| 摘要 |
NEW MATERIAL:The optically active compound of formula (R<1> and R<2> are independently 2-16C straight-chain alkyl) or its racemic compound. EXAMPLE:Optically active 4'-n-hexyloxybiphenyl-4-carboxylic acid 6'-(n- octyloxycarbonyl)ethyloxy)-2'-naphthyl ester. USE:It has chemical stability, exhibits broad liquid crystal temperature range, has excellent compatibility with other liquid crystal substances such as biphenyl compounds, gives a liquid crystal composition having broad liquid crystal temperature range and excellent response characteristics by mixing with other liquid crystal substance and is useful as a component of a liquid crystal composition. PREPARATION:The compound of formula can be produced e.g. by reacting the acid chloride of 4'-n-alkyloxybiphenyl-4-carboxylic acid with n-alkyl 2-(6- hydroxy-2-naphthyl)propionate.
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