Novel optically active benzene derivatives, process for producin

Details Novel optically active benzene derivatives, process for producin Novel optically active benzene derivatives, process for producin

1988-03-18

1991-03-26

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522996, 25229966, 25229967, 350350S, 560 59, 560 66, 560 73, 560102, 560108, 560109, 560138, 560141, C09K 1912, C09K 1906, G02F 113, C07C 6976

Patent

active

050026933

ABSTRACT:
Disclosed are novel active benzene derivatives represented by the general formula (I): ##STR1## (wherein X represents --COO--, --OCO--, --CH.sub.2 O-- or --OCH.sub.2 --; A represents a hydrogen atom, a halogen atom or an alkyl or alkoxyl group having 1 to 20 carbon atoms; R represents an alkyl group having 1 to 20 carbon atoms; l and m each represents a number of 1 or 2, n represents a number of 0 or 1, but when n is 0 the sum of l and m is 3 or less; and * indicates asymmetric carbon atom), a process for producing the same, liquid-crystalline substances containing said derivatives as active ingredient, and optical switching elements utilizing the liquid crystal compositions containing said liquid-crystalline substances.

REFERENCES:
patent: 4668427 (1987-05-01), Saito et al.
patent: 4882084 (1989-11-01), Ohno et al.
Bouquet et al., Synthetic Comm., 15(13), pp. 1153-7 (1985).
Mol. Cryst. Liq. Cryst. 48, (1978) pp. 37-52.

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