JPH0830036B2 - New liquid crystal compound - Google Patents
New liquid crystal compoundInfo
- Publication number
- JPH0830036B2 JPH0830036B2 JP17785487A JP17785487A JPH0830036B2 JP H0830036 B2 JPH0830036 B2 JP H0830036B2 JP 17785487 A JP17785487 A JP 17785487A JP 17785487 A JP17785487 A JP 17785487A JP H0830036 B2 JPH0830036 B2 JP H0830036B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal compound
- new liquid
- compound
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Liquid Crystal Substances (AREA)
Description
【発明の詳細な説明】 本発明は,新規液晶性化合物に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel liquid crystalline compound.
更に詳しくは,本発明は一般式〔I〕 〔式中,R1,R2はそれぞれ独立してC2乃至C16の直鎖ア
ルキル基,*は不斉炭素原子を示す。〕 で表わされる光学活性化合物又はそのラセミ体,及び該
化合物を含有する液晶組成物に関する。More specifically, the present invention relates to the general formula [I] [In the formula, R 1 and R 2 are each independently a C 2 to C 16 linear alkyl group, and * represents an asymmetric carbon atom. ] It is related with the optically active compound represented by these, or its racemate, and the liquid-crystal composition containing this compound.
従来,液晶化合物は,種々の電子光学的表示装置に液
晶材料として用いられている。最適な液晶物質の性質は
それぞれの表示方式により異なるが,水分,熱,空気,
光,電場等に対して,物理的,化学的かつ電気的に安定
であることが要求される。Conventionally, liquid crystal compounds have been used as liquid crystal materials in various electro-optical display devices. The optimum liquid crystal substance properties vary depending on the display method, but the
It is required to be physically, chemically and electrically stable against light, electric field and the like.
加えて,液晶の温度範囲が広いこと,駆動電圧の低い
こと,応答速度の速いこと,時分割特性の良好なこと,
視野角の広いことなども要求される。In addition, the temperature range of the liquid crystal is wide, the driving voltage is low, the response speed is fast, and the time division characteristic is good.
A wide viewing angle is also required.
しかし,単一化合物でこれらの諸条件を満足するもの
は今のところ得られておらず,実用的には個々に優れた
性質をもつ数種類の液晶化合物又は非液晶化合物を混合
して液晶組成物としてある程度の使用に耐え得る材料を
得ているのが現状である。However, no single compound satisfying these conditions has been obtained so far, and in practice, several kinds of liquid crystal compounds or non-liquid crystal compounds each having excellent properties are mixed to prepare a liquid crystal composition. The current situation is to obtain a material that can withstand some use.
本発明の目的は,実用的性能に優れた液晶組成物の素
材として有利な化合物を提供することにある。本発明者
らはこの目的で化合物中に2−置換プロピオン酸エステ
ル骨格を有するものを多数合成し,本発明化合物を見出
すに至った。An object of the present invention is to provide a compound which is advantageous as a material for a liquid crystal composition having excellent practical performance. For this purpose, the present inventors have synthesized a large number of compounds having a 2-substituted propionic acid ester skeleton in the compound, and have found the compound of the present invention.
本発明の化合物は,純粋な状態では無色乃至淡黄色で
あり,化学的に安定であって,広い液晶温度範囲を有す
る。The compound of the present invention is colorless to pale yellow in a pure state, is chemically stable, and has a wide liquid crystal temperature range.
更に、他の液晶物質,例えば,既存のビフェニル系,
フェニルシクロヘキサン系,安息香酸フェニルエステル
系,シクロヘキサンカルボン酸フェニルエステル系,シ
ッフ塩基系,アゾキシ系,フェニルピリミジン系,フェ
ニルメタジオキサン系等との相溶性に優れており,これ
らの液晶物質との混合によって液晶温度範囲を広く,応
答特性の優れた液晶組成物を構成する有用な成分である
ことを見出した。In addition, other liquid crystal materials, such as existing biphenyl-based materials,
It has excellent compatibility with phenylcyclohexane type, benzoic acid phenyl ester type, cyclohexanecarboxylic acid phenyl ester type, Schiff base type, azoxy type, phenylpyrimidine type, phenyl metadioxane type, etc. We have found that it is a useful component that constitutes a liquid crystal composition with a wide liquid crystal temperature range and excellent response characteristics.
本発明の化合物は種々の方法で製造できるが,例えば
以下の方法によって製造される。The compound of the present invention can be produced by various methods, for example, the following method.
(1) 4−〔1−(n−アルキルオキシカルボニル)
エチルオキシ〕安息香酸の酸クロライドと4′−n−ア
ルキルオキシ−4−ヒドロキシビフェニルの反応による
エステル化 (2) 塩基存在下,無水極性溶媒中での4−ヒドロキ
シ安息香酸4′−n−アルキルオキシ−4−ビフェニル
エステルと各種スルホン酸1−(n−アルキルオキシカ
ルボニル)エチルエステルの反応によるエーテル化 (3) 塩基存在下での4−〔1−(n−アルキルオキ
シカルボニル)エチルオキシ〕安息香酸4′−ヒドロキ
シ−4−ビフェニルエステルとハロゲン化n−アルキル
の反応によるエーテル化 (4) 2−〔4−(4′−n−アルキルオキシ−4−
ビフェニルオキシカルボニル)フェノキシ〕プロピオン
酸の酸クロライドとn−アルキルアルコールの反応によ
るエステル化 等が挙げられる。(1) 4- [1- (n-alkyloxycarbonyl)
Esterification by Reaction of Ethyloxy] benzoic Acid Acid Chloride with 4'-n-alkyloxy-4-hydroxybiphenyl (2) 4-hydroxybenzoic acid 4'-n-alkyloxy in anhydrous polar solvent in the presence of base Etherification by reaction of -4-biphenyl ester with various sulfonic acid 1- (n-alkyloxycarbonyl) ethyl esters (3) 4- [1- (n-alkyloxycarbonyl) ethyloxy] benzoic acid 4 in the presence of a base 4 Etherification by reaction of'-hydroxy-4-biphenyl ester and n-alkyl halide (4) 2- [4- (4'-n-alkyloxy-4-
Biphenyloxycarbonyl) phenoxy] propionic acid acid chloride and esterification by reaction of n-alkyl alcohol can be mentioned.
以下,実施例を挙げて更に詳細に説明するが,本発明
はこれらによって限定されるものではない。Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
〔実施例1〕 光学活性な4−〔1−(n−ヘキシルオキシカルボニ
ル)エチルオキシ〕安息香酸4′−n−オクチルオキシ
−4−ビフェニルエステルの製造。[Example 1] Production of optically active 4- [1- (n-hexyloxycarbonyl) ethyloxy] benzoic acid 4'-n-octyloxy-4-biphenyl ester.
4−ヒドロキシ安息香酸4′−n−オクチルオキシ−
4−ビフェニルエステル(融点210〜215℃)418mg及び
(−)−p−トルエンスルホン酸−1(n−ヘキシルオ
キシカルボニル)エチルエステル 〔〔α〕▲25 D▼−26.4°(c=1.10,クロロホルム)〕
328mgに炭酸カリウム276mgを加え,アセトニトリル20ml
中で2時間加熱還流した。反応液を冷却後,塩酸水溶液
及びクロロホルムを加え分液した。クロロホルム層を水
洗後濃縮して得られた粗製物をシリカゲルクロマトグラ
フィーで分離精製し,光学活性な4−〔1−(n−ヘキ
シルオキシカルボニル)エチルオキシ〕安息香酸4′−
n−オクチルオキシ−4−ビフェニルエステル360mg
(収率62%)を得た。4-Hydroxybenzoic acid 4'-n-octyloxy-
4-biphenyl ester (melting point 210 - 215 ° C.) 418 mg and (-) - p-toluenesulfonic acid -1 (n-hexyloxy carbonyl) ethyl ester [[α] ▲ 25 D ▼ -26.4 ° (c = 1.10, chloroform )]
Add 276 mg of potassium carbonate to 328 mg, and add 20 ml of acetonitrile.
Heated to reflux for 2 hours. After cooling the reaction solution, an aqueous hydrochloric acid solution and chloroform were added to separate the layers. The crude product obtained by washing the chloroform layer with water and concentrating it was separated and purified by silica gel chromatography to give optically active 4- [1- (n-hexyloxycarbonyl) ethyloxy] benzoic acid 4'-.
360 mg of n-octyloxy-4-biphenyl ester
(Yield 62%) was obtained.
〔α〕▲25 D▼+19.0°(c=1.07,クロロホルム) IR(KBr):2900,1722,1600,1240,1160,760cm-1 NMR(CDCl3) δ6.7〜8.1(m,12H),4.67(q,J=7Hz,1H),4.06(t,
J=6Hz,2H),3.92(t,J=6Hz,2H),1.60(d,J=7Hz,3
H),0.7〜2.0(m,26H) MS(m/e): 574(M+,15),277(100), [Α] ▲ 25 D ▼ + 19.0 ° (c = 1.07, chloroform) IR (KBr): 2900,1722,1600,1240,1160,760cm -1 NMR (CDCl 3 ) δ6.7-8.1 (m, 12H ), 4.67 (q, J = 7Hz, 1H), 4.06 (t,
J = 6Hz, 2H), 3.92 (t, J = 6Hz, 2H), 1.60 (d, J = 7Hz, 3
H), 0.7 to 2.0 (m, 26H) MS (m / e): 574 (M + , 15), 277 (100),
Claims (2)
ルキル基,*は不斉炭素原子を示す。〕 で表わされる光学活性化合物又はそのラセミ体。1. A general formula [I]: [In the formula, R 1 and R 2 are each independently a C 2 to C 16 linear alkyl group, and * represents an asymmetric carbon atom. ] An optically active compound represented by or its racemic body.
ルキル基,*は不斉炭素原子を示す。〕 で表わされる光学活性化合物の1種又は2種以上を含有
することを特徴とする液晶組成物。2. A compound of the general formula [I]: [In the formula, R 1 and R 2 are each independently a C 2 to C 16 linear alkyl group, and * represents an asymmetric carbon atom. ] The liquid crystal composition characterized by containing 1 type (s) or 2 or more types of the optically active compound represented by these.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17785487A JPH0830036B2 (en) | 1987-07-16 | 1987-07-16 | New liquid crystal compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17785487A JPH0830036B2 (en) | 1987-07-16 | 1987-07-16 | New liquid crystal compound |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6422842A JPS6422842A (en) | 1989-01-25 |
JPH0830036B2 true JPH0830036B2 (en) | 1996-03-27 |
Family
ID=16038255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17785487A Expired - Lifetime JPH0830036B2 (en) | 1987-07-16 | 1987-07-16 | New liquid crystal compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0830036B2 (en) |
-
1987
- 1987-07-16 JP JP17785487A patent/JPH0830036B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6422842A (en) | 1989-01-25 |
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