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    • 42. 发明授权
    • Tetrahydrothiophene derivatives, and their use in liquid-crystalline mixtures
    • 四氢噻吩衍生物,以及它们在液晶混合物中的应用
    • US06465060B1
    • 2002-10-15
    • US09708852
    • 2000-11-07
    • Rainer WingenBarbara HornungWolfgang Schmidt
    • Rainer WingenBarbara HornungWolfgang Schmidt
    • C09K1934
    • C07D409/12C07D333/38C09K19/588Y10T428/10
    • Tetrahydrothiophene derivatives of the formula (I) R1—X—(A1—M1)a—(A2—M2)b—A3—Y—T—Z—R2  (I) where the symbols and indices have the following meanings, for example: T is undirected and is tetrahydrothiophene-2,5-diyl or tetrahydrothiophene-2,4-diyl R1 is hydrogen or a straight-chain or branched C1-20-alkyl or C2-20-alkenyl radical (with or without asymmetric carbon atoms), R2 is hydrogen or a straight-chain or branched alkyl radical (with or without asymmetric carbon atoms) having 1 to 20 carbon atoms, X is a single bond, —O—, OC(═O)—, —C(═O)O— or —OC(═O)O— Y is —OC(═O)—, —SC(═O)—, —OCH2— or —CH2CH2— Z is a single bond or —O— A1, A2 and A3 are undirected different and are each, independently of one another phenylene-1,4-diyl, M1 and M2 are undirected and are each, independently of one another —OC(═O)—, —OCH2—, —CH2CH2—, —OC(═O)CH2CH2—, —OCH2CH2CH2—, —C≡C—, —CH2CH2CH2CH2— or a single bond; a and b are each, independently of one another, 0 or 1, can be used in liquid-crystal mixtures.
    • 其中符号和指数具有以下含义的式(I)的四氢噻吩衍生物,例如:T是无定向的,并且是四氢噻吩-2,5-二基或四氢噻吩-2,4-二基R 1是氢或直链或支链 C 2-20 - 烷基或C 2-20 - 烯基(具有或不具有不对称碳原子),R 2是氢或具有1至20个碳原子的直链或支链烷基(具有或不具有不对称碳原子),X是 单键,-O-,OC(= O) - , - C(= O)O-或-OC(= O)OY是-OC(= O) - , - SC(= O) - , - OCH 2 - 或-CH 2 CH 2 -Z是单键或-O-A 1,A 2和A 3是不同的且各自独立地彼此是亚苯基-1,4-二基,M 1和M 2是无取代的,并且各自独立地为一个 另一个-OC(= O) - , - OCH 2 - , - CH 2 CH 2 - , - OC(= O)CH 2 CH 2 - , - OCH 2 CH 2 CH 2 - , - C≡C-, - CH 2 CH 2 CH 2 CH 2 - 或单键; 彼此独立地是0或1,可以用于液晶混合物中。
    • 43. 发明授权
    • Phenanthridine derivatives, and their use in liquid-crystalline mixtures
    • 菲啶衍生物及其在液晶混合物中的应用
    • US5702638A
    • 1997-12-30
    • US676301
    • 1996-07-17
    • Rainer WingenBarbara Hornung
    • Rainer WingenBarbara Hornung
    • C07D221/12C07D471/04C09K19/34C09K19/40C09K19/32G02F1/13
    • C07D221/12C09K19/3444
    • Phenanthridine derivatives, and their use in liquid-crystalline mixtures A ferroelectric liquid-crystal mixture containing one or more phenanthridine derivatives of the formula (I) ##STR1## E.sup.1 and E.sup.2 are identical or different and are --N--, --CF-- or --CH--; R.sup.1 and R.sup.2 are identical or different and are, for example, a straight-chain or branched alkyl radical having 1 to 20 carbon atoms; Q is --CH.sub.2 --O--, --CO--O-- or a single bond; M.sup.1 and M.sup.2 are identical or different and are --CO--O--, --O--CO--, --CH.sub.2 --O--, --O--CH.sub.2 --, --CH.sub.2 --CH.sub.2 --, --C.tbd.C--, or a single bond; A.sup.1 and A.sup.2 are identical or different and are 1,4-phenylene, in which one or more H atoms may be replaced by F, trans-1,4-cyclohexylene, pyrimidine-2,5-diyl, pyridine-2,5-diyl, where one H atom may be replaced by F, 1,3,4-thiadiazole-2,5-diyl, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl, 1,3-thiazole-2,4-diyl, 1,3-thiazole-2,5-diyl, thiophene-2,4-diyl or thiophene-2,5-diyl; m and n are zero or one, but their sum is at most one. Even addition of only small amounts of phenanthridine derivatives of the formula (I) gives ferroelectric liquid-crystal mixtures having high negative values for the dielectric anisotropy.
    • PCT No.PCT / EP95 / 00312 Sec。 371日期:1996年7月17日 102(e)日期1996年7月17日PCT提交1995年1月30日PCT公布。 WO95 / 21227 PCT出版物 日期:1995年8月10日苯胺衍生物及其在液晶混合物中的应用含有一种或多种式(I)E1和E2的菲啶衍生物的铁电液晶混合物是相同或不同的, N-,-CF-或-CH-; R1和R2相同或不同,为例如具有1至20个碳原子的直链或支链烷基; Q是-CH 2 -O-,-CO-O-或单键; M 1和M 2相同或不同,为-CO-O-,-O-CO-,-CH 2 -O - , - O-CH 2 - , - CH 2 -CH 2 - , - C 3BOND C-或单键; A1和A2相同或不同,为1,4-亚苯基,其中一个或多个H原子可被F,反式-1,4-亚环己基,嘧啶-2,5-二基,吡啶-2,5-二基代替, 二基,其中一个H原子可被F取代,1,3,4-噻二唑-2,5-二基,1,3-二恶烷-2,5-二基,1,3-二噻烷-2,5-二基, 1,3-噻唑-2,4-二基,1,3-噻唑-2,5-二基,噻吩-2,4-二基或噻吩-2,5-二基; m和n是零或一个,但它们的和最多为一个。 甚至只加入少量式(I)的菲啶衍生物,得到介电各向异性具有高负值的铁电液晶混合物。