexyl)cyclohexyl]benzonitrile.
USE: A liquid crystal composition exhibiting nematic liquid crystal phase over a wide temperature range. It is stable against water, heat, air, light, etc., and has low viscosity.
PROCESS: The compound of formulaIis prepared by (1) reacting bromobenzene with metallic Mg in THF to obtain phenyl magnesium bromide, (2) reacting the product with 4-(trans-4'-alkylcyclohexl)cyclohexanone, (3) dehydrating the resultant compound of formula II in the presence of KHSO4 to obtain the compound of formula III, (4) hydrogenating the compound using a Raney-Ni catalyst, (5) halogenating the resultant compound of formula IV with e.g. HIO3 to obtain the compound of formula V, and (6) cyanizing the product with Cu(CH)2.
TSUJI MASAKAZU
SUGIMORI SHIGERU
