Conjugated enyne derivative and liquid crystal composition

Details Conjugated enyne derivative and liquid crystal composition Conjugated enyne derivative and liquid crystal composition

1993-11-10

1994-12-06

Wu, Shean

Compositions

Liquid crystal compositions

28229961, 28229963, 28229964, 28229965, 28229966, 28229967, 544298, 544335, 546250, 549369, 568626, 560 8, C09K 1952, C09K 1934, C07C 6976, C07C 4302

Patent

active

053708199

ABSTRACT:
A novel, conjugated enyne compound expressed by the following formula (I), which has superior characteristics as an L.C. material and is stable under a usually used environment, and a L.C. composition containing the same are provided: ##STR1## wherein A is 1,4-phenylene or 1,4-cyclohexylene; B, C and D are 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, pyridine-2,5-diyl or 1,3-pyrimidine-2,5-diyl; L and M are covalent bond, 1,2-ethylene, oxycarbonyl, carbonyloxy, 1,2-ethenylene, 1,2-ethynylene, oxymethylene or methyleneoxy; n, m and l are 0 or 1; X and Z are H or F; R is fluoroalkyl, alkyl, alkoxy, alkoxyalkyl or alkenyl; Y is alkyl, alkoxy, cyano, halogen, cyanate, alkyl or alkoxy having at least one H replaced by halogen; when n is 0, L is covalent bond; when m or n is 0, M is covalent bond; and m, n and l are not simultaneously 0,

REFERENCES:
CA 86(1):5031w.
CA 106(21):175799b.
CA 111(1):7000u.

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