JPS60149564A - 2-(beta-substituted ethyl)-5-substituted pyridine - Google Patents

2-(beta-substituted ethyl)-5-substituted pyridine

Info

Publication number
JPS60149564A
JPS60149564A JP24045483A JP24045483A JPS60149564A JP S60149564 A JPS60149564 A JP S60149564A JP 24045483 A JP24045483 A JP 24045483A JP 24045483 A JP24045483 A JP 24045483A JP S60149564 A JPS60149564 A JP S60149564A
Authority
JP
Japan
Prior art keywords
liquid crystal
substituted
formula
expressed
ethyl
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.)
Granted
Application number
JP24045483A
Other languages
Japanese (ja)
Other versions
JPH045021B2 (en
Inventor
Shigeru Sugimori
滋 杉森
Kazunori Nigorikawa
和則 濁川
Yasuyuki Goto
泰行 後藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JNC Corp
Original Assignee
Chisso Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chisso Corp filed Critical Chisso Corp
Priority to JP24045483A priority Critical patent/JPS60149564A/en
Publication of JPS60149564A publication Critical patent/JPS60149564A/en
Publication of JPH045021B2 publication Critical patent/JPH045021B2/ja
Granted legal-status Critical Current

Links

Abstract

NEW MATERIAL:A compound expressed by formula I (R and R' are 1-15C alkyl and alkoxyl; X is phenylene, biphenylene or expressed by formulas V-VIII). EXAMPLE:2-[beta-(4-Propyloxyphenyl)ethyl]-5-pentyloxypyridine. USE:A component which is a liquid crystal substance for liquid crystal compositions, having improved compatibility with another liquid crystal compound, and capable of reducing the driving voltage of liquid crystal display elements by the compositions prepared from a mixture thereof. PREPARATION:A 3-substituted-6-methylpyridine expressed by formula II is reacted with a 4-substituted benzaldehyde or trans-4-substituted cyclohexylaldehyde expressed by formula III in a solution of LiN (i-propyl)2 in tetrahydrofuran to form a compound expressed by formula IV, which is then dehydrated with KHSO4 and catalytically reduced with H2 in the presence of Pd/C catalyst to afford the aimed compound expressed by formula I .

Description

【発明の詳細な説明】 本発明は、新規な液晶物質およびそれを含有する液晶組
成物に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel liquid crystal material and a liquid crystal composition containing the same.

液晶物質が有する光学異方性及び誘電異方性を利用した
液晶表示素子の表示方式には、TN型、D8型、ゲスト
・ホスト型、二周波法型、DAP型、ホワイト・ティラ
ー型など各種の方式があり、それぞれの方式により使用
される液晶物質に要求される性質が異なる。例えば表示
素子の種類によって、液晶物質として誘電異方性が正の
ものを必要としたり、負のものを必要としたり、或いは
、その中間的な値のものが適したりする。そして使用さ
れる液晶物質はできるだけ広い温度範囲で液晶相を示し
、また、水分、熱、空気、光などに対して安定であるこ
とが必要である。現在のところ、単一化合物でこの様な
条件をすべて満たすものはなく、数種の液晶化合物や非
液晶化合物を混合して実用に供している。
There are various display methods of liquid crystal display elements that utilize the optical anisotropy and dielectric anisotropy of liquid crystal materials, such as TN type, D8 type, guest-host type, dual frequency method type, DAP type, and white tiller type. There are several methods, and each method requires different properties of the liquid crystal material used. For example, depending on the type of display element, a liquid crystal material with positive or negative dielectric anisotropy may be required, or a material with an intermediate value may be suitable. The liquid crystal material used must exhibit a liquid crystal phase over as wide a temperature range as possible and be stable against moisture, heat, air, light, etc. At present, there is no single compound that satisfies all of these conditions, and several types of liquid crystal compounds and non-liquid crystal compounds are mixed and put into practical use.

最近、広い温度範囲、すなわち低温から高温にわたって
動作する液晶表示素子がますます要求されるようになっ
てきた。更に表示素子を駆動させるのに必要な、しきい
値電圧、飽和電圧をより低くできる液晶組成物がめられ
ている。
Recently, there has been an increasing demand for liquid crystal display elements that operate over a wide temperature range, that is, from low temperatures to high temperatures. Furthermore, there is a need for a liquid crystal composition that can lower the threshold voltage and saturation voltage required to drive a display element.

本発明の目的は、この様な要求を満たす液晶組成物の成
分として有用な化合物を提供することである。
An object of the present invention is to provide a compound useful as a component of a liquid crystal composition that satisfies such requirements.

すなわち、本発明は一般式 ((I)式中・RまたはR′は炭素数1〜15のアルま
たはX)()−を示す。)で表わされる2−(β−置換
エチル)−5−置換ピリジンおよびそれを含有する液晶
組成物である。
That is, in the present invention, in the general formula ((I), R or R' represents alkyl having 1 to 15 carbon atoms or X)()-. ) 2-(β-substituted ethyl)-5-substituted pyridine and a liquid crystal composition containing the same.

本発明の(1)式におけるXが2環の化合物は液晶相を
有する。本発明の化合物は、他の液晶化などの液晶化合
物との相溶性に優れ、他の液晶化合物と混合した組成物
を用いた液晶表示素子の駆動電圧を降下させることがで
きる。
The compound of the present invention in which X in formula (1) is two rings has a liquid crystal phase. The compound of the present invention has excellent compatibility with other liquid crystal compounds, and can lower the driving voltage of a liquid crystal display element using a composition mixed with other liquid crystal compounds.

、次に本発明の化合物の製造法について述べる。Next, a method for producing the compound of the present invention will be described.

3−置換−6−メチルビリジン(1)をリチウムジイソ
プロピルアミドのテトラハイドロフラン溶液に加えて、
4−置換ベンズアルデヒドc厘)もしくはトランス−4
−置換ンクロヘキシルアルデヒド(1)と反応させ・2
−(β−(4−置換フェニル)−β−ヒドロキシエチル
)−5−置換ピリジン(ff)もしくは2−(β−(ト
ランス−4−置換シクロヘキシル)−β−ヒドロキシエ
チル)−δ−置換ピリジン(IV)を得る。次いでこの
化合物を硫酸水素カリウムで脱水した後、パラジウム−
カーボンを用いて接触還元することにより、目的の2−
(β−(4−置換フェニル)エチル)−5−置換ピリジ
ン(璽)もしくは2−(β−(トランス−4−1換νク
ロヘキシル)エチル)−δ−置換ピリジン(1)が得ら
れる。
Adding 3-substituted-6-methylpyridine (1) to a solution of lithium diisopropylamide in tetrahydrofuran,
4-substituted benzaldehyde c) or trans-4
-React with substituted chlorohexyl aldehyde (1) ・2
-(β-(4-substituted phenyl)-β-hydroxyethyl)-5-substituted pyridine (ff) or 2-(β-(trans-4-substituted cyclohexyl)-β-hydroxyethyl)-δ-substituted pyridine ( IV). This compound was then dehydrated with potassium hydrogen sulfate and then treated with palladium-
By catalytic reduction using carbon, the desired 2-
(β-(4-substituted phenyl)ethyl)-5-substituted pyridine (1) or 2-(β-(trans-4-1-substituted ν-chlorohexyl)ethyl)-δ-substituted pyridine (1) is obtained.

これは化学式で次のように示される。This is shown in the chemical formula as follows.

(璽) (I) (V) 以下に実施例により本発明をさらに詳細に説明する。(Seal) (I) (V) The present invention will be explained in more detail below using Examples.

実施例1 2−(β−(4−7’ロホキシフエニル)エテル)−5
−ペンチルオキシビリジン 3−ベンチルオキシ−6−メチルピリジン4.(f (
0,02モル)をリチウムジイソプロピルアミド(0,
03モル)のテトラハイドロフラン溶液40−に、−7
0℃に保ちながら加え、次いで4−ブロボキνペンズア
ルデヒF3.7t(0,02モル)を滴下し、以後1時
間この温度で攪拌を続けた。さらに室温にて2時間攪拌
した後、水50tat!を加え、トルエン100dで抽
出する。このトルエン層を分離し、2N−塩酸で洗滌し
、次いで炭酸ナトリウム水溶液で洗滌した後・水洗水が
中性になるまで水洗した。次いでトルエン層を減圧留去
した後、残った固体をメタノールで再結晶して、2−(
β−(4−プロボキシフエニル)−β−ヒドロキシエテ
ル)−5−ペンチルオキシピリジン1.Ofを得たく融
点128℃)。次にこの化合物に硫酸水素カリウム0.
3 Fを加え、180℃で2時間撹拌した。
Example 1 2-(β-(4-7′lohoxyphenyl)ether)-5
-Pentyloxypyridine 3-bentyloxy-6-methylpyridine4. (f (
0.02 mol) to lithium diisopropylamide (0.02 mol)
03 mol) in tetrahydrofuran solution 40-, -7
The mixture was added while maintaining the temperature at 0° C., and then 3.7 t (0.02 mol) of 4-broboxypenzaldehye F was added dropwise, and stirring was continued at this temperature for the next 1 hour. After further stirring at room temperature for 2 hours, 50 tat of water was added! and extracted with 100 d of toluene. This toluene layer was separated, washed with 2N hydrochloric acid, then washed with an aqueous sodium carbonate solution, and then washed with water until the washing water became neutral. Next, the toluene layer was distilled off under reduced pressure, and the remaining solid was recrystallized from methanol to give 2-(
β-(4-proboxyphenyl)-β-hydroxyether)-5-pentyloxypyridine 1. Melting point: 128°C). Next, add 0.0% potassium hydrogen sulfate to this compound.
3F was added and stirred at 180°C for 2 hours.

反応終了後、水50−、クロロホルム507!を加えて
クロロホルムで抽出した後、抽出液を水洗水が中性にな
るまで洗滌した。このクロロホルム層を減圧留去して2
−(β−(4−プロポキンプエニル)ビニル)−5−ペ
ンチルオキVピリジン0.62を得た。この化合物をト
ルエン50−に溶かし、パラジウム−カーボン0,2 
fを加えて常温常圧で接触還元を行なった。反応終了後
、触媒を0別し、溶媒を減圧留去した後、エタノールで
再結晶し、目的物である2−(β 、−(4−7’口ビ
ルオキシフェニル)エチル)−5−ペンチルオキシピリ
ジンを得た。収量0,4℃1融点48.0℃であった。
After the reaction is completed, 50% of water, 507% of chloroform! After extraction with chloroform, the extract was washed with water until the washing water became neutral. This chloroform layer was distilled off under reduced pressure and
-(β-(4-Propoquinpuenyl)vinyl)-5-pentylox Vpyridine 0.62 was obtained. Dissolve this compound in toluene 50- and palladium-carbon 0,2
f was added and catalytic reduction was carried out at room temperature and pressure. After the reaction was completed, the catalyst was removed, the solvent was distilled off under reduced pressure, and then recrystallized with ethanol to obtain the target product, 2-(β,-(4-7'-methyloxyphenyl)ethyl)-5-pentyl. Oxypyridine was obtained. The yield was 0.4°C and the melting point was 48.0°C.

実施例2.3 4−プロポキンベンズアルデヒドに代えて、4− (4
’−ペンチルフェニル)ベンズアルデヒドマたは4−(
)ランス−4′−プロピルシクロヘキシル)ベンズアル
デヒドをそれぞれ用いたほかは実施例1と同様にして、
2−(β−(4“−ペンチルビフェニリル−4′)エテ
ル)−5−ペンチルオキシピリジンまたは2−(p−(
)ランス−4′−プロピルシクロヘキシル)フェネチル
)−5−ペンチルオキシピリジンをそれぞれ合成した。
Example 2.3 Instead of 4-propoquine benzaldehyde, 4-(4
'-pentylphenyl)benzaldehydoma or 4-(
) Lance-4'-propylcyclohexyl)benzaldehyde was used in the same manner as in Example 1,
2-(β-(4“-pentylbiphenyl-4′) ether)-5-pentyloxypyridine or 2-(p-(
) trans-4'-propylcyclohexyl) phenethyl)-5-pentyloxypyridine were synthesized.

これらの物性を実施例1の結果とともに第1表に示す。These physical properties are shown in Table 1 together with the results of Example 1.

表中C,81Nおよび工はそれぞれ結晶、スメクチック
相、ネマチック相および等方性液相を表わし、番印はそ
の上欄の相が存在することを示し、−印はその上欄の相
が存在しないことを示し、数字はこれをはさむ・印の相
の間の相転移温度(C)を示す。
In the table, C, 81N, and E represent crystal, smectic phase, nematic phase, and isotropic liquid phase, respectively, and the number mark indicates that the phase in the column above it exists, and the - mark indicates that the phase in the column above it exists. The number indicates the phase transition temperature (C) between the sandwiched phases.

実施例4(応用例) トランス−4−プロピル−(4′−シアノフェニル)シ
クロヘキサン 24% トランス−4−ペンチル−(4′−シアノフェニル)シ
クロヘキサン 36% トランス−4−へブチル−(4′−シアノフェニル)シ
クロヘキサン 25% 4−シアノ−4’−()ランス−4−ペンチルシクロヘ
キシル)ピフェニル 15% なる組成の液晶混合物のネマチック−透明点は72.0
℃、粘度は20℃で28C9s誘電異方性値(以下Δ6
と略す)は+11.6・光学異方性値(以下△nと略す
)は0.140である。これをセル厚10μ惰のTNセ
ルに封入した液晶セルのしきい値電圧は1,75 V 
、飽和電圧は2.40Vであった。この混合物90M@
部と本発明の実施例1の2−(β−(4−プロピルオキ
シフェニル)エチル)−5−ペンチルオキシピリジ71
0重量部とから成る液晶組成物のネマチック−透明点は
59.6℃、粘度は20℃で29cpsΔ6は+10.
2、Δnは0,131 、 L、きい値電圧は1.54
 V・飽和電圧は2.16 Vであった。
Example 4 (Application example) Trans-4-propyl-(4'-cyanophenyl)cyclohexane 24% Trans-4-pentyl-(4'-cyanophenyl)cyclohexane 36% Trans-4-hebutyl-(4'- The nematic clearing point of a liquid crystal mixture having the following composition: cyanophenyl)cyclohexane 25% 4-cyano-4'-()lans-4-pentylcyclohexyl)piphenyl 15%
℃, viscosity is 28C9s dielectric anisotropy value (hereinafter Δ6
) is +11.6 and the optical anisotropy value (hereinafter abbreviated as Δn) is 0.140. The threshold voltage of the liquid crystal cell, which is sealed in a TN cell with a cell thickness of 10 μm, is 1.75 V.
, the saturation voltage was 2.40V. This mixture 90M@
and 2-(β-(4-propyloxyphenyl)ethyl)-5-pentyloxypyridi 71 of Example 1 of the present invention
The nematic clearing point of the liquid crystal composition consisting of 0 parts by weight is 59.6°C, the viscosity is 29cpsΔ6 at 20°C, and +10.
2, Δn is 0,131, L, threshold voltage is 1.54
The saturation voltage was 2.16V.

このように本発明を適用して液晶表示素子のしきい値電
圧、飽和電圧を降下させることができた。
As described above, by applying the present invention, it was possible to lower the threshold voltage and saturation voltage of a liquid crystal display element.

以上 特許出願人 チ ッ ソ 株 代金 社手続補正書 昭和60年λ月又/日 特許庁長官 志 賀 学 殿 Z 発明の名称 2−(β−置換エチル)−5−置換ビリ)シン& 補正
をする者 事件との関係 特許出願人 大阪府大阪市北区中之島三丁目6番32号(〒530)
(zo’7)チッソ株式会社 代表者野木貞雄 駄代理人 東京都新宿区新宿2丁目8番1号(〒160)α 補正
の対象 明細書の「発明の詳細な説明」の欄 I 補正の内容 (1)明細書第7頁第9行〜最終行、「実施例2.3・
・・・・・第1表に示す。」を [実施例2〜7 実施例1に準じた方法によシ次の化合物を合成した。
Patent applicant Chisso Corporation Proceeding Amendment 1985/1985 Commissioner Manabu Shiga Z Name of the invention 2-(β-Substituted ethyl)-5-substituted biry) Syn & Amendment Relationship with the case of the person who did the patent application: 3-6-32 Nakanoshima, Kita-ku, Osaka-shi, Osaka Prefecture (530)
(zo'7) Chisso Co., Ltd. Representative Sadayuta Nogi Agent 2-8-1 Shinjuku, Shinjuku-ku, Tokyo (160) α Column I of "Detailed Description of the Invention" of the Specification Subject to the Amendment Contents of the Amendment (1) Page 7, line 9 to last line of the specification, “Example 2.3.
...shown in Table 1. ” [Examples 2 to 7 The following compounds were synthesized by a method similar to Example 1.

2−(β−Ce−ペンチルビフェニリル−4′)エチル
)−5−ペンチルオキシピリジン2−(p−()9ンス
ー41−グロビルシクロヘキシル)フェネチル1−5−
ペンチルオキシピリジン2−(β−(41−ペンチルビ
フェニリル−47)エチル)−5−エチルピリジン 2−(p−()ランス−4′−ペンチルシクロヘキシル
)フェネチル)−5−エチルピリジン2−(β−←e−
エチルビフェニリルー41)エチル)−5−プロピルピ
リジン 2−(β−(4′−プロピルとフェニリル−4′)エチ
ル)−5−プロピルピリジン これらの化合物の物性を実施例1の結果とともに第1表
に示す。」 と訂正する。
2-(β-Ce-pentylbiphenyl-4')ethyl)-5-pentyloxypyridine 2-(p-()9-41-globylcyclohexyl)phenethyl 1-5-
Pentyloxypyridine 2-(β-(41-pentylbiphenyl-47)ethyl)-5-ethylpyridine 2-(p-()lans-4'-pentylcyclohexyl)phenethyl)-5-ethylpyridine 2-(β −←e−
Ethyl biphenylyl (41) ethyl)-5-propylpyridine 2-(β-(4'-propyl and phenylyl-4')ethyl)-5-propylpyridine The physical properties of these compounds are shown in Table 1 along with the results of Example 1. Shown below. ” he corrected.

(2)回書第8頁、第1表を別紙の通シ訂正する。(2) Table 1 on page 8 of the circular is revised in the attached circular.

(3)同゛書第9頁第7行「実施例4」を「実施例8」
と訂正する。
(3) "Example 4" on page 9, line 7 of the same book was changed to "Example 8"
I am corrected.

a添付書類 別紙(第1表) 以上a Attached documents Attachment (Table 1) that's all

Claims (2)

【特許請求の範囲】[Claims] (1)一般式 (式中、RまたはR′は炭素数1〜l 5.のアルキル
基またはアルコキン基を示し、Xはわされる2−(β−
置換エチル)−5−置換ピリジン。
(1) General formula (wherein R or R' represents an alkyl group or an alkoxy group having 1 to 5 carbon atoms, and X is omitted 2-(β-
Substituted ethyl)-5-substituted pyridine.
(2)一般式 (式中、几またはR′は炭素数1〜15のアルキル基ま
たはアルコキシ基を示し%Xはべ」8ごXまたはべ」8
コXを示す。)で表わされる2−(β−置換エチル)−
5−置換ピリジンを含有する液晶組成物。
(2) General formula (in the formula, 几 or R' represents an alkyl group or an alkoxy group having 1 to 15 carbon atoms.
Shows koX. ) 2-(β-substituted ethyl)-
A liquid crystal composition containing a 5-substituted pyridine.
JP24045483A 1983-12-20 1983-12-20 2-(beta-substituted ethyl)-5-substituted pyridine Granted JPS60149564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24045483A JPS60149564A (en) 1983-12-20 1983-12-20 2-(beta-substituted ethyl)-5-substituted pyridine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24045483A JPS60149564A (en) 1983-12-20 1983-12-20 2-(beta-substituted ethyl)-5-substituted pyridine

Publications (2)

Publication Number Publication Date
JPS60149564A true JPS60149564A (en) 1985-08-07
JPH045021B2 JPH045021B2 (en) 1992-01-30

Family

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Country Link
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642199A (en) * 1984-06-13 1987-02-10 Chisso Corporation Novel liquid crystal compounds and liquid crystal compositions containing same
US4659503A (en) * 1983-12-21 1987-04-21 Merck Patent Gesellschaft Mit Beschrankter Huftung Pyridylthiophenes
US4659500A (en) * 1984-09-11 1987-04-21 Chisso Corporation Ester derivative having a positive dielectric anisotropy
US4668426A (en) * 1984-04-09 1987-05-26 VEB Werk f/u/ r Fernsehelektronik im VEB Kombinat Mikroelektronik Liquid crystalline substances
US4668425A (en) * 1985-06-05 1987-05-26 Chisso Corporation Novel liquid crystal compound
DE3600052A1 (en) * 1986-01-03 1987-07-09 Merck Patent Gmbh HETEROCYCLIC COMPOUNDS
US4684220A (en) * 1984-07-12 1987-08-04 Seiko Epson Kabushiki Kaisha 2-phenylpyridine derivatives and liquid crystal compositions including same
US4698176A (en) * 1984-01-11 1987-10-06 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Heterocyclically substituted ethanes and their use in liquid crystal materials and devices
US4715984A (en) * 1985-01-22 1987-12-29 Merck Patent Gesellschaft Mit Beschrankter Haftung Liquid-crystalline dihydroazines
EP0264883A2 (en) * 1986-10-21 1988-04-27 Banyu Pharmaceutical Co., Ltd. Substituted pyridine derivatives
EP0308794A2 (en) * 1987-09-19 1989-03-29 Hoechst Aktiengesellschaft Liquid crystal phenyl pyrimidine ester of cyclohexane-carboxylic acid with a smectic phase in liquid crystal mixtures and its use
EP0409634A2 (en) * 1989-07-20 1991-01-23 Sanyo Chemical Industries Ltd. Liquid crystal compounds and optically active compounds

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659503A (en) * 1983-12-21 1987-04-21 Merck Patent Gesellschaft Mit Beschrankter Huftung Pyridylthiophenes
US4698176A (en) * 1984-01-11 1987-10-06 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Heterocyclically substituted ethanes and their use in liquid crystal materials and devices
US4668426A (en) * 1984-04-09 1987-05-26 VEB Werk f/u/ r Fernsehelektronik im VEB Kombinat Mikroelektronik Liquid crystalline substances
US4642199A (en) * 1984-06-13 1987-02-10 Chisso Corporation Novel liquid crystal compounds and liquid crystal compositions containing same
US4879060A (en) * 1984-07-12 1989-11-07 Seiko Epson Kabushiki Kaisha 2-phenylpyridine derivatives and liquid crystal compositions including same
US4684220A (en) * 1984-07-12 1987-08-04 Seiko Epson Kabushiki Kaisha 2-phenylpyridine derivatives and liquid crystal compositions including same
US4659500A (en) * 1984-09-11 1987-04-21 Chisso Corporation Ester derivative having a positive dielectric anisotropy
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