Optically active compounds

Details Optically active compounds Optically active compounds

1990-02-27

1992-11-03

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229962, 25229966, 544298, 544335, 568579, 568647, 546298, 546302, 546346, C09K 1934, C09K 1932, C09K 1912, C07D23902

Patent

active

051606623

ABSTRACT:
Optically active compounds having the following formulae (1), (2) or (3) ##STR1## wherein R and R' are C.sub.1-20 alkyl groups; X and Y.sub.1 are --, O, S, or divalent groups such as COO, OOC and OCOO; m is 0 or 1; n is 0 to 5; A.sub.2 is a cyclic group, such as p,p'-biphenylene, 2,6-naphthylene, 2,5-pyrimidinylene-1,4-phenylene, A.sub.1 -Y.sub.2 -pyridylene or A.sub.4 -Y.sub.2 -A.sub.5 ; Y.sub.2 is CH.sub.2 CH.sub.2 or C.tbd.C; A.sub.3 is 2,6-naphthylene, A.sub.1 -Y.sub.2 -pyridylene or A.sub.6 -CH.sub.2 CH.sub.2 -A.sub.7 ; and A.sub.1, A.sub.4, A.sub.5, A.sub.6 and A.sub.7 are cyclic groups, such as 1,4-phenylene and/or 4,4'-biphenylene.

REFERENCES:
patent: 4576732 (1986-03-01), Isogai et al.
patent: 4613209 (1986-09-01), Goodby et al.
Synthesis, Journal of Synthetic Organic Chemistry, No. 8, Aug. 1986, pp. 605-692.
Chem. Abst., vol. 110, No. 11, Mar. 13, 1989, p. 656, Abst. No. 94711x and CS-A-240935.
Liquid Crystals and Ordered Fluids, vol. 4, pp. 1-32, Goodby et al., Some Novel Ferroelectric Smectic Liquid Crystals.
Mol. Cryst. Liq. Cryst., 1984, vol. 110, pp. 175-203, Goodby et al., Ferroelectric Liquid Crystals--Structure and Design.

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