New chromane and chromene derivatives useful as components in liquid crystalline media and in liquid crystal display element or electrooptical display element

摘要

Chromane derivatives (A) and chromene derivatives (A1) are new. Chromane derivatives (A) of formulae (I and II) and chromene derivatives (A1) of formulae (III-VI) are new. R 1>a linear or branched 1-15C alkyl, 2-15C alkenyl (both optionally chiral, unsubstituted, substituted with CN, CF 3 or halo, where one or more CH 2-groups are replaced through -O-, -S-, -CO-, -CO-O-, -O-CO-, -O-CO-O-, -CH=CH-, -CH=CF-, -CF=CH-, -CF=CF-, -C?=C- or -cyclicbutane-), H or halo (F, Cl, Br or I); R 2>alkyl- or alkoxy with 1-15C atoms, alkenyl- or alkenyloxy with 2-15C atoms (all optionally substituted with F), H, F, Cl, NCS, CN or SF 5; A 1>, A 2>trans-1,4-cyclohexylene (where one or more non-adjacent CH 2-groups are replaced by -O- and/or -S-), 1,4-phenylene (where one or two CH-groups are replaced by N and one or more H atoms by F), 1,4-bicyclo(2,2,2)-octylene, piperidin-1,4-diyl, naphthalin-2,6-diyl, decahydronaphthalin-2,6-diyl, 1,2,3,4-tetrahydronaphthalin-2,6-diyl or 1,4-cyclohexenylene; Z 1>, Z 2>-O-, -CH 2O-, -OCH 2-, -CO-O-, -O-CO-, -CF 2O-, -OCF 2-, -CF 2CF 2-, -CH 2CF 2-, -CF 2CH 2-, -CH 2CF 2O-, -OCF 2CH 2-, -CH 2CH 2-, -CH=CH-, -CH=CF-, -CF=CH-, -CF=CF-, -CF=CF-CO-O-, -O-CO-CF=CF-, -C?=C- or a bond; L 1>-L 4>alkyl- or alkoxy with 1-15C, alkenyl- or alkenyloxy with 2-15C atoms (all optionally substituted with one or more F), H, F, Cl, NCS, CN, SF 5 (preferably H or F); m : 0-4 (preferably 0-2); and n : 1-4 (preferably 1-2). Provided that the sum of m and n is 1-4 (preferably 1-2). In formula (II): L 2>L 3>oxy-compounds of formula (a-f); and L 5>, L 6>H, F, Cl, CN or -(Z 2>-A 2>-) nR 2>. Provided that when L 5> and L 6> is H, F, Cl or CN, then m is 1-4 (preferably 1-2); and when L 5> and L 6> is -(Z 2>-A 2>-) nR 2>, then m and n is 0-4 and the sum of m and n is 1-4 (preferably 1-3). Independent claims are also included for: (1) liquid crystalline medium comprising at least two liquid crystalline components of (I-VI); (2) liquid crystal display element comprising liquid crystalline medium; and (3) electrooptical display element comprising liquid crystalline medium as dielectric. [Image] [Image] [Image] [Image].