摘要:
An optically active lactone derivative represented by the following general formula (I): wherein R¹ represents a straight-chain or branched alkyl, alkoxyl, alkanoyloxy, alkoxycarbonyl, alkoxyalkyl, alkoxyalkanoyloxy, or alkoxyalkoxyl group having 1 to 20 carbon atoms or an optically active group of each of the above kinds, R² represents a straight-chain or branched alkyl group having 1 to 20 carbon atoms, and the asymmetric carbon atoms at the 2- and 4-positions in the lactone ring each independently is of the (S) or (R) configuration, an intermediate therefor, a process for producing the intermediate, a liquid-crystal composition, and a liquid-crystal display device.
摘要:
The present invention discloses an optically active compound represented by the following general formula (I):
wherein R¹ represents an alkyl, alkoxyl, or alkoxyalkanoyloxy group which has 1 to 18 carbon atoms and may be substituted with fluorine, chlorine, or cyano group; R² represents an alkyl group having 1 to 18 carbon atoms;
m is 0 or 1; Y represents a single bond, -CH₂O-, or -COO-; Z represents a single bond or -COO-; and C * and C ** each independently represents an asymmetric carbon atom of the (R) or (S) configuration, an intermediate therefor being represented by the following general formula (II):
wherein R² represents an alkyl group having 1 to 18 carbon atoms, n is 0 or 1, and C * and C ** each independently represents an asymmetric carbon atom of the (R) or (S) configuration, a process for producing the intermediate, and a liquid-crystal compound using the optically active compound.