公开(公告)号：US5348684A

公开(公告)日：1994-09-20

申请号：US932644

申请日：1992-08-20

Applicant: Wolfgang Hemmerling ,  Hans-Rolf Dubal ,  Claus Escher ,  Gerhard Illian ,  Yoshio Inoguchi ,  Ingrid Muller ,  Mikio Murakami ,  Dieter Ohlendorf ,  Rainer Wingen

Inventor： Wolfgang Hemmerling ,  Hans-Rolf Dubal ,  Claus Escher ,  Gerhard Illian ,  Yoshio Inoguchi ,  Ingrid Muller ,  Mikio Murakami ,  Dieter Ohlendorf ,  Rainer Wingen

IPC: G02F1/13 ,  C07F7/08 ,  C07F7/10 ,  C09K19/40 ,  C09K19/42 ,  C09K19/46 ,  G02F1/137 ,  G02F1/141 ,  C09K19/34 ,  C09K19/52 ,  C09K19/20 ,  C07F7/04

CPC classification number: C07F7/0812 ,  C07F7/0818 ,  C09K19/406

Abstract: The novel silylalkyl or silylalkenyl compounds correspond to the general formula (I) ##STR1## Here the symbols A.sup.1, A.sup.2, A.sup.3 denote aromatic or heteroaromatic molecular units such as 1,4-phenylene or pyrimidine-2,5-diyl which are combined via a single bond (for k, m=0) or via functional groups M.sup.1,M.sup.2 such as CO--O or CH.sub.2 --O; j, k, l, m, n are zero or 1 (j+l+n=2 or 3). The radicals R.sup.2, R.sup.3, R.sup.4, R.sup.5 are hydrogen or alkyl/alkenyl, cycloalkyl, and the radicals R.sup.6, R.sup.7, R.sup.8 have a comparable meaning (hydrogen); R.sup.1 is alkyl/alkenyl or one of the substituents known from LC chemistry such as an .alpha.-haloalkanoic radical. In some cases compounds have wide and polymorphous liquid crystalline phases.

Abstract translation: 新的甲硅烷基烷基或甲硅烷基烯基化合物对应于通式（I）。其中符号A1，A2，A3表示芳族或杂芳族分子单元，例如1,4-亚苯基或嘧啶-2,5-二基，其中 通过单键（对于k，m = 0）或经由官能团M1，M2如CO-O或CH 2 -O组合; j，k，l，m，n为零或1（j + 1 + n = 2或3）。 基团R 2，R 3，R 4，R 5是氢或烷基/烯基，环烷基，基团R 6，R 7，R 8具有相似的含义（氢）; R1是烷基/链烯基或从LC化学上已知的一种取代基，例如α-卤代链烷基。 在某些情况下，化合物具有宽和多晶液相。

公开(公告)号：US5651918A

公开(公告)日：1997-07-29

申请号：US454059

申请日：1995-05-30

Applicant: Gunter Scherowsky ,  Jurgen Gay ,  Rainer Wingen ,  Hans-Rolf Dubal ,  Claus Escher ,  Wolfgang Hemmerling ,  Yoshio Inoguchi ,  Ingrid Muller ,  Dieter Ohlendorf

Inventor： Gunter Scherowsky ,  Jurgen Gay ,  Rainer Wingen ,  Hans-Rolf Dubal ,  Claus Escher ,  Wolfgang Hemmerling ,  Yoshio Inoguchi ,  Ingrid Muller ,  Dieter Ohlendorf

IPC: G02F1/13 ,  C07D317/22 ,  C07D317/36 ,  C07D317/72 ,  C07D405/12 ,  C07D405/14 ,  C07D407/12 ,  C07D409/12 ,  C07D417/12 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/137

CPC classification number: C07D405/12 ,  C07D317/22 ,  C07D405/14 ,  C07D407/12 ,  C07D409/12 ,  C07D417/12 ,  C09K19/58 ,  C09K19/588

Abstract: Optically active 1,3-dioxolane derivatives which carry a mesogenic radical in the 4-position and have the general formula (I) ##STR1## are suitable for use as doping agents in liquid-crystal mixtures--in particular ferroelectric liquid-crystal mixtures. The symbols in the general formula have the following meanings:R.sup.1 is composed analogously to the part of the general formula on the right-hand side of X or is an alkyl or alkylene radical which can be substituted,R.sup.2, R.sub.3 and R.sup.4 are H or alkyl (R.sup.4 is also alkenyl) which can also be substituted [R.sup.2 and R.sup.3, together with the C(2) of the dioxolane ring are also a cycloaliphatic radical or a keto group], J, l and n are zero, 1 or 2 and k and m are zero or 1, subject to the proviso that, if k is zero n is zero and if n is zero m is zero and 1.ltoreq.J+l+n.ltoreq.3,--A.sup.1, --A.sup.2 and --A.sup.3 are an aromatic, heterocyclic or aliphatic ring system, --M.sup.1 and --M.sup.2 are --CO--O, --0--CO, --CH.sub.2 CH.sub.2, --CH.dbd.CH, --CH.sub.2 O, --OCH.sub.2 or --C.tbd.C andX is O, S or O--CO--O.

Abstract translation: 在4-位具有介晶基团并具有通式（I）的光学活性1,3-二氧戊环衍生物（I）适合用作液晶混合物中的掺杂剂，特别是铁电液 - 水晶混合物。 通式中的符号具有以下含义：R 1类似于X的右侧的通式的一部分或可以被取代的烷基或亚烷基，R2，R3和R4是H或 烷基（R4也是烯基），其也可被取代[R 2和R 3与二氧戊环的C（2）一起也是脂环族基团或酮基]，J，l和n分别为0,1或2 并且k和m为零或1，条件是如果k为零，则n为零，并且如果n为零，则m为零且1为J + 1 + n 3，-A 1，-A 2 和-A3是芳族，杂环或脂族环系，-M1和-M2是-CO-O，-O-CO，-CH2CH2，-CH = CH，-CH2O，-OCH2或-C3ONC，X是 O，S或O-CO-O。

公开(公告)号：US5384070A

公开(公告)日：1995-01-24

申请号：US65080

申请日：1993-05-20

Applicant: Wolfgang Hemmerling ,  Hans-Rolf Dubal ,  Claus Escher ,  Gerhard Illian ,  Yoshio Inoguchi ,  Ingrid Muller ,  Mikio Murakami ,  Dieter Ohlendorf ,  Rainer Wingen

Inventor： Wolfgang Hemmerling ,  Hans-Rolf Dubal ,  Claus Escher ,  Gerhard Illian ,  Yoshio Inoguchi ,  Ingrid Muller ,  Mikio Murakami ,  Dieter Ohlendorf ,  Rainer Wingen

IPC: G02F1/13 ,  C07D307/56 ,  C07D405/12 ,  C07D407/12 ,  C07D417/12 ,  C09K19/54 ,  C09K19/58 ,  G02F1/137 ,  G02F1/141 ,  C09K19/34

CPC classification number: C07D405/12 ,  C09K19/58 ,  C09K19/588

Abstract: The use of optically active tetrahydrofuran-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active tetrahydrofuran-2-carboxylic acid esters.Optically active tetrahydrofuran-2-carboxylic acid esters containing a mesogenic molecular building unit are suitable as dopants in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short switching times and in electroclinic phases having large electroclinic coefficients. A further advantage is that they induce a helix having a very small pitch so that they are also suitable for helix compensation in LC mixtures.The compounds are symbolized by the general formula: ##STR1## in which the symbols and indices essentially denote: R.sup.1 =alkyl/alkenyl or tetrahydrofurancarbonyloxy or -thio; j, l, n=zero, 1 or 2; k, m=zero or 1; --A.sup.1, --A.sup.2, --A.sup.3 =phenylene, cycloalkylene or corresponding heterocyclates containing nitrogen, oxygen or sulfur; --M.sup.1, --M.sup.2 =bridges such as --CO--O, --OCH.sub.2 or --CH.dbd.CH; X=oxygen or sulfur.

Abstract translation: 使用光学活性四氢呋喃-2-羧酸酯作为液晶混合物中的掺杂剂，含有它们的液晶混合物和新的光学活性四氢呋喃-2-羧酸酯。 含有介晶分子构建单元的光学活性四氢呋喃-2-羧酸酯适合作为液晶混合物中的掺杂剂。 它们导致具有较短开关时间的液晶铁电相和具有大电位系数的电极相。 另一个优点是它们诱导具有非常小间距的螺旋，使得它们也适用于LC混合物中的螺旋补偿。 化合物以下列通式表示：其中符号和指数基本上表示：R1 =烷基/烯基或四氢呋喃羰基氧基或硫代; j，l，n = 0，1或2; k，m = 0或1; -A1，-A2，-A3 =亚苯基，亚环烷基或含有氮，氧或硫的相应杂环化合物; -M1，-M2 = -CO-O，-OCH2或-CH = CH之类的桥; X =氧或硫。