Imidazothiazoles

Details Imidazothiazoles Imidazothiazoles

1997-03-26

1998-12-22

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229962, 25229963, 25229966, 25229967, 548153, 548154, 549455, 549369, C09K 1934, C09K 1932, C09K 1912, C07D51502

Patent

active

058514252

ABSTRACT:
Compounds of the general formula ##STR1## have a pronounced tendency to form liquid crystalline S (smectic) phases. Thus, optically inactive compounds of the formula I also have a tilted smectic phase, in particular an S.sub.C phase, in addition to a nematic phase. In contrast, many optically active compounds of the formula I additionally have, inter alia, a tilted smectic chiral phase, in particular a chiral S.sub.C phase, in addition to a cholesteric phase. The stated compounds are therefore particularly suitable as components and as dopants, respectively, for the preparation of a very wide range of liquid crystalline mixtures. The class of compounds comprising compounds of the general formula I offers a broad range of novel components and mixtures for optimization and modification of liquid crystalline mixtures.

REFERENCES:
ANdreani et al., Euro. J. Med Chem. 19 (3), pp. 219-222, 1984.
J. Chem, Soc., Perkin Trans. 1 (4) 856-60, 1991. Least One Nitro Or Nitroso Group",Arch. Pharm, Chem., Sci. Ed. 1987.
"Synthesis and Mesomorphic Properties of 2, 5-Di-(4-N-Alkyloxphenyl) Cardiotonic Agents" Eur. J. Med. Chem. Chim. Ther., 1984-19.

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