Optically active compound having a .delta.-valerolactone ring an

Details Optically active compound having a .delta.-valerolactone ring an Optically active compound having a .delta.-valerolactone ring an

1995-01-23

1996-01-02

Tucker, Philip

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

549273, 549292, 546268, 544238, 544298, 544315, 544334, 544335, 544336, 544406, 544408, 544409, C09K 1934

Patent

active

054805805

ABSTRACT:
Optical active compounds which are chemically stable, are not colored, have a good optical stability, and which give a liquid crystal composition having a large spontaneous polarization when the compound is incorporated, are provided. The optical active compound have an asymmetric carbon atom fixed by a .delta.-valerolactone ring and the permanent dipole moment derived from the carboxylic group is fixed by the .delta.-valerolactone ring and two alkyl groups which can be regarded as a part of a measogen.

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Ferroelectric Liquid Crystals, J. Physique 36, L-69 (1975), R. B. Meyer et al.
J. Am. Chem. Soc., 103, 2151 (1981), T. Philip et al.
Synthesis of the Dideoxynucleosides ddC and CNT from Glutamic Acid, Ribonolactone, and Pyrimidine Bases, J. Org. Chem., 53, 4780-4786 (1988), D. L. Coffen et al.

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