| abstract |
(57) [Problem] To provide a phenyldioxane compound suitable for a liquid crystal medium. SOLUTION: Formula I-200 (Wherein R 1 represents one or two non-adjacent CH 2 groups An alkyl or alkenyl group having up to 16 C atoms which may be replaced by O-, -S-, -CO-O- or -O-CO-, Wherein Y is CF 3 , OCF 3 or OCF 2 H; L 1 and L 2 are each independently F or H, When L 1 is H, (However, in this case, L 2 is limited to F.) And o is 0. The phenyl dioxane represented by). |