133261-24-2Relevant articles and documents
Trifluoromethylcyclohexane derivatives
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, (2008/06/13)
Disclosed are trifluoromethylcyclohexane derivatives of the formula I STR1 wherein R is an alkyl or alkenyl radical having up to 18 C atoms which is unsubstituted or substituted by CN or by at least one halogen, and in which one or more non-adjacent CH2 groups may be replaced by a radical selected from the group comprising --O--, --S--, --CO--, --O--CO--, --CO--O-- and --C C--, A1 and A2 are each, independently of one another, a) a 1,4-phenylene radical, in which one or two CH groups may be replaced by N, b) a 1,4-cyclohexylene radical, in which one or two non-adjacent CH2 groups may be replaced by --O-- or --S--, c) a 1,4-cyclohexenylene, piperidine-1,4-diyl, 1,4-bicyclo[2,2,2]-octylene or naphthalene-2,6-diyl radical, it being possible for the radicals a) and b) to be monosubstituted or polysubstituted by halogen atoms or cyano and/or methyl groups, STR2 Z1 and Z2 are each, independently of one another, --CO--O--, --O--CH--, --CH2 CH2 --, --CH(CN)--CH2 --, --CH2 --CH(CN)--, --CH=CH--, --OCH 2 --, --CH2 O--, --CH=N--, --N=CH--, --NO=N--, --N=NO--, --N=N-- or a single bond, and o is 0, 1 or 2. These compounds can be used as components of liquid-crystalline media for electrooptical display elements, in particular for matrix liquid-crystal displays.
