摘要:
To provide a liquid crystal compound, a dicyclohexylethylene derivative, which has a wide liquid crystal phase temperaturerange, a low viscosity, a large Δ⊂ value, a high stability, and an excellent compatibility with other liquid crystal compounds. A dicyclohexylethylene derivative represented by general formula (I), wherein R represents C1-C10 linear alkyl; and X represents fluorine or trifluoromethyl. This compound can widen the working range of a liquid crystal display element because of its high NI point, can improve the response speed of the display element because of its low viscosity, and can lower the voltage for driving the display element because of its high positive Δ⊂ value. Furthermore, it is so stable against changes in environmental factors that it can be used in various liquid crystal display elements of, for example, active matrix drive type using TFT.
摘要:
Vinylenverbindungen der Formel I, worin R, A 1 , Z 1 , X, L 1 , L 2 und m die in Anspruch 1 angegebene Bedeutung haben, eignen sich als Komponenten flüssigkristalliner Medien.
摘要:
To provide a liquid crystal compound, a dicyclohexylethylene derivative, which has a wide liquid crystal phase temperaturerange, a low viscosity, a large Δε value, a high stability, and an excellent compatibility with other liquid crystal compounds. A dicyclohexylethylene derivative represented by general formula (I), wherein R represents C₁-C₁₀ linear alkyl; and X represents fluorine or trifluoromethyl. This compound can widen the working range of a liquid crystal display element because of its high NI point, can improve the response speed of the display element because of its low viscosity, and can lower the voltage for driving the display element because of its high positive Δε value. Furthermore, it is so stable against changes in environmental factors that it can be used in various liquid crystal display elements of, for example, active matrix drive type using TFT.
摘要:
A novel liquid crystal material having an alkenyl group at the end of the molecule, and having a low viscosity, and when the compound is added, being able to reduce the threshold voltage of the resulting display element, is provided, the compound being expressed by the formula (I),
wherein X is a F atom, a trifluoromethyl group, a trifluoromethoxy group or a difluoromethoxy group, -A- is 1,4-cyclohexylene or 1,4-phenylene, -B- is 1,4-cyclohexylene, l is 0, 1 or 2, m is 0, 1 or 2, l+m≧1, Z is -CH₂CH₂- or single bond, n is an integer of 0 to 4, R is a H atom or a linear or branched alkyl group of 1-7C, and when R is an alkyl group, the double bond has a trans-configuration. The compounds of the present invention are suitable as liquid crystal material for STN display element, and further is chemically stable; hence it is possible to prepare a composition having a superior multiplex characteristic and capable of effecting a low voltage drive.
摘要:
A fluorine-substituted compound containing an ether bond and an intermediate thereof are described, which are represented by: wherein R represents a straight-chain alkyl group having 1 to 8 carbon atoms; n represents an integer of 2 to 7; m represents 1 or 2, X represents a hydrogen atom or a fluorine atom, and represents a trans(equatorial-equatorial)cyclohexane ring. A compound represented by formula (II): wherein R represents a straight-chain alkyl group having 1 to 8 carbon atoms; n represents an integer of 2 to 7; m represents 1 or 2, represents a trans(equatorial-equatorial)cyclohexane ring.
摘要:
Les composés pesticides de formule I: RACR3=CR4CHDRB, dans laquelle RA représente un groupe ArCR1R2 dans lequel Ar représente un groupe phényle ou naphtyle éventuellement substitué par un ou plusieurs groupes halogène, alkoxy, haloalkoxy, méthylènedioxy, haloalkyle ou alkyle comportant de 1 à 6 C; R1 et R2, avec le carbone auquel ils sont attachés, représentent un groupe cycloalkyle comportant de 3 à 6 C éventuellement substitué par un ou plusieurs atomes d'halogène ou groupes alkyle comportant de 1 à 6 C. R3 et R4 peuvent être identiques ou différents et représentent de l'hydrogène, un halogène ou des groupes alkyle comportant de 1 à 6 C et RB représente le reste d'un alcool RB CHDOH dans lequel D est de l'hydrogène ou un cyano et dont l'ester carboxylique de AD1R, cis BD2,2-diméthyl-3-(2,2-dibromovinyl) cyclopropane a un effet insecticide marqué, la configuration de RA et CHDRB autour de la double liaison étant mutuellement trans, et procédés de production de composés (I), de produits intermédiaires, de compositions pesticides comprenant (I), leurs procédés de production, procédés de lutte contre les parasites, notamment les parasites du riz, dans lesquels on utilise ces composés et utilisation des composés (I) dans la production d'un pesticide.
R A represents a group ArCR 1 R 2 - in which Ar represents a phenyl or naphthyl group optionally substituted by one or more halogen, alkoxy, haloalkoxy, methylenedioxy or C 1 -C 6 alkyl or haloalkyl groups; R 1 and R 2 together with the carbon to which they are attached jointly represent a C 3 -C 6 cycloalkyl group optionally substituted by one or more halogen atoms or C 1 -C 6 cycloalkyl groups and R B represents the residue of an alcohol R B CHDOH in which D is hydrogen or cyano and of which the [IR, cis]2,2--dimethyl-3-(2,2-dibromovinyl)cyclopropane carboxylic ester is significantly insecticidal.
摘要:
Es werden Azolylmethylcycloalkane der Formel in der
A und B gleich oder verschieden sind und Wasserstoff, Alkyl mit 1 bis 4 C-Atomen, die ggf. durch Halogen substituiertsein können, Naphthyl, Heteroaryl, Biphenyl oder Phenyl bedeuten, wobei der Phenylrest durch Halogen, Nitro, Alkyl, Alkoxy oder Halogenalkyl mit jeweils 1 bis 4 C-Atomen, Phenoxy oder den Phenylsulfenylrest substituiert sein kann, D und E gleich oder verschieden sind und Wasserstoff oder Halogen bedeuten, Z CH oder N bedeutet, m 1, 2, 3 oder 4 und n 0, 1 oder 2 sein kann,
deren Säureadditionssalze und Matellkomplexe, sowie deren Herstellung beschrieben. Die Verbindungen eignen sich zur Bekämpfung von Krankheiten und zum Pflanzen-, Holz- und Materialschutz.
摘要:
Provided herein is a process for the preparation of an apoptosis-inducing agent, and chemical intermediates thereof. Also provided herein are novel chemical intermediates related to the process provided herein.
摘要:
A decahydronaphthalene derivative represented by general formula (I), a liquid-crystal composition containing the derivative; and a liquid-crystal element containing the composition. The decahydronaphthalene derivative, which is a novel compound, can be extremely easily produced even on an industrial scale as shown in Examples. When added to a base liquid crystal in a small amount, the derivative not only widens the nematic-phase temperature range but can improve various properties of the liquid-crystal material. The derivative has excellent compatibility with base liquid crystals currently in general use as nematic liquid crystals. Therefore, it is suitable for use in various liquid-crystal display elements required to operate in a wide temperature range and is extremely useful as a material for liquid crystals.