Optically active compound
AssigneeAsahi Denka Kogko Kabushiki Kaisha
InventorsSeiichi Takano, Kunio Ogasawara, Toshihiro Shibata, Masaki Kimura, Norio Kurosawa
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Abstract
An optically active compound of the formula (I): ##STR1## R is a halogen atom, a cyano group, an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms, --R' or --O--R' group; R' is a ##STR2## group, wherein Y is a halogen atom, a hydroxyl group, an alkoxy group having 1 to 18 carbon atoms or an acyloxy group having 1 to 18 carbon atoms; X is a direct bond or a ##STR3## group; m, n and p each are each 0 or 1, provided that at least one of m, n and p is 1; and , represents an asymetric carbon atom. The optically active compound can impart a desired helical pitch to a liquid crystal composition
Claims11
An optionally active compound represented by the following formula (I):
- ##STR8## group;
- R represents a halogen atom, a cyano group, an alkyl group carrying 1 to 18 carbon atoms, an alkoxy group carrying 1 to 18 carbon atoms, --R' or --O--R' group;
- R' represents a ##STR9## group, wherein Y represents a chlorine atom or an alkanoyloxy group having 1 to 18 carbon atoms;
- X represents a direct bond or a ##STR10## group;
- m, n and p each represent 0 to 1, provided that at least one of m, n and p is 1;
- and * represents an asymmetric carbon atom.
Dependencies are inferred from the claim text.