| 摘要 |
NEW MATERIAL:A liquid crystal compound shown by the formula I or formula II (m is 1 or 8; n is 5-14; * is asymmetric carbon atom). EXAMPLE:Optically active 2-[4-n-octyloxyphenyl]-5-[6-methyloctyl]pyrimidine. USE:Useful as a component material for a liquid crystal composition having a chiral smetic C* phase in a wide temperature range including room temperature, improved chemical stability, high response properties and improved compatibility with other various liquid crystal compounds. PREPARATION:A compound shown by the formula III (X is lower alkyldiamine group, hydroxyl group, or lower alkoxy) is reacted with a compound shown by the formula IV in a solvent such as methanol, etc. by the use of an alkali metallic alcoholate, etc., at room temperature - the reflux temperature of the solvent to give a compound shown by the formula I. Compounds shown by the formulas V and VI are used as starting raw materials, the reaction is performed in the same conditions as those above-mentioned, to give a compound shown by the formula II.
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