Optically active compound, intermediate therefor, process for pr

Details Optically active compound, intermediate therefor, process for pr Optically active compound, intermediate therefor, process for pr

1990-12-20

1991-11-12

Maples, John S.

Compositions

Radioactive compositions

Nuclear reactor fuel

25229901, 544298, 544335, 560 19, 560 38, 560 39, 560 42, 560102, 560103, 560104, 560106, 560107, 568669, 568704, 568705, 568715, C09K 1934, C07C22700, C07C 6776

Patent

active

050645641

ABSTRACT:
The present invention discloses an optically active compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents an alkyl, alkoxyl, or alkoxyalkanoyloxy group which has 1 to 18 carbon atoms and may be substituted with fluorine, chlorine, or cyano group; R.sup.2 represents an alkyl group having 1 to 18 carbon atoms; ##STR2## m is 0 or 1; Y represents a single bond, --CH.sub.2 O--, or --COO--; Z represents a single bond or --COO--; and C* and C** each independently represents an asymmetric carbon atom of the (R) and (S) configuration, an intermediate therefor being represented by the following general formula (II): ##STR3## wherein R.sup.2 represents an alkyl group having 1 to 18 carbon atoms, n is 0 or 1, and C* and C** each independently represents an asymmetric carbon atom of the (R) or (S) configuration, a process for producing the intermediate, and a liquid-crystal compound using the optically active compound.

REFERENCES:
patent: 4638073 (1987-01-01), Walba et al.
patent: 4777280 (1988-10-01), Eidman et al.
patent: 4880561 (1989-11-01), Tabohashi et al.

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