Heterocyclic compounds

Details Heterocyclic compounds Heterocyclic compounds

1980-01-29

1981-06-16

Gron, Teddy S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

252408, 350350R, 544335, 25229961, C09K 334, G02F 113, C07D23926

Patent

active

042739292

ABSTRACT:
Pyrimidine derivatives of the formula ##STR1## wherein at least one of rings A and B is a trans-1,4-disubstituted cyclohexane ring and the other, optionally, may be aromatic and R is straight-chain alkyl or alkoxy of 1 to 10 carbon atoms or a branched-chain alkyl group of the formulas C.sub.2 H.sub.5 --CH(CH.sub.3)--(CH.sub.2).sub.n --wherein n is 1, 2 or 3, are described. Processes for the preparation of the compounds of formula I as well as their uses in liquid crystalline mixtures are also described.

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Cox, R. J., Mol. Cryst. Liq. Cryst., vol. 55, pp. 1-32 (1979).
Constant, J., et al., "Photostable Anthraquinone Pleochroic Dyes", presented at 7th Int. L.C. Conf., Bordeaux, France (Aug. 1978).
Demus, D., et al., Mol. Cryst. Liq. Cryst., vol. 15, pp. 161-174 (1971).
Gray, G. W., et al., Mol. Cryst. Liq. Cryst., vol. 53, pp. 147-166 (1979).

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