| 摘要 |
NEW MATERIAL:A cyclohexanol derivative of a carboxylic acid having S-(+)-4- (2'-methylbutylphenyl) group expressed by formulaI[(n) and (m) are 0 or 1; R is 1-10 C alkyl; * is asymmetric carbon]. EXAMPLE:trans-4-( trans-4'-Propylcyclohexyl )cyclohexyl S-(+)-4-( 2''-methylbutyl) biphenyl-4'-carboxylate. USE:A liquid crystal display element substance, having the helical molecular structure and optical activity, and stable to heat, light, air and water. PROCESS:S-(+)-4-(2''-Methylbutyl)biphenyl-4-carboxylic acid expressed buy formula II is converted into an acid chloride by the conventional method and then reacted with a trans-4-(trans-4'-alkylcyclohexyl)cyclohexanol expressed by formula III in the presence of pyridine to give the compound expressed by formulaI(n and m are 1). |
