Optically active lactone derivative, intermediate therefor, proc

Details Optically active lactone derivative, intermediate therefor, proc Optically active lactone derivative, intermediate therefor, proc

1990-04-27

1991-10-29

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 549458, C09K 1934, C09K 1930, C09K 1952, C07D30793

Patent

active

050613987

ABSTRACT:
An optically active lactone derivative represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a straight-chain or branched alkyl, alkoxyl, alkanoyloxy, alkoxycarbonyl, alkoxyalkyl, alkoxyalkanoyloxy, or alkoxyalkoxyl group having 1 to 20 carbon atoms or an optically active group of each of the above kinds, R.sup.2 represents a straight-chain or branched alkyl group having 1 to 20 carbon atoms, ##STR2## or trans-1,4-cyclohexylene group of the formula and the asymmetric carbon atoms at the 2- and 4-positions in the lactone ring each independently is of the (S) or (R) configuration, an intermediate therefor, a process for producing the intermediate, a liquid-crystal composition, and a liquid-crystal display device.

REFERENCES:
patent: 4818431 (1989-04-01), Eidenschink et al.
patent: 4909957 (1990-03-01), Sakaguchi et al.
patent: 4973425 (1990-11-01), Kazuhiko et al.

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