JPS60197652A - Fluorohydroxybenzoic acid ester derivative - Google Patents

Fluorohydroxybenzoic acid ester derivative

Info

Publication number
JPS60197652A
JPS60197652A JP5248384A JP5248384A JPS60197652A JP S60197652 A JPS60197652 A JP S60197652A JP 5248384 A JP5248384 A JP 5248384A JP 5248384 A JP5248384 A JP 5248384A JP S60197652 A JPS60197652 A JP S60197652A
Authority
JP
Japan
Prior art keywords
formula
liquid crystal
cyano
compound
fluoro
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.)
Pending
Application number
JP5248384A
Other languages
Japanese (ja)
Inventor
Shigeru Sugimori
滋 杉森
Toyoshirou Isoyama
磯山 豊志郎
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 JP5248384A priority Critical patent/JPS60197652A/en
Priority to US06/692,166 priority patent/US4659501A/en
Priority to DE8585100949T priority patent/DE3562236D1/en
Priority to EP85100949A priority patent/EP0152014B1/en
Publication of JPS60197652A publication Critical patent/JPS60197652A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

NEW MATERIAL:The compound of formula I (R is 1-10C alkyl or alkoxy; the group of formula II is formula III or formula IV; X is halogen selected from Br, Cl and F). EXAMPLE:3-Fluoro-4-( trans-4'-pentylcyclohexanoyloxy )benzoic acid 2''-cyano-4''- fluorophenyl ester. USE:A liquid crystal composition having excellent compatibility and low viscosity. The dielectric anisotropy DELTAepsilon is about -4, which is large in absolute value for a compound having negative dielectric anisotropy. It is expected to be applicable in a double-frequency display. PREPARATION:The compound of formula I can be prepared by synthesizing the corresponding carboxylic acid chloride of formula V, and reacting with 2-cyano- 4-halogenophenol of formula VI in the presence of pyridine.

Description

【発明の詳細な説明】 本発明は液晶組成物の成分として有用な強い負の誘電異
方性を有する新規な液晶化合物及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 novel liquid crystal compounds having strong negative dielectric anisotropy useful as components of liquid crystal compositions and liquid crystal compositions containing the same.

液晶を応用した表示素子は液晶物質が持つ光学異方性及
び誘電異方性を利用したものであるが、その表示様式に
よってTN型(ねじれネマチック型)、DS型(動的散
乱型)、ゲスト・ホスト型、DAP型など各種の方式に
分けられ、夫々の使用に適する液晶物質の性質祉異なる
Display elements using liquid crystals utilize the optical anisotropy and dielectric anisotropy of liquid crystal materials, and depending on the display format, there are TN type (twisted nematic type), DS type (dynamic scattering type), and guest type.・Divided into various types such as host type and DAP type, each type has different properties and characteristics of liquid crystal material suitable for use.

液晶物質は水分、空気、熱、光等に安定であることが必
要であることは共通しており、又、室温を中心として出
来るだけ広い温度範囲で液晶相を示すものがめられてい
る。現在のところ単−化合物ではこの様な条件を満たす
物質はなく、数種の液晶化合物や非液晶化合物を混合し
て得られる液晶組成物を使用しているのが現状である。
It is common that liquid crystal substances need to be stable against moisture, air, heat, light, etc., and there is a desire for liquid crystal substances that exhibit a liquid crystal phase over as wide a temperature range as possible, centering on room temperature. At present, there is no single compound that satisfies these conditions, and the current situation is to use liquid crystal compositions obtained by mixing several types of liquid crystal compounds and non-liquid crystal compounds.

最近、特にカラー液晶表示方法の一方式であるゲスト・
ホスト型液晶表示素子が注目される様になってきた。こ
れは液晶と色素の混合物を使用するものであるがポジ型
のゲスト・ホスト型表示素子には負の誘電異方性を有す
る液晶材料が使用される。従ってその液晶材料の構成成
分として、誘電異方性値が負で、その絶対値ができるだ
け大きく、シかも低粘度でかつ相溶性にすぐれた液晶性
化合物が要求されている。
Recently, guest display, which is a color LCD display method, has been
Host-type liquid crystal display devices have started to attract attention. This uses a mixture of liquid crystal and dye, but a liquid crystal material with negative dielectric anisotropy is used for positive type guest-host type display elements. Therefore, as a component of the liquid crystal material, there is a demand for a liquid crystalline compound having a negative dielectric anisotropy value, the absolute value of which is as large as possible, a low viscosity, and excellent compatibility.

本発明は以上の点に鑑みてなされたもので負の誘電異方
性を示す液晶組成物を構成する新規な化合物を提供する
ことを目的とする。
The present invention has been made in view of the above points, and an object of the present invention is to provide a novel compound constituting a liquid crystal composition exhibiting negative dielectric anisotropy.

即ち、本発明は一般式 (上式中Rは炭素数が1〜10個のアルキル基又はアル
コキシ基を、()は0又は(ンをXはBr、C1又はF
のハロゲン原子を示す。)で表わされΣ8−フルオロー
4−ヒドロキシ安息香2−2’−シアノ−4′−ハロゲ
ノフェニルエステルのニスデル誘導体及びそれを少くと
も1成分として含有している液晶組成物である。
That is, the present invention relates to the general formula (in the above formula, R is an alkyl group or an alkoxy group having 1 to 10 carbon atoms, () is 0 or (), and X is Br, C1, or F
represents a halogen atom. ) and a Nisdel derivative of Σ8-fluoro-4-hydroxybenzoic 2-2'-cyano-4'-halogenophenyl ester, and a liquid crystal composition containing it as at least one component.

本発明の化合物は融点が高いために単独で液晶表示素子
に使用されることはまずないが相溶性に優れ粘度は比較
的低く、そのn電異方性値Δεは一4根度と△εが負の
ものとしては絶対値が大きく、他のネマチック液晶、例
えはシクロヘキサンカルボン酸フェニルエステル系、安
に香rRyエニルエステル系、フェニルメタジオキサン
系、フェニルピリミジン系、あるいはその他のネマチッ
ク液晶と混合することにより、ゲスト・ホス)W表示菓
子に使用できる優れた特性をもった負の誘電異方性を肩
する液晶組成物を得ることが可能であシ、これらの組成
物を用いる液晶表示素子のしきい電圧を、本発明の化合
物の添加によシ者しく低下することができる。又、本発
明の化合物を用いる事によシ最近多桁表示を行うのに有
利とされている二周波法へ応用できる可能性もある。
The compound of the present invention is unlikely to be used alone in liquid crystal display elements due to its high melting point, but it has excellent compatibility and relatively low viscosity, and its n-electronic anisotropy value Δε is 14 roots and Δε has a large absolute value as a negative one, so it can be mixed with other nematic liquid crystals, such as cyclohexanecarboxylic acid phenyl ester type, beanyl rRy enyl ester type, phenyl metadioxane type, phenylpyrimidine type, or other nematic liquid crystals. By doing so, it is possible to obtain liquid crystal compositions that can handle negative dielectric anisotropy and have excellent properties that can be used in guest-hoss (W) display confectioneries. The threshold voltage can be significantly lowered by the addition of compounds according to the invention. Furthermore, by using the compound of the present invention, there is a possibility that it can be applied to the two-frequency method, which has recently been considered to be advantageous for multi-digit display.

次に本発明の化合物の製造法を示すと、まず対応するカ
ルボン酸クロリドを合成し、それをピリジン存在下、2
−シアノ−4−ハロゲノフェノールと反応させれば目的
の化合物が得られる。これを化学式で示すと次のように
なる。
Next, the method for producing the compound of the present invention is shown. First, the corresponding carboxylic acid chloride is synthesized, and then 2
The desired compound can be obtained by reacting with -cyano-4-halogenophenol. This can be expressed as a chemical formula as follows.

CI) (上式中R,−A−は前記と同じ) ここで用いる2−シアノ−4−ハロゲノフェノールは5
−ハロゲノサリチルアルデヒドのオキシムを無水酢酸に
て脱水して製造できる。
CI) (In the above formula, R and -A- are the same as above) 2-cyano-4-halogenophenol used here is 5
- It can be produced by dehydrating the oxime of halogenosalicylaldehyde with acetic anhydride.

以下実施例によシ本発明の化合物の製造方法、および使
用例によ多用途を詳細に説明する。
Hereinafter, the method for producing the compound of the present invention will be explained in detail by way of Examples, and its various uses will be explained in detail by way of Examples.

実施例1 (8−フルオロ−4−(トランス−4′−ペンチルシク
ロヘキサノイルオキシ)女息香酸−2“−シアノ−4“
−フルオロフェニルエステル((I)式でRがC3H1
1*−IC)が−Q−、XがFのもの)の製造) (1)2−シアノ−4−フルオロフェノールの製造−5
−フルオロサリチルアルデヒドのオキシム20、2 F
 (0,18モル)を無水酢酸100g+/に溶解し5
時間還流した。反応終了後、無水酢酸を′減圧にて留去
し、残った油状物に水酸化カリウム20gを水100N
/に溶解した溶液とエタノール1005g/を加え80
℃にて2時間加温した。室温にまで放冷し、6N塩酸5
0ttl*水200+tを加えて、結晶を析出させた。
Example 1 (8-Fluoro-4-(trans-4'-pentylcyclohexanoyloxy)feminzoic acid-2"-cyano-4"
-Fluorophenyl ester (in formula (I), R is C3H1
(1) Production of 2-cyano-4-fluorophenol-5
-oxime 20,2F of fluorosalicylaldehyde
(0.18 mol) was dissolved in 100 g+/ of acetic anhydride and 5
Refluxed for an hour. After the reaction, acetic anhydride was distilled off under reduced pressure, and 20 g of potassium hydroxide was added to the remaining oil with 100 N of water.
Add the solution dissolved in / and 1005 g of ethanol to 80
It was heated at ℃ for 2 hours. Leave to cool to room temperature, add 6N hydrochloric acid 5
0ttl*200+t of water was added to precipitate crystals.

この結晶t−濾過し、80 telのメタノールから再
結晶し15.6gの針状結晶を得た。融点は121〜1
22℃であった。
The crystals were t-filtered and recrystallized from 80 tel of methanol to obtain 15.6 g of needle-like crystals. Melting point is 121-1
The temperature was 22°C.

(11)エステル化 (1)で得うれた2−シアノ−4−フルオロフェノール
1.5 f/ (11mmot)を乾燥したピリジン5
11/に溶解しておき、これに8−フルオロ−を乾燥ト
ルエン10g/に溶解した溶液を加え、60’Cにて3
時間加熱反応させた。反応終了後、反応物を水100g
1中に加え、トルエン層を分離し6N塩酸、2N水酸化
ナトリウム溶液1次いで水で洗浄し、トルエン層を無水
硫酸ナトリウム上で乾燥した。トルエン溶液からトルエ
ンを留去し残った固型物を酢酸エチル8 mlから再結
晶して目的の8−フルオロ−4−()うyx−4′−ペ
ンチルシクロヘキサノイルオキシ)安息香酸−r’−シ
アノ−4“−フルオロフェニルエステルa、iB収率6
1.8%)を得た。このものの結晶−ネマチック点(C
−N点)は116.5℃、ネマチック−透明点(N−I
点)は184.0℃であった。
(11) Pyridine 5 obtained by drying 1.5 f/(11 mmot) of 2-cyano-4-fluorophenol obtained in esterification (1).
To this was added a solution of 8-fluoro dissolved in 10 g of dry toluene, and the solution was heated at 60'C for 3
The reaction was carried out by heating for a period of time. After the reaction is complete, add the reactant to 100g of water.
The toluene layer was separated and washed with 6N hydrochloric acid, 2N sodium hydroxide solution, and then water, and the toluene layer was dried over anhydrous sodium sulfate. Toluene was distilled off from the toluene solution, and the remaining solid substance was recrystallized from 8 ml of ethyl acetate to obtain the desired 8-fluoro-4-()yx-4'-pentylcyclohexanoyloxy)benzoic acid-r'. -Cyano-4"-fluorophenyl ester a, iB yield 6
1.8%). The crystal-nematic point (C
-N point) is 116.5℃, nematic-clearing point (N-I
point) was 184.0°C.

実施例2〜7 実施例1における8−フルオロ−4−(トランス−4′
−ペンチルシクロヘキサノイルオキシ)安息香酸クロリ
ドおよび2−シアノ−4−フルオロフェノールに替えて
対応するカルボン酸クロリド及び2−シアノ−4−ハロ
ゲノフェノールを使用したほかは実施例1に準じた操作
を行って第1表に示す(I)式の化合物を製造した。そ
れらの相転移点を実施例1の結果と共に第1表に示す。
Examples 2 to 7 8-Fluoro-4-(trans-4' in Example 1)
-Pentylcyclohexanoyloxy)benzoic acid chloride and 2-cyano-4-fluorophenol were replaced with the corresponding carboxylic acid chloride and 2-cyano-4-halogenophenol, but the same procedure as in Example 1 was carried out. A compound of formula (I) shown in Table 1 was prepared. Their phase transition points are shown in Table 1 together with the results of Example 1.

第1表 実施例8(使用例) CsHy()COO+0CHs 10.4%0潰)C3
H7(>−Coo−Q−OC2H510,8%04Ho
()COO+0CHs 21.1%C4H11()C’
0O−Q−OC2H619,8%C11HII−0−C
OO−Q−OCH321,0%CI)Hll−0−CO
O−o−earn 17.4%上Hrfi組成のエステ
ル系のネマチック液晶組成物のN−I点は62.8°C
9誘電率の異方性Δεは−1,0,20℃における粘度
は18.5cpであった。この混合物に市販のメルク社
製色素G−224を1%添加したものをセルに封入して
ゲスト・ホストセルを作9そのしきい電圧を測定したと
ころ8.80Vであった。
Table 1 Example 8 (Usage example) CsHy()COO+0CHs 10.4%0 crush)C3
H7(>-Coo-Q-OC2H510,8%04Ho
()COO+0CHs 21.1%C4H11()C'
0O-Q-OC2H619,8%C11HII-0-C
OO-Q-OCH321,0%CI)Hll-0-CO
The N-I point of the ester-based nematic liquid crystal composition with an Hrfi composition of 17.4% above O-o-earn is 62.8°C
The anisotropy Δε of the dielectric constant 9 and the viscosity at −1, 0, and 20° C. were 18.5 cp. A guest-host cell was prepared by adding 1% of commercially available dye G-224 manufactured by Merck & Co. into the mixture.9 The threshold voltage of the cell was measured and found to be 8.80V.

次に本発明の化合物である実施例1の3−フルオロ−4
−(トランス−41−ペンチルシクロヘキサノイルオキ
シ)安息香R−2”−シアノ−4“−フルオロフェニル
エステル1 oziNを上記液晶組成物A90重量部に
刃口えて液晶組成物を調製した。この液晶組成物のN−
I点は72.8°C1誘電率の異方性値Δεは−8,2
゜20°Cにおける粘度は26cpで、これを先と同じ
く色素G−224を1%添加したものでゲスト・ポスト
型液晶セルを作ってそのしきい値″電圧を測ボしたとこ
ろ2.5■と大きく低下した。
Next, 3-fluoro-4 of Example 1, which is a compound of the present invention,
A liquid crystal composition was prepared by adding -(trans-41-pentylcyclohexanoyloxy)benzoic R-2"-cyano-4"-fluorophenyl ester 1oziN to 90 parts by weight of the above liquid crystal composition A. N- of this liquid crystal composition
Point I is 72.8°C1 Anisotropy value Δε of permittivity is -8.2
The viscosity at 20°C is 26 cp, and when I made a guest post type liquid crystal cell using this to which 1% of dye G-224 was added and measured the threshold voltage, it was 2.5cm. and decreased significantly.

以上 手続補正書 給料59年12月r日 L 事件の表示 昭和59年特許願第52483号 2 発明の名称 フルオーヒドロキシ安息香酸エステル誘導体& 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)
(20))チ、ソ株式会社 代衆者 野 木 貞 雄 4代理人 東京都新宿区新宿2丁目8番1号(〒160)明細書の
発明の詳細な説明の欄 〃 補正の内容 (1)明細書第6頁第4行、第7頁第4〜5行訃よび第
14行、第81第2行、および第9頁丁から5〜4行、
「シクロヘキナノイルオヤシ」を「シクνヘキシルカル
ボニルオキシ」とそれぞれ訂正する。
Above procedure amendment salary December 1959 r Date L Display of the case 1982 Patent Application No. 52483 2 Name of the invention Fluorohydroxybenzoic acid ester derivative & Person making the amendment Relationship to the case Patent applicant Osaka City, Osaka Prefecture 3-6-32 Nakanoshima, Kita-ku (530)
(20)) Chi, So Co., Ltd. Representative Sadao Nogi 4 Representative 2-8-1 Shinjuku, Shinjuku-ku, Tokyo (160) Column for detailed explanation of the invention in the specification Contents of amendment (1) ) Page 6, line 4 of the specification, page 7, lines 4-5, and line 14, line 81, line 2, and lines 5-4 from page 9,
Correct ``cyclohexyl carbonyloxy'' to ``cyclohexylcarbonyloxy.''

以上that's all

Claims (2)

【特許請求の範囲】[Claims] (1)一般式 (上式中Rは炭1が1〜10個のアルキル基又はアルコ
キシ基を、()はK)又は 昏を、XはBr、CL又はFのハロゲン原子を示す) で表ワされる8−フルオロ−4−ヒドロキシ安息香[−
2’−シアノ−4′−ハロゲノフェニルエステルのエス
テル誘導体。
(1) Represented by the general formula (in the above formula, R represents an alkyl group or an alkoxy group having 1 to 10 carbon atoms, () represents K) or a halogen atom, and X represents a halogen atom of Br, CL or F) 8-Fluoro-4-hydroxybenzoic [-
Ester derivative of 2'-cyano-4'-halogenophenyl ester.
(2)一般式 (上式中Rは炭素数が1〜10個のアルキル基又はアル
コキシ基を、−@−は0又は(ンを、XはBr、C4又
はFのハロゲン原子を示す) で表わされる8−フルオロ−4−ヒドロキシ安息香酸−
2′−シアノ−4′−ハロゲノフェニルエステルのエス
テル誘導体を少くとも1成分として含有することを特徴
とする液晶組成物。
(2) General formula (in the above formula, R represents an alkyl group or an alkoxy group having 1 to 10 carbon atoms, -@- represents 0 or (n, and X represents a halogen atom of Br, C4 or F) 8-fluoro-4-hydroxybenzoic acid represented by
A liquid crystal composition containing an ester derivative of 2'-cyano-4'-halogenophenyl ester as at least one component.
JP5248384A 1984-01-30 1984-03-19 Fluorohydroxybenzoic acid ester derivative Pending JPS60197652A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5248384A JPS60197652A (en) 1984-03-19 1984-03-19 Fluorohydroxybenzoic acid ester derivative
US06/692,166 US4659501A (en) 1984-01-30 1985-01-17 2-cyano-4-halogenophenyl substituted-benzoates
DE8585100949T DE3562236D1 (en) 1984-01-30 1985-01-30 2-cyano-4-halogenophenyl substituted-benzoates and liquid crystal compositions containing them
EP85100949A EP0152014B1 (en) 1984-01-30 1985-01-30 2-cyano-4-halogenophenyl substituted-benzoates and liquid crystal compositions containing them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5248384A JPS60197652A (en) 1984-03-19 1984-03-19 Fluorohydroxybenzoic acid ester derivative

Publications (1)

Publication Number Publication Date
JPS60197652A true JPS60197652A (en) 1985-10-07

Family

ID=12915959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5248384A Pending JPS60197652A (en) 1984-01-30 1984-03-19 Fluorohydroxybenzoic acid ester derivative

Country Status (1)

Country Link
JP (1) JPS60197652A (en)

Similar Documents

Publication Publication Date Title
US4732699A (en) Biphenyl carbonic acid ester compounds and liquid crystal composition containing the same
JPS6388156A (en) Novel 4-cyclohexylbenzoic acid compound
US4908152A (en) Cyclohexane derivative
JPH0428265B2 (en)
JPH0150694B2 (en)
JPS60197652A (en) Fluorohydroxybenzoic acid ester derivative
JPS59141540A (en) Tricyclic carboxylic acid ester derivative
US4603018A (en) 2-cyano-4-halogenophenyl esters
JP2854406B2 (en) β-ketocarboxylic acid derivative
JPH0150693B2 (en)
JPS60204769A (en) Halogenopyrimidine derivative
JPS6011454A (en) Alpha-cyanocinnamic acid ester
JPH0257060B2 (en)
JPS58140086A (en) 4-(trans-5-alkyl-1, 3-dioxa-2-yl)benzoic acid derivative
JPH0320243A (en) Ester compound
JPS6111213B2 (en)
JPS59134767A (en) Ester compound having negative dielectric anisotropy
JPS60193957A (en) Ester derivative of 2-cyano-4-halogenophenol
JPH045015B2 (en)
JPS6034932A (en) Ester of dihalogenophenol
JPS5955864A (en) Ester of orthocyanophenol
JPS61282345A (en) Ester compound
JPS60158157A (en) Fluorohydroxybenzoic acid derivative
JPS59144749A (en) Schiff base having megative dielectric anisotropy
JPH0142261B2 (en)