Patent ID: 6348244
Filing Date: 2002-02-19
Classification: C07C,C07D,C09K

Abstract:
A liquid crystalline compound expressed by the general formula (1) wherein Ra and Rb each independently represent a straight chain or branched alkyl group or alkoxy group having 1 to 10 carbon atoms, or a straight or branched alkenyl group or alkynyl group having 2 to 10 carbon atoms; ring A1 represents cyclohexane-1,4-diyl in which ring not-adjacent any methylene group may be replaced by â€”Oâ€”; ring A2 represents 2,3-difluoro-1,4-phenylene in which phenylene hydrogen atoms at 5-position and 6-position may each independently be replaced by fluorine atoms but there is not a case wherein both of the hydrogen atoms are simultaneously replaced; Z1 and Z2 each independently represent single bond or â€”CH2CH2â€”; Xa, Xb, Xc, and Xd each independently represent hydrogen atom, fluorine atom, or chlorine atom, but at least one of Xa, Xb, Xc, and Xd is fluorine atom or chlorine atom; and any atom which constitutes the compound may be replaced by its isotope.