| 摘要 |
To provide a liquid crystal compound satisfying at least one physical property such as high stability to light, a high clearing point, low minimum temperature of a liquid-crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant, excellent compatibility with other liquid crystal compounds. The compound is represented by formula (1-1):;;for example, R is alkyl having 1 to 10 carbons or alkoxy having 1 to 9 carbons, rings A1 to A3 are 1,4-cyclohexylene, 1,4-phenylene, or 1,4-phenylene in which at least one hydrogen is replaced by halogen; X is halogen, —CF3 or —OCF3; l is 1, and m, n is 0 or 1; W1 is a group represented by formula (1a) or (1b);;;W2 is a group represented by formula (1c) or (1d);;;Y1 to Y2 are hydrogen, Y3 to Y5 and L1 to L5 are fluorine. |
| 主权项 |
1. A compound represented by formula (1-1):wherein, in formula (1-1),
R is hydrogen or alkyl having 1 to 10 carbons, and in the alkyl, at least one of —CH2— may be replaced by —O— or —S—, at least one of —(CH2)2— may be replaced by —CH═CH—, and in the groups, at least one of hydrogen may be replaced by halogen; ring A1, ring A2 and ring A3 are independently 1,4-cyclohexylene, 1,4-cyclohexenylene, tetrahydropyran-2,5-diyl, 1,3-dioxane-2,5-diyl, 2,6,7-trioxabicyclo[2.2.2]octane-1,4-diyl, pyrimidine-2,5-diyl, pyridine-2,5-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, 1,4-phenylene, or 1,4-phenylene in which at least one of hydrogen is replaced by halogen; W1 is a group represented by formula (1a) or formula (1b);wherein, in formula (1a) and formula (1b),
Y1 and Y2 are independently hydrogen, chlorine or fluorine, Y3, Y4 and Y5 are independently hydrogen, fluorine or chlorine, and at least two of Y3, Y4 and Y5 is fluorine or chlorine; andin formula (1-1),
W2 is a group represented by formula (1c) or formula (1d);wherein, in formula (1c) and formula (1d),
L1, L2, L3, L4 and L5 are independently hydrogen, fluorine or chlorine; andin formula (1-1),
X is halogen, —C≡N, —N═C═S, —SF5, —CF3, —CF2H, —CFH2, —OCF3, —OCF2H, —OCFH2 or alkyl having 1 to 10 carbons, and in the alkyl, at least one of —CH2— may be replaced by —O— or —S—, at least one of —(CH2)2— may be replace by CH═CH—, and in the groups, at least one of hydrogen may be replaced by halogen; and l, m and n are 0 or 1, and a sum of l, m and n is 0, 1 or 2; in which, when a sum of l and m is 1 and n is 0, at least one of W1 and W2 is a group represented by formula (1b) or formula (1d), or at least one of I piece of ring A1 and m pieces of ring A2 is 1,4-cyclohexylene, 1,4-cyclohexenylene, tetrahydropyran-2,5-diyl, 1,3-dioxane-2,5-diyl, 2,6,7-trioxabicyclo[2.2.2]octane-1,4-diyl, pyrimidine-2,5-diyl, pyridine-2,5-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, or 1,4-phenylene in which at least one of hydrogen is replaced by halogen. |
