| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject new compound which is an optically active alcohol having a wide temperature range of an antiferrielectric phase, useful as a principal component of a practical liquid crystal material or a component of a liquid crystal composition having methyl group on asymmetric carbon and further a branched alkyl group having the same number of carbon atoms at the terminal. SOLUTION: This compound is represented by the formula [R is a 6-12C straight-chain alkyl; X is H or fluorine; (m) is 1-3; (n) is 1 or 2; C* is asymmetric carbon), e.g. R-(-)-3-fluro-4-(1,3-dimethylbutyloxycarbonyl)phenyl 4'- nonyloxybiphenyl-4-carboxylate. The compound represented by the formula is obtained by adding thionyl chloride to, e.g. 4-(4'-n-nonyloxy)biphenylcarboxylic acid, thermally refluxing the reactional mixture, distilling off the excessive thionyl chloride, then adding pyridine and toluene to the reactional mixture and dropping a solution of R-(-)-4-hydroxy-2-fluoro-1-(1,3- dimethylbutyloxycarbonylbenzene in benzene thereinto and carrying out a reaction at room temperature.
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