Optically active compound

Details Optically active compound Optically active compound

1990-07-12

1992-09-22

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

549273, C09K 1934, C07D30900

Patent

active

051494620

ABSTRACT:
Disclosed is an optically active compound represented by the formula: ##STR1## wherein R.sub.1 and R.sub.2 are alkyl, alkenyl or alkoxy-alkyl, which may be substituted by halogen, X and U are a direct bond, --O--, --COO-- or --OCO--, Y and Z are a direct bond, --COO--, --OCO--, --CH.sub.2 O-- or --OCH.sub.2 --, A.sub.1 and A.sub.2 are phenylene, cyclohexylene or a phenylene- or cyclohexylene-containing group, p and q are 0 or 1, C* is an asymmetric carbon atom, with the proviso that when Z is a direct bond, q is 0, R.sub.2 is alkyl, Y is a direct bond, --OCO-- or --OCH.sub.2 --. The optically active compound is used as a ferroelectric liquid crystal or an additive to a ferroelectric or non-ferroelectric liquid crystal.

REFERENCES:
patent: 4576732 (1986-03-01), Isogai et al.
patent: 4818431 (1989-04-01), Eidenschink et al.
Patent Abstracts of Japan, vol. 13, No. 501 (C-652) [3849], Nov. 10, 1989, p. 107 C 652; & JP-A-1 199959 (Mitsubishi Rayon Co., Ltd) Nov. 8, 1989 *Abstract*.

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