摘要:
A liquid crystal compound, a liquid crystal composition, and a liquid crystal electric optical device having a low rotational viscosity (γ1) and appropriate elastic constants. A fluorine-containing liquid crystal compound represented by formula (1). R1-(A1-Z1)a-(A2-Z2)b-(A3-Z3)c-A4-(CH2)n-CF═CF—R2 (1), R1 is a hydrogen atom, a halogen atom, or an alkyl group, R2 is a halogen atom or an alkyl group that may be halogen-substituted or which may include a (thio)ether group, A1 to A4 may be a phenylene group or a cyclohexylene group that may be halogen-substituted or which may include a (thio)ether group, Z1 to Z3 are a single bond, —O—, —S—, or a divalent aliphatic hydrocarbon group that may be halogen-substituted or which may include a (thio)ether group. n is an integer from 0 to 3, and a, b, and c are 0 or 1, provided that a+b+c is 1 or greater.
摘要:
A liquid crystal compound, a liquid crystal composition, and a liquid crystal electric optical device having a low rotational viscosity (γ1) and appropriate elastic constants. A fluorine-containing liquid crystal compound represented by formula (1). R1-(A1-Z1)a-(A2-Z2)b-(A3-Z3)c-A4-(CH2)n-CF═CF—R2 (1), R1 is a hydrogen atom, a halogen atom, or an alkyl group, R2 is a halogen atom or an alkyl group that may be halogen-substituted or which may include a (thio)ether group, A1 to A4 may be a phenylene group or a cyclohexylene group that may be halogen-substituted or which may include a (thio)ether group, Z1 to Z3 are a single bond, —O—, —S—, or a divalent aliphatic hydrocarbon group that may be halogen-substituted or which may include a (thio)ether group. n is an integer from 0 to 3, and a, b, and c are 0 or 1, provided that a+b+c is 1 or greater.
摘要:
Disclosed is a liquid crystal composition suitable for producing a liquid crystal electrooptical element which can be driven at a low voltage in a wide temperature range and has high display quality. Also disclosed is a liquid crystal electrooptical element produced by using the liquid crystal composition. Further disclosed is a liquid crystal compound represented by the formula [R1-(A1)a-Z1-(A2)b-Z2-(A7)e-Z5-A3—CF═CFCF2O-A4-Z3-(A5)c-Z4-(A6)d-R2]. In the formula, R1 and R2 independently represent a hydrogen atom, a halogen atom, —CN, —NCS, —SF5, or an alkyl group containing 1 to 18 carbon atoms; A1, A2, A3, A4, A5, A6 and A7 independently represent trans-1,4-cyclohexylene group, 1,4-cyclohexenylene group, 1,3-cyclobutylene group, 1,2-cyclopropylene group, naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group, or 1,4-phenylene group; Z1, Z2, Z3, Z4, and Z5 independently represent a single bond, an alkylene group containing 1 to 4 carbon atoms; and a, b, c, d, and e independently represent 0 or 1 with the proviso that 0≦a+b+c+d+e≦3.
摘要翻译:公开了一种液晶组合物,其适用于制造可在宽温度范围内以低电压驱动并具有高显示质量的液晶电光元件。 还公开了通过使用液晶组合物制造的液晶电光元件。 另外公开了由式[R1-(A1)a-Z1-(A2)b-Z2-(A7)e-Z5-A3-CF = CFCF2O-A4-Z3-(A5)c- Z4-(A6)d-R2]。 在该式中,R 1和R 2独立地表示氢原子,卤素原子,-CN,-NCS,-SF 5或含有1至18个碳原子的烷基; A1,A2,A3,A4,A5,A6和A7独立地表示反式-1,4-亚环己基,1,4-亚环己基,1,3-环亚丁基,1,2-亚环丙基,萘-2,6 - 二基,1,2,3,4-四氢化萘-2,6-二基,十氢萘-2,6-二基或1,4-亚苯基; Z 1,Z 2,Z 3,Z 4和Z 5独立地表示单键,含有1至4个碳原子的亚烷基; 并且a,b,c,d和e独立地表示0或1,条件是0和nlE; a + b + c + d + e≦̸ 3。
摘要:
Disclosed is a liquid crystal composition suitable for producing a liquid crystal electrooptical element which can be driven at a low voltage in a wide temperature range and has high display quality. Also disclosed is a liquid crystal electrooptical element produced by using the liquid crystal composition. Further disclosed is a liquid crystal compound useful in preparing this composition.
摘要:
Disclosed is a liquid crystal composition suitable for producing a liquid crystal electrooptical element which can be driven at a low voltage in a wide temperature range and has high display quality. Also disclosed is a liquid crystal electrooptical element produced by using the liquid crystal composition. Further disclosed is a liquid crystal compound represented by the formula [R1-(A1)a-Z1-(A2)b-Z2-(A7)e-Z5-A3-CF═CFCF2O-A4-Z3-(A5)c-Z4-(A6)d-R2]. In the formula, R1 and R2 independently represent a hydrogen atom, a halogen atom, —CN, —NCS, —SF5, or an alkyl group containing 1 to 18 carbon atoms; A1, A2, A3, A4, A5, A6 and A7 independently represent trans-1,4-cyclohexylene group, 1,4-cyclohexenylene group, 1,3-cyclobutylene group, 1,2-cyclopropylene group, naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group, or 1,4-phenylene group; Z1, Z2, Z3, Z4, and Z5 independently represent a single bond, an alkylene group containing 1 to 4 carbon atoms; and a, b, c, d, and e independently represent 0 or 1 with the proviso that 0≦a+b+c+d+e≦3.
摘要翻译:公开了一种液晶组合物,其适用于制造可在宽温度范围内以低电压驱动并具有高显示质量的液晶电光元件。 还公开了通过使用液晶组合物制造的液晶电光元件。 另外公开了由式[R1-(A1)a-Z1-(A2)b-Z2-(A7)e-Z5-A3-CF = CFCF2O-A4-Z3-(A5)c- Z4-(A6)d-R2]。 在该式中,R 1和R 2独立地表示氢原子,卤素原子,-CN,-NCS,-SF 5或含有1至18个碳原子的烷基; A1,A2,A3,A4,A5,A6和A7独立地表示反式-1,4-亚环己基,1,4-亚环己基,1,3-环亚丁基,1,2-亚环丙基,萘-2,6 - 二基,1,2,3,4-四氢化萘-2,6-二基,十氢萘-2,6-二基或1,4-亚苯基; Z 1,Z 2,Z 3,Z 4和Z 5独立地表示单键,含有1至4个碳原子的亚烷基; 并且a,b,c,d和e独立地表示0或1,条件是0和nlE; a + b + c + d + e≦̸ 3。
摘要:
Disclosed is a liquid crystal composition suitable for producing a liquid crystal electrooptical element which can be driven at a low voltage in a wide temperature range and has high display quality. Also disclosed is a liquid crystal electrooptical element produced by using the liquid crystal composition. Further disclosed is a liquid crystal compound useful in preparing this composition.
摘要:
The present invention is concerned with a novel process for the preparation of 1-(3,5-bis(trifluoromethyl)phenyl)ethan-1-one (CAS 30071-93-3). This compound is useful as an intermediate in the synthesis of therapeutic agents.
摘要:
A method for producing an optically active 1-substituted 2-propanol of the following formula 1, which comprises reacting a hydroxy aromatic compound of the following formula 2 with an optically active propylene oxide in the presence of a catalyst: AOH Formula 2 CH3C*H(OH)CH2OA Formula 1 wherein A is a univalent aromatic group, and C* is an asymmetric carbon atom.
摘要:
A novel prostaglandin I.sub.2 derivative selected from a prostaglandin I.sub.2 having a halogen atom on the carbon atom corresponding to the 7-position of natural prostaglandin I.sub.2 and having a cycloalkylene group in the .alpha.-chain, and its esters and salts.
摘要:
A 6-fluoroprostaglandin having the formula: ##STR1## wherein A is a carbonyl group or a hydroxymethylene group, R.sup.1 is a substituted or unsubstituted C.sub.1 -C.sub.10 alkyl group or a substituted or unsubstituted 5- or 6-membered cycloalkyl group, R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.10 alkyl group, each of R.sup.3 and R.sup.4 which may be the same or different is a hydrogen atom or a protecting group, R.sup.5 is a hydrogen atom or a hydroxyl group, and is a single bond or a double bond, and its salt when R.sup.2 is a hydrogen atom.