5-OXY-2-PHENYLPYRIMIDINE UND FLUESSIGKRISTALLINES MEDIUM

摘要

Described are 5-oxy-2-phenylazines of the formula (I) in which R is an alkyl, alkenyl or oxalkyl group with up to 12 C-atoms, A is an unsubstituted or fluorine-substituted 1,4-phenylene, trans-1,4-cyclohexylene or 1,3-cyclobutylene group, Z' is -CH2CH2-, -CH2O-, OCH2-, -CO-O- or -O-CO- or a single bond, Q is -CH2- or -CO-, X is N or CH, E is -CH2CH2-, -C=C- or a single bond, n is 0 or 1, m is 0,1 or (when n = 0) 2, L<1>, L<2> and L<3> are each, independently of each other, H or F, and Y is -CN, -NCS, F, Cl, -CF3, -CHF2, -OCHF2 or -OCF3, which are suitable for use as components of mesomorphous media.