Optically active alcohol and derivatives thereof, liquid crystal

Details Optically active alcohol and derivatives thereof, liquid crystal Optically active alcohol and derivatives thereof, liquid crystal

1994-02-24

1994-11-22

Wu:, Shean

Compositions

Liquid crystal compositions

25229964, 25229965, 25229966, 25229967, 560 59, 560 61, 560 64, 560 65, 568631, 568642, 568644, 568645, C09K 1952, C09K 1912, C07C 6976, C07C 4302

Patent

active

053666569

ABSTRACT:
Optically active compounds of general formulae ##STR1## wherein A is O or S, R.sub.1 is a hydrogen atom, an alkyl group having 1-22 carbon atoms, a hydroxy containing alkyl group, para-alkyl substituted phenyl, para-alkyl substituted biphenyl, hydroxyphenyl, hydroxybiphenyl or tosyl; R.sub.2 is an alkyl group having 2-8 carbon atoms; m is an integer of 0-5, n is 0 or 1, where when m=0, n is not 1; p is 0 or 1; q is 0 or 1; D and E are independently H or a halogen atom; R.sub.3 is a linear alkyl group having 1 to 22 carbon atoms; and * and ** are asymmetric centers.

REFERENCES:
patent: 4812259 (1989-03-01), Yoshinaga et al.
patent: 4961875 (1990-10-01), Ohno et al.
Booth, C. J. et al. "New Chiral Liquid Crystals Derived from (R)-2-(4-Hydroxyphenoxy) propan-1-ol", The 14th International Liquid Crystal Conference, Jun. 21-26, 1992.
Booth, C. J. et al. "Fluoro-Substituted Chiral Liquid Crystals Derived From (R)-2-(4-Hydroxyphenoxyl) propan-1-ol", The 14th International Liquid Crystal Conference, Jun. 21-26, 1992.
Rappaport, A. G. et al. "X-Ray Scattering Studies of a Large Electroclinic Effect Material", The 14th International Liquid Crystal Conference, Jun. 21-26, 1992.
Walba, D. M. et al. "Electronic Nonlinear Optics in Ferroelectric Liquid Crystals", The 14th International Liquid Crystal Conference, Jun. 21-26, 1992.
Lackner, A. M., et al. "Properties of new ferroelectric materials", Liquid Crystals, 5(4):1259-1267 (1989).
Otterhold, B. et al. "Synthesis and Electro-Optical Properties of Some Ferroelectric Liquid Crystals Derived from Lactic Acid" mol. Cryst. Liq. Cryst. 146:189-216 (1987).

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