| 摘要 |
4-(4-Alkyl or alk(enyl)oxy-(het)aryl-(het)aryl) linear 2E-alkenoates with at least one pyridin-2,5-diyl or pyrimidin-2,5-diyl group, are new. 4-(4-Alkyl or alk(enyl)oxy-(het)aryl-(het)aryl) linear 2E-alkenoates of formula (I), with at least one pyridin-2,5-diyl or pyrimidin-2,5-diyl group, are new: R<1> = linear 2-12 carbon (C) 1E-alkenyl; R<2> = 1-12 C alkyl or alkoxy or 2-12 C alkenyloxy; A<1>, A<2> = unsubstituted pyridin-2,5-diyl or pyrimidin-2,5-diyl in at least one case, otherwise unsubstituted or mono- or poly-halogen-substituted 1,4-phenylene Independent claims are also included for (1) liquid crystal (LC) mixtures containing 2 compounds, at least one of formula (I); and (2) electro-optical devices containing compound (I) or the LC mixture. |
