Optically active naphthalene derivative, process for preparation

Details Optically active naphthalene derivative, process for preparation Optically active naphthalene derivative, process for preparation

1993-12-14

1995-06-06

Harris, C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 560100, 568735, C09K 1932, C09K 1952, C07C 6976, C07C 3914

Patent

active

054220386

ABSTRACT:
Optically active naphthalene derivatives including optically active naphthylcarboxylic acid derivative, hydroxynaphthalene derivative, alkoxynaphthylalkanol derivative and alkylnaphthylalkanol derivative have the following structural formula: ##STR1## wherein R.sup.1 denotes an alkyl group of 3-20 carbon atoms, R.sup.2 denotes an alkyl group of 1-20 carbon atoms optionally substituted with halogen atom(s) or an alkoxyalkyl group of 2-20 carbon atoms optionally substituted with halogen atom(s), X denotes --COO-- or --OCO--, k, l and m denotes 0 or 1 respectively, n denotes an integer of 0-6, p denotes 0 or 1, and the asterisk indicates an asymmetric carbon atom, with the proviso that when k is 0, l and m are not 1 at the same time, and when k is 1, m is 1, and when n is 0 and m is 1, X is --COO--. These optically active naphthalene derivatives are useful as a ferroelectric liquid crystal materials or its component having a sufficient spontaneous polarization and by which a high speed response is possible and which further exhibits a ferroelectric liquid crystal phase in a temperature region around room temperature. Processes for the preparation of the optically active derivatives are also disclosed.

REFERENCES:
patent: 4113647 (1978-09-01), Coates et al.
patent: 4680137 (1987-07-01), Isoyama et al.
patent: 4943651 (1990-07-01), Nishiyama et al.
patent: 5061399 (1991-10-01), Jenner et al.
patent: 5072021 (1991-12-01), Nakatsuka et al.
patent: 5141668 (1992-08-01), Nishiyama et al.
patent: 5169556 (1992-12-01), Mochizuki et al.
Chem. Abstracts 89:108822w.
Molecular Crystals & Liquid Crystals/Letters Section, vol. 4, Nos. 3-4, 1987, pp. 87-92, Montreux, CH; N. H. Tinh et al: "New ferroelectric materials".
Chemical Abstracts 112:108709h.
Chemical Abstract 109:149048y.

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