NOVEL LIQUID CRYSTAL COMPOUND AND LIQUID CRYSTAL COMPOSITION

摘要

NEW MATERIAL:A liquid crystal compound expressed by formula I (R is 1-20C alkyl or alkoxy; X is halogen or nitro; n is 0 or 1). EXAMPLE:4-[(S)-2-Methylbutyloxy)phenyl 3'-chloro-4'-tetradecyloxybiphenyl-4- carboxylate. USE:A liquid crystal material having ferroelectricity, particularly availability to liquid crystal display elements having improved response and memory properties. PREPARATION:An acid chloride expressed by formula II is reacted with an optically active phenolic derivative expressed by formula III in the presence of a basic substance, e.g. pyridine, to afford the aimed compound expressed by formula I.