Alkanoyl ester compounds and their intermediates and method of p

Details Alkanoyl ester compounds and their intermediates and method of p Alkanoyl ester compounds and their intermediates and method of p

1991-10-18

1992-08-11

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229967, 560 55, 560 59, 560 61, 560 64, 560 73, 560102, 560106, 560107, 560108, 560109, C09K 1912, C09K 1920, C07C 6976

Patent

active

051376539

ABSTRACT:
This invention provides a novel alkanoyl ester compound represented by general formula (I): ##STR1## (wherein A is of --, --O--, ##STR2## B is ##STR3## l and m are 1 or 2 provided that both are not simultaneously 2, k and n are an integer of 1 or more, respectively, provided that k>n, and R is an alkyl group), a liquid crystal composition containing this compound, a novel alkanoylphenyl compound or a novel alkanoylbiphenyl compound as an intermediate for the production of the above compound, and a method of producing the same. These novel alkanoyl ester compounds are excellent in the stability against light and the like and can take a liquid crystal state at a wide temperature range. Particularly, these compounds form liquid crystals of ferroelectricity having a large spontaneous polarization and a fast response rate by introducing an optically active group into the compound, so that they develop a very excellent effect as a starting material for optoelectronics and its related elements.

REFERENCES:
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patent: 5049308 (1991-09-01), Mitsuhashi et al.
M. B. Hocking et al., "Steric and pH Effects on the Rate of Dakin Oxidation of Acylphenols", Journal of Organic Chemistry, vol. 47, No. 22, pp. 4208-4215, Oct. 22, 1982.
Y. Kamitori et al., "Sodium Sulfide as a Selective Reducing Reagent for Aldehydes to Alcohols. Use of Alumina as an Effective Catalyst", Chemistry Letters, No. 2, pp. 253-254, 1985.

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