3E-cyclohexylalkoxy derivatives

Details 3E-cyclohexylalkoxy derivatives 3E-cyclohexylalkoxy derivatives

1990-03-02

1991-07-16

Stoll, Robert L.

Compositions

Liquid crystal compositions

25229961, 25229963, 544239, 544315, 544408, 549 21, 549 28, 549416, 549421, 546266, 546343, 568579, 568626, 568659, 568664, C09K 1930, C07D40100, C07D40500, C07D49100

Patent

active

050323121

ABSTRACT:
Compounds of the formula ##STR1## wherein R.sup.1 denotes a group R.sup.3 or R.sup.3 --A.sup.4 --Z.sup.3 -- and R.sup.2 denotes a group R.sup.4 or --Z.sup.4 --A.sup.5 --R.sup.4 ; m and n each individually stand for the number 0 or 1; A.sup.1, A.sup.2, A.sup.3, A.sup.4 and A.sup.5 each independently represent unsubstituted or halogen-, cyano- and/or methyl-substituted 1,4-phenylene in which optionally 1 CH group or 2 CH groups is/are replaced by nitrogen, trans-1,4-cyclohexylene in which optionally 2 non-adjacent methylene groups are replaced by oxygen and/or sulphur, 1-cyano-trans-1,4-cyclohexylene, bicyclo[2.2.2]octane-1,4-diyl, naphthalene-2,6-diyl, tetralin-2,6-diyl or trans-decalin-2,6-diyl; Z.sup.1, Z.sup.2, Z.sup.3 and Z.sup.4 each independently signify a single covalent bond, --COO--, --OOC--, --CH.sub.2 O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2, --C.tbd.C--, --(CH.sub.2).sub.3 O--, --O(CH.sub.2).sub.3 -- or the trans form of --CH.dbd.CH--CH.sub.2 O-- or --OCH.sub.2 --CH.dbd.CH--; R.sup.3 and R.sup.4 each independently denote halogen, cyano, --NCS, --CF.sub.3, --OCF.sub.3 or alkyl in which optionally one <CH--CH> is replaced by <C.dbd.C> and/or optionally one methylene group or two non-adjacent methylene groups is/are replaced by --O--, --COO-- and/or --OOC-- and/or optionally one methylene group is replaced by --CHX--; and X signifies halogen, cyano or methyl,
as well as liquid crystalline mixtures and their use for electro-optical purposes.

REFERENCES:
patent: 3840529 (1974-10-01), Maruyama et al.
patent: 4035056 (1977-07-01), Coates et al.
patent: 4627933 (1986-12-01), Eidenschink et al.
patent: 4891491 (1990-01-01), Hoelderich et al.
Derwent Abstract 86-252836/39.
Japanese Abstact J6 2286-941-A, Dec. 1987, "4-Substd.-Cyclohexyl Crotyl Ether Deriv. Used For Nematic LC cpds. Can Be Obtd. From . . . ".
Japanese Abstract J6 2286-942-A, Dec. 1987, "New 4-Substd. Phenyl:Crotyl:Ether Deriv.-Used In Electro-Optical Devices, Has High N-1 Points and Wide Drive Temp. . . . ".
Japanese Abstract J6 2286-943-A, Dec. 1987, "4-Substd. Biophenyl Crotyl Ether Deriv.-Used For New Nematic Liq. Crystal Cpds., for Electro:Optical Display . . . ".

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