Claims
- 1. A terphenyl derivative of formula (1): wherein R is a straight or branched alkyl group of 1-10 carbon atoms, and any methylene groups not adjacent each other in each alkyl group may be replaced by oxygen atoms; X is —F, —OCF3, —OCF2H, —CF3, —CF2H, or —CFH2; Y1, Y2, Y3, and Y4 independently are H or F, but at least two of Y1, Y2, Y3, and Y4 are F and Y5 and Y6 are F.
- 2. The terphenyl derivative according to claim 1 wherein Y1 and Y2 are F and Y3 and Y4 are H.
- 3. The terphenyl derivative according to claim 1 wherein Y1 and Y3 are F and Y2 and Y4 are H.
- 4. The terphenyl derivative according to claim 1 wherein Y3 and Y4 are F and Y1 and Y2 are H.
- 5. The terphenyl derivative according to claim 1 wherein Y1, Y2 and Y3 are F and Y4 is H.
- 6. The terphenyl derivative according to claim 1 wherein Y1, Y2, Y3 and Y4 are F.
- 7. The terphenyl derivative according to claim 1 wherein Y1═Y2═F, Y3═Y4═H and X═—OCF3 or —OCF2H.
- 8. The terphenyl derivative according to claim 1 wherein Y1═Y2═F, Y3═Y4═H and X═—CF3 or —CF2H.
- 9. The terphenyl derivative according to claim 1 wherein Y1═Y3═F, Y2═Y4═H, and X═—OCF3 or —OCF2H.
- 10. The terphenyl derivative according to claim 1 whiner Y3═Y4═F, Y1═Y2═H, and X═—OCF2H or —CF2H.
- 11. The terphenyl derivative according to claim 1 wherein Y1═Y3═F, Y4═H, and X═—OCF3 or —OCF2H.
- 12. The terphenyl derivative according to claim 1 wherein Y1═Y3═Y4═F, and Y2═H.
- 13. The terphenyl derivative according to claim 1 wherein Y1═Y2═Y3═Y4═F, and X═F, —CF3, —CF2H, or —OCF2H.
- 14. A liquid crystal composition comprising at least one of the terphenyl derivatives according to claim 1.
- 15. A liquid crystal composition comprising as a first component thereof at least one derivative selected from the terphenyl derivatives according to claim 1, and as a second component thereof at least one compound selected from the group consisting of the compounds represented by formula (2), (3), or (4) wherein R1 is an alkyl group of 1-10 carbon atoms, any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in the alkyl group may be substituted by fluorine atoms; X1 is F, Cl, —OCF3, —OCF2H, —CCF3, —CF2H, —CFH2, —OCF3CF2H, or —OCF2CFHCF3; L1 and L2 independently are H or F; Z4 and Z5 independently are a 1,2-ethylene group, a 1,4-butylene group, —COO—, —CF2O—, —OCF2—, —CH═CH—, or a covalent bond; ring B is trans-1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, or 1,4-phenylene where the hydrogen atoms may be substituted by fluorine atoms; ring C is trans-1,4-cyclohexylene or 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms.
- 16. A liquid crystal composition comprising as a first component thereof at least one compound selected from the compounds according to claim 1, and as a second component thereof at least one compound selected from the group consisting of the compounds of formula (5) or (6) wherein R2 and R3 independently are an alkyl group of 1-10 carbon atoms, and any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in the alkyl group may be substituted by fluorine atoms; X2 is —CN or —C≡C—CN; ring D is trans-1,4-cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; trans-1,4 cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; ring E is trans-1,4 cyclohexylene, 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms, or pyrimidine-2,5-diyl; ring F is trans-1,m4-cyclohexylene or 1,4-phenylene; Z6 is 1,2-ethylene, —COO—, or a covalent bond; L3, L4 and L5 independently are hydrogen or fluorine; b, c, and d independently are 0 or 1.
- 17. A liquid crystal composition comprising as a first component thereof at least one compound selected from the compounds according to claim 1, and as a second component thereof at least one compound selected from the group consisting of compounds represented by formula (2), (3), or (4); wherein R1 is an alkyl group of 1-10 carbon atoms, any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in the alkyl group may be substituted by fluorine atoms; X1 is F, Cl, —OCF3, —OCF2H, —CCF3, —CF2H, —CFH2, —OCF3CF2H, or —OCF2CFHCF3; L1 and L2 independently are H or F; Z4 and Z5 independently are a 1,2-ethylene group, a 1,4-butylene group, —COO—, —CF2O—, —OCF2—, CH═CH—, or a covalent bond; ring B is trans-1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, or 1,4-phenylene where the hydrogen atoms may be substituted by fluorine atoms; ring C is trans-1,4-cyclohexylene or 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms and as a third component thereof at least one compound selected from the group consisting of compounds of formula (7), (8), to (9); wherein R4 and R5 independently are an alkyl group of 1-10 carbon atoms, and any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in said alkyl group may be substituted by fluorine atoms; ring G, ring J, and ring I independently are trans-1,4-cyclohexylene, pyrimidine-2,5-diyl, or 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms; Z7 and Z8 are independently —C≡C—, —COO—, —CH2—CH2—, —CH═CH— or a covalent bond.
- 18. A liquid crystal composition comprising as a first component thereof at least one compound selected from the compounds according to claim 1;as a second component thereof at least one compound selected from the group consisting of compounds represented by formula (5) or (6); wherein R2 and R3 independently are an alkyl group of 1-10 carbon atoms, and any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in the alkyl group may be substituted by fluorine atoms; X2 is —CN or —C≡C—CN; ring D is trans-1,4-cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; trans-1,4 cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; ring E is trans-1,4 cyclohexylene, 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms, or pyrimidine-2,5-diyl; ring F is trans-1,m4-cyclohexylene or 1,4-phenylene; Z6 is 1,2-ethylene, —COO—, or a covalent bond; L3, L4 and L5 independently are hydrogen or fluorine; b, c, and d independently are 0 or 1 as a third component thereof at least one compound selected from the group consisting of the compounds of formula (7), (8), or (9) wherein R4 and R5 independently are an alkyl group of 1-10 carbon atoms, and any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in said alkyl group may be substituted by fluorine atoms; ring G, ring J, and ring I independently are trans-1,4-cyclohexylene, pyrimidine-2,5-diyl, or 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms; Z7 and Z8 are independently —C≡C—, —COO—, —CH2—CH2—, —CH═CH— or a covalent bond.
- 19. A liquid crystal composition comprising as a first component thereof at least one compound selected from the compounds according to claim 1;as a second component thereof at least one compound selected from the group consisting of the compounds of formula (2), (3), or (4); wherein R1 is an alkyl group of 1-10 carbon atoms, any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in the alkyl group may be substituted by fluorine atoms; X1 is F, Cl, —OCF3, —OCF2H, —CCF3, —CF2H, —CFH2, —OCF3CF2H, or —OCF2CFHCF3; L1 and L2 independently are H or F; Z4 and Z5 independently are a 1,2-ethylene group, a 1,4-butylene group, —COO—, —CF2O—, —OCF2—, —CH═CH—, or a covalent bond; ring B is trans-1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, or 1,4-phenylene where the hydrogen atoms may be substituted by fluorine atoms; ring C is trans-1,4-cyclohexylene or 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms as a third component thereof at least one compound selected from the group consisting of the compounds of formula (5) or (6); wherein R2 and R3 independently are an alkyl group of 1-10 carbon atoms, and any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in the alkyl group may be substituted by fluorine atoms; X2 is —CN or —C≡C—CN; ring D is trans-1,4-cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; trans-1,4 cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; ring E is trans-1,4 cyclohexylene, 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms, or pyrimidine-2,5-diyl; ring F is trans-1,m4-cyclohexylene or 1,4-phenylene; Z6 is 1,2-ethylene, —COO—, or a covalent bond; L3, L4 and L5 independently are hydrogen or fluorine; b, c, and d independently are 0 or 1 as a fourth component thereof at least one compound selected from the group consisting of the compounds of formula (7), (8), or (9) wherein R4 and R5 independently are an alkyl group of 1-10 carbon atoms, and any nonadjacent methylene groups in said alkyl group may be substituted by oxygen atoms of —CH═CH—, and any hydrogen atoms in said alkyl group may be substituted by fluorine atoms; ring G, ring J, and ring I independently are trans-1,4-cyclohexylene, pyrimidine-2,5-diyl, or 1,4-phenylene wherein the hydrogen atoms may be substituted by fluorine atoms; Z7 and Z8 are independently —C≡C—, —COO—, —CH2—CH2—, —CH═CH— or a covalent bond.
- 20. A liquid crystal composition comprising the liquid crystal composition according to claim 14 and at least one optically active compound.
- 21. A liquid crystal display device made using the liquid crystal composition according to claim 14.
- 22. A liquid crystal display device made using the liquid crystal composition according to claim 20.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8-272856 |
Sep 1996 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
The present application is a divisional of Ser. No. 09/269,287, filed Mar. 25, 1999, now U.S. Pat. No. 6,344,247 B1, which is a 371 of PCT/JP97/03402 filed Sep. 25, 1997, the entire contents of which are hereby incorporated by reference.
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