Patent ID: 6254941
Filing Date: 2001-07-03
Classification: C07C,C09K

Abstract:
A liquid crystalline compound represented by formula (1): ##STR40##wherein R represents an alkyl, alkoxy or alkoxyalkyl group of 2-20 carbon atoms, and in each group, and one hydrogen atom is replaced by a fluorine atom; X is a halogen atom or --CF.sub.3 --, --CF.sub.2 H, --CFH.sub.2, --OCF.sub.3, and --OCF.sub.2 H; Z.sub.1, Z.sub.2 and Z.sub.3, each independently, represents --(CH.sub.2).sub.2 --, --(CH.sub.2).sub.4 --, --CH.sub.2 O--, --OCH.sub.2 --, --(CH.sub.2).sub.3 O--, --O(CH.sub.2, .sub.3 -- or covalent bond; Y.sub.1, Y.sub.3, Y.sub.5, Y.sub.7, Y.sub.9, Y.sub.11, Y.sub.13 and Y.sub.15 are hydrogen atoms, and Y.sub.2, Y.sub.4, Y.sub.6, Y.sub.8, Y.sub.10, Y.sub.12, Y.sub.14 and Y.sub.16 each independently represent hydrogen atoms or fluorine atoms, but at least two of Y.sub.2, Y.sub.4, Y.sub.6, Y.sub.8, Y.sub.10, Y.sub.12, Y.sub.14 and Y.sub.16 are fluorine atoms; m represents 0 or 1, and any atom constituting the compound may be replaced by an isotope thereof.