Cyclohexylphenylpyrimidines, process for their preparation,...

Details Cyclohexylphenylpyrimidines, process for their preparation,... Cyclohexylphenylpyrimidines, process for their preparation,...

C - Chemistry, Metallurgy

07

D

C07D 239/24 (2006.01) C07D 239/34 (2006.01) C07F 7/10 (2006.01) C09K 19/34 (2006.01) C09K 19/40 (2006.01) G02F 1/05 (2006.01)

Patent

CA 2052279

1 HOE 90/F 288 Abstract of the disclosure Cyclohexylphenylpyrimidines, a process for their prepara- tion, and their use in liquid-crystalline mixtures Cyclohexylphenylpyrimidines of the formula (I) Image (I) in which R1 is straight-chain or branched, chiral or achiral alkyl or alkenyl having 2 to 16 carbon atoms, in which one or two nonadjacent -CH2- groups may be replaced by -O-, -S-, -CO-, -COO-, -OCO-, -Si(CH3)2- or -C(CH3)2-, and in which one or more hydrogen atoms of the alkyl or alkenyl radical may be replaced by fluorine atoms, and in which the terminal CH3 group of the alkyl may also be replaced by Image , R2 is straight-chain or branched, chiral or achiral alkyl having 1 to 10 carbon atoms, are particularly suitable components for ferroelectric liquid-crystal mixtures since they result in favorable properties, such as, for example, high contrast, when used in electrooptical switching and display devices.

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