1,2-Difluornaphthalin-Derivate und ihre Verwendung in flüssigkristallinen Mischungen

3,4-Difluoronaphthalene derivs. of formula (I) are new: R (-M )a(-A )b(-M )c(-A )d(-M )e-B(-M )f(-A )g(-M )h (-A )i(-M )kR (I); B = 3,4-difluoro-naphthalene-2,6-diyl; R , R = (a) H, CN, F, Cl, CF3, CHF2, CH2F, OCF3, OCHF2 or OCH2F; (b) 1-20 C alkyl (opt. with an asymmetrical C atom), in which 1 or m...

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Bibliographische Detailangaben
Hauptverfasser:	FUSS, ROBERT WALTER, MANERO, JAVIER, HORNUNG, BARBARA
Format:	Patent
Sprache:	ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM ADHESIVES CHEMISTRY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DYES FREQUENCY-CHANGING HETEROCYCLIC COMPOUNDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC CHEMISTRY PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	3,4-Difluoronaphthalene derivs. of formula (I) are new: R (-M )a(-A )b(-M )c(-A )d(-M )e-B(-M )f(-A )g(-M )h (-A )i(-M )kR (I); B = 3,4-difluoro-naphthalene-2,6-diyl; R , R = (a) H, CN, F, Cl, CF3, CHF2, CH2F, OCF3, OCHF2 or OCH2F; (b) 1-20 C alkyl (opt. with an asymmetrical C atom), in which 1 or more CH2 gps. may be replaced by -O-, -S-, -CO-O-, -O-CO-, -O-CO-O-, -CO-, -CH=CH-, -C?=C, cyclopropan-1,2-diyl, -SiMe2-, 1,4-phenylene, trans-1,4-cyclohexylene or trans-1,3-cyclopentylene, without directly linked O and/or S atoms, and/or with 1 or more, F, Cl, Br, OR , -SCN, -OCN or N3 substit(s).; or (c) an (optically active or racemic) gp. of formulae (IIA-S): R = H; 1-16C alkyl (opt. with an asymmetrical C atom), in which 1 or more CH2 gps. may be replaced by -O- and/or -CH=CH-, without directly linked O atom, and/or with 1 or more F or Cl substit(s).; or R + R = -(CH2)4- or -(CH2)5- if attached to an oxirane, dioxolane, tetrahydrofuran, tetrahydropyran, butyrolactone or valerolactone system; Y = Cl, F or CN; Z = -CO-, or -CH2-; M - = -O-, -S-, -CO-, -CO-O-, -O-CO-, -O-CO-O-, -CO-S-, -CS-O-, -O-CS-, -S-CS-S-, -O-CS-O-, -S-CO-S-, -CS-, -CH2-O-, -O-CH2-, -S-CH2-, -CH=CH-, -C?=C-, -CH2-CH2-CO-O-, -O-CO-CH2-CH2- or a single bond; A = 1,4-phenylene, pyridin-2,5-diyl, naphthalen-2,6-diyl or bicyclo(2.2.2)-octan-1,4-diyl, opt. with 1 or more F, Cl and/or CN substit(s).; pyrazin-2,5-diyl, pyridazin-3,6-diyl, pyrimidin-2,5-diyl or thiophen-2,5-diyl, opt. with a or 2 F, Cl, and/or CN substits.; 1,3-thiazol-2,4- or -2,5-diyl or thiophen-2,4-diyl, opt. with one F, Cl and/or CN substit.; trans-1,4-cyclohexylene, opt. with 1 or 2 CN and/or Me substits.; (1,3,4)-thiadiazol-2,5-diyl; 1,3-dioxan-2,5-diyl; 1,3-dithian-2,5-diyl; piperazin-1,4- or -2,5-diyl; 1,3-dioxaborinan-2,5-diyl; or a B gp.; a,b,c,d,e,f,g,h,i,k = 0 or 1. Also claimed are liquid crystal (LC) mixts. contg. (I).