| 摘要 |
NEW MATERIAL:An optically active amide compound shown by formula I (Z and Z' are single bond, -COO-, -OCO-, -CH2CH2-, -OCH2- or -CH2O-; R is 1-12C alkyl, alkoxy, cyano or halogen; ring A and ring B are 1,4-disubstituted phenylene or trans-1,4-disubstituted cyclohexylene: n is 0 or 1: * is optical active center). EXAMPLE:A compound shown by formula II. USE:Useful as a constituent component for ferroelectric smectic liquid crystal composition. Constituting a display element or electro-optical element having high spontaneous polarization, capable of responding at high speed in a wide temperature range without narrowing temperature range of smectic C phase. PREPARATION:As shown in the reaction formula, a p-substituted benzoic acid shown by formula III is reacted with a chlorinating agent to give a reaction product shown by formula IV, which is reacted with a compound shown by formula V in the presence of a basic substance to give a compound shown by formula I.
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