Optically active-1-(2-halogen-substituted-phenyl)-ethanol and it

Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...

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25229901, 2522996, 25229963, 25229966, 350350R, 350350S, 544298, 544315, 544316, 544318, 544334, 544335, 546286, 546288, 546301, 546302, 546342, 558416, 558426, 558427, 560 55, 560 59, 560 61, 560102, 560106, 560107, G02F 113, C07C 6976, C07D23902, C07D21172

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active

049044095

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.

REFERENCES:
patent: 4725688 (1988-02-01), Taguchi et al.
patent: 4728458 (1988-03-01), Higuchi et al.
patent: 4737313 (1988-04-01), Saito et al.
patent: 4764619 (1988-08-01), Gunjima et al.
patent: 4765924 (1988-08-01), Inoue et al.
patent: 4775220 (1988-10-01), Yoshinaga et al.

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