Ferroelectric SmC liquid crystal composition which comprises pyr

Details Ferroelectric SmC liquid crystal composition which comprises pyr Ferroelectric SmC liquid crystal composition which comprises pyr

1987-09-01

1990-12-25

Lee, Mary C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

514256, 514269, 544298, 544335, C07D23926, C09K 334

Patent

active

049800825

ABSTRACT:
This invention relates to new optically active pyrimidinylphenyl ester compounds, having a liquid crystal phase of cholesteric and/or smectic C* phase, of the formula: ##STR1## wherein R* represents an optically-active alkyl group having an asymmetric carbon atom which is ##STR2## where R.sup.0 is a straight chain alkyl group of 2 to 6 carbon atoms, R.sup.1 is a straight chain alkyl group of 1 to 5 carbon atoms, R.sup.2 is a straight chain alkyl group of 1 to 2 carbon atoms, R.sup.3 is a straight chain alkyl group of 1 to 6 carbon atoms and n is 0 or 1, R presents a straight-chain alkyl group of 7 or 8 carbon atoms or a straight-chain alkoxy group of 7 or 8 carbon atoms and A represents ##STR3## or --O--.

REFERENCES:
patent: 3997536 (1976-12-01), Boller et al.
patent: 4311610 (1982-01-01), Zaschke et al.
patent: 4462923 (1984-07-01), Boller et al.
patent: 4725688 (1988-02-01), Taquchi
March, Advanced Organic Chemistry, 1979, pp. 86-89.

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