Optically active-1-(2-halogen-substituted-phenyl)-ethanol and its derivative
AssigneeChisso Corporation
InventorsKazutoshi Miyazawa, Ohno Kouji, Naoyuki Yoshida, Masakazu Kaneoya
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Abstract
An optically active compound having characteristics necessary for realizing liquid crystal compositions provided with suitable characteristics, particularly a negative temperature characteristic and a very high twistability, and a liquid crystal composition containing the compound are provided, which optically active compound is expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 are 1-20 C alkyl or alkoxy or H; l, m and n are 0 or 1; X is F, Cl, Br or CN; and ##STR2## each independently represent ##STR3## wherein Y is H, halogen or CN.
Claims2
An optically active compound expressed by the formula ##STR20## wherein R.sup.1 and R.sup.2 each represent an alkyl group or an alkoxy group each of 1 to 20 carbon atoms or hydrogen atom, m and n each represents 1 or either one thereof represents zero, n represents 1 or 0, X represent fluorine atom, chlorine atom, bromine atom or cyano group and ##STR21## represents ##STR22## wherein Y represent either one of hydrogen atom, halogen atom or cyano group.
Dependencies are inferred from the claim text.