Liquid crystalline compounds and process for production thereof

Details Liquid crystalline compounds and process for production thereof Liquid crystalline compounds and process for production thereof

1992-07-16

1994-05-03

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

544298, 544335, 549295, 549320, 549323, 549508, 549322, C09K 1934, C07D23902, C07D30512

Patent

active

053085400

ABSTRACT:
Liquid crystalline compounds having an optionally active .gamma.-lactone ring of the formula: ##STR1## wherein R.sup.1 is a group selected from the group consisting of ##STR2## n and e are each independently 0 or 1; R.sup.3 is an alkyl group having 1 to 15 carbon atoms; R.sup.2 is a group of the formula: --(CO).sub.m --R.sup.4 ; m is 0 or 1; R.sup.4 is hydrogen atom or an alkyl having 1 to 15 carbon atoms; and the symbol * is an asymmetric carbon atom, and an intermediate thereof, and process for the production of the same.

REFERENCES:
patent: 4638073 (1987-01-01), Walba et al.
patent: 4673759 (1987-06-01), Dalcanale
patent: 4797417 (1989-01-01), Okamoto et al.
patent: 4831166 (1989-05-01), Eckhardt et al.
patent: 4909957 (1990-03-01), Sakaguchi et al.
DePuy et al., Journal of Organic Chemistry, vol. 29, p. 2810, (1964).
Chemical Abstracts, vol. 102, No. 9, Mar. 4, 1985, p. 568, Abstract No. 78559h.

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