Selected Papers from SBLP 2007: The 11th Brazilian Symposium on Programming Languages.

Cyclohexylphenyl derivatives of the formula wherein X is -CH2-CH2-, -CH2-O-, -CH2-S-, -O-CH2- or -S-CH2-; R1 is alkyl of up to 8 carbon atoms; R2 is alkyl or alkoxy each of up to 8 carbon atoms, fluorine, chlorine, bromine or cyano; and R3 and R4 are both hydrogen or one is hydrogen and the other is fluorine, chlorine, bromine or cyano, with the proviso that R3 and R4 are both hydrogen when X is -CH2-CH2- or R2 is fluorine, chlorine, bromine or cyano, are valuable liquid crystalline compounds.