JPS62148452A - Novel liquid crystal substance and liquid crystal composition - Google Patents

Novel liquid crystal substance and liquid crystal composition

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Publication number
JPS62148452A
JPS62148452A JP28795685A JP28795685A JPS62148452A JP S62148452 A JPS62148452 A JP S62148452A JP 28795685 A JP28795685 A JP 28795685A JP 28795685 A JP28795685 A JP 28795685A JP S62148452 A JPS62148452 A JP S62148452A
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JP
Japan
Prior art keywords
liquid crystal
formula
methylhexyl
benzene
methyloctyl
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
JP28795685A
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Japanese (ja)
Other versions
JPH0574582B2 (en
Inventor
Kenji Suzuki
賢治 鈴木
Atsushi Sugiura
杉浦 淳
Masahiro Yoshida
正広 吉田
Tsunenori Fujii
藤井 恒宣
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Kanto Chemical Co Inc
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Kanto Chemical Co Inc
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Priority to JP28795685A priority Critical patent/JPS62148452A/en
Publication of JPS62148452A publication Critical patent/JPS62148452A/en
Publication of JPH0574582B2 publication Critical patent/JPH0574582B2/ja
Granted legal-status Critical Current

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

Abstract

NEW MATERIAL:The compound of formula I (R is 1-18C alkyl; n is 3-7; *represents optical activity). EXAMPLE:(S)-4-octylbiphenyl-4'-yl p-(4-methylhexyl)oxybenzoate. USE:A substance for liquid crystal display element. It has chemical stability, exhibits ferroelectricity and expands temperature range of chiral smectic C- phase. PREPARATION:The compound of formula I can be produced by reacting (S)-p-(4- methylhexyl)oxybenzoic acid chloride of formula II with 4-octyl-4'- hydroxybiphenyl of formula III in a solvent such as benzene in the presence of a base such as pyridine.

Description

【発明の詳細な説明】 (技術分野) 本発明は、強誘電性液晶組成物の成分として有用で、か
つ、化学的安定性に優れた新規な液晶性化合物ならびに
この液晶性化合物の少くとも1種を含有する液晶組成物
に関する。
Detailed Description of the Invention (Technical Field) The present invention relates to a novel liquid crystal compound useful as a component of a ferroelectric liquid crystal composition and having excellent chemical stability, and at least one of the liquid crystal compounds. The present invention relates to a liquid crystal composition containing seeds.

(従来技術) 1980年、クラークおよびラゲルバル(アプライド・
フイジクス・レターズ、36 、899 、1980 
)によって発表された強誘電液晶の光スイツチング現象
を利用した表示方式は、従来のネマティック液晶を用い
た表示方式にはないすぐれた性質、すなわち高速応答性
を有しており、次世代表示素子として注目をあびている
(Prior Art) In 1980, Clark and Lagerval (Applied
Physics Letters, 36, 899, 1980
) has announced a display method using the optical switching phenomenon of ferroelectric liquid crystals, which has excellent properties not found in conventional display methods using nematic liquid crystals, namely high-speed response, and is expected to be used as a next-generation display element. It is attracting attention.

強誘電液晶は、1975年、アール・ビー・メイアーら
によって初めて見出されたものであるが(ル・ジュルナ
ール・ドウ・フイジク36L−6(+(1975))、
液晶物質が強誘電性を示すには、次の条件を満足しなけ
ればならない。
Ferroelectric liquid crystal was first discovered in 1975 by R.B. Meyer et al.
In order for a liquid crystal substance to exhibit ferroelectricity, it must satisfy the following conditions.

■ 分子構造中に不斉炭素原子を有し、かつ、光学活性
であること。
■ It must have an asymmetric carbon atom in its molecular structure and be optically active.

(9分子長軸方向に垂直な永久双極子モーメントを有す
ること。
(9) Must have a permanent dipole moment perpendicular to the long axis direction of the molecule.

■ カイラルスメクテイツクC相(SmC”相)を有す
ること。
■ It must have a chiral smectic C phase (SmC" phase).

従来の代表的な強誘電液晶を構造式その他により次に示
す。
Typical conventional ferroelectric liquid crystals are shown below in terms of their structural formula and other details.

Cr78 t −→EimH” ←→5InC−→Sm
A ←→工s。
Cr78 t −→EimH” ←→5InC−→Sm
A ←→ 工 s.

(a)は、メイアーらにより見出された最初の強誘電液
晶物質であり、(1)lは、自発分極の大きい化合物と
して知られている。いずれも、シック塩基であり、水分
に不安定である。(C)は、水分には安定であるがSm
C”相の温度範囲が狭い。
(a) is the first ferroelectric liquid crystal material discovered by Meyer et al., and (1) l is known as a compound with large spontaneous polarization. Both are thick bases and are unstable in moisture. (C) is stable in moisture, but Sm
The temperature range of the C” phase is narrow.

(発明の開示) 本発明者らは、化学的に安定で、強誘電性液晶組成物成
分として有用な新規化合物を提供することに成功した。
(Disclosure of the Invention) The present inventors have succeeded in providing a novel compound that is chemically stable and useful as a component of a ferroelectric liquid crystal composition.

本発明に係る新規化合物は、化学的に安定な物質であっ
て、液晶組成物成分として使用した場合に、動作温度範
囲の広い表示素子を提供することができるものである。
The novel compound according to the present invention is a chemically stable substance, and when used as a component of a liquid crystal composition, can provide a display element with a wide operating temperature range.

すなわち、本発明に係る化合物は、液晶組成物において
SmC”相の温度範囲を拡張する成分として有用なもの
である。
That is, the compound according to the present invention is useful as a component for expanding the temperature range of the SmC'' phase in a liquid crystal composition.

以下に本発明の詳細な説明する。The present invention will be explained in detail below.

本発明に係る新規化合物は、一般式(11(式中、Rは
炭素原子数1−18のアルキル基であり、nは3〜7の
整数を表わし、本の符号は光学活性原子を示すものであ
る) で表わされる液晶性化合物である。
The novel compound according to the present invention has the general formula (11 (wherein R is an alkyl group having 1 to 18 carbon atoms, n represents an integer of 3 to 7, and the reference numeral indicates an optically active atom. It is a liquid crystalline compound represented by

本発明に係る化合物は、次の図式により示される合成ル
ートにより製造することができる。
The compounds according to the present invention can be produced by the synthetic route shown by the following scheme.

図式中に示された(1)〜(×1)の記号は、いずれも
実施例中の対応する各化合物に符されている。
The symbols (1) to (x1) shown in the diagram are all assigned to the corresponding compounds in the examples.

以下に、本発明に係る化合物およびその製造例ならびに
使用例を実施例によって具体的に説明する。
EXAMPLES Below, the compounds according to the present invention, their production examples, and usage examples will be specifically explained with reference to Examples.

実施例1 (S) −4−オクチルビフェニル−4′−イルp−(
4−メチルヘキシル)オキシベンゾエート(×)の合成 (a)  4−アセトキシ−4/−カブリリルビフェニ
ル(1)の合成 無水塩化アルミニウム1262、塩化メチレン400C
Cの混合物へ、攪拌しながらカブリリルクロライド92
2を滴下し、次に、これに、4−アセトキシビフェニル
80 tを塩化メチレン溶液として室温下で、滴下した
。同温度で、5時間反応させた後、反応液を希塩酸中へ
注加した。遊離した塩化メチレン層をよく水洗し、芒硝
で乾燥させた。溶媒を留去した後、エタノールより2回
再結晶することにより、839の4−アセトキシ−4/
−カプリリルビフェニルfi)ヲ得た。
Example 1 (S) -4-octylbiphenyl-4'-yl p-(
Synthesis of 4-methylhexyl)oxybenzoate (x) (a) Synthesis of 4-acetoxy-4/-cabrarylbiphenyl (1) Anhydrous aluminum chloride 1262, methylene chloride 400C
Add cabrylyl chloride 92 to the mixture of C with stirring.
2 was added dropwise, and then 80 t of 4-acetoxybiphenyl was added dropwise thereto as a methylene chloride solution at room temperature. After reacting at the same temperature for 5 hours, the reaction solution was poured into dilute hydrochloric acid. The liberated methylene chloride layer was thoroughly washed with water and dried with Glauber's salt. After distilling off the solvent, the 4-acetoxy-4/839 was recrystallized twice from ethanol.
-caprylyl biphenyl fi) was obtained.

(b)  4−オクチル−4/−ヒドロキンビフェニル
(11)の合成 反応容器に4−アセトキシ−4′−カブリリルビフェニ
ル(1)92 t 、 )エチレングリコール450C
C185%苛性カリ602(水100CCへ溶解)およ
び85%抱水ヒドラジン852を仕込み、還流下に、3
時間攪拌した。次に、反応系内の水を留去しなから22
0 ’Cまで昇温させ、同温度で4時間反応させた。放
冷後、反応液を希塩酸中へ注加し、析出物をイソプロピ
ルエーテル(IPE )で抽出した。IPE層をよく水
洗した後、芒硝で乾燥させた。工PEを留去し、残留分
をエタノールより再結晶することにより667の4−オ
クチル−4′−ヒドロキシビフェニル(ii) ヲ(l
 fc。m、11.139〜l・10°C (c)(81p−(4−メチルヘキシル)オキシ安息香
酸メチル(iii)の合成 反応容器にp−ヒドロキ7安息香酸メチル257、(8
1−4−メチルヘキ/ルブロマイド(Mol。
(b) Synthesis of 4-octyl-4/-hydroquinbiphenyl (11) Add 4-acetoxy-4'-cabryl biphenyl (1) (92 t, ) ethylene glycol 450C to a reaction vessel.
C185% caustic potash 602 (dissolved in 100 cc of water) and 85% hydrazine hydrate 852 were charged, and under reflux, 3
Stir for hours. Next, the water in the reaction system is distilled off.
The temperature was raised to 0'C, and the reaction was continued at the same temperature for 4 hours. After cooling, the reaction solution was poured into dilute hydrochloric acid, and the precipitate was extracted with isopropyl ether (IPE). After thoroughly washing the IPE layer with water, it was dried with Glauber's salt. By distilling off the PE and recrystallizing the residue from ethanol, 4-octyl-4'-hydroxybiphenyl (ii) of 667 was obtained.
fc. m, 11.139~1・10°C (c)
1-4-Methylhex/rubromide (Mol.

cryst、 Liq、Cryst It4237−2
−t71984の反応例に従い合成。1)、 p、 7
1〜72°C/ 23.5 mmHg ) 30 ?、
無水炭酸カリウム、167およびシクロヘキサノン30
0CCを仕込み、130〜140°Cで5時間攪拌した
crystal, Liq, Crystal It4237-2
-Synthesized according to the reaction example of t71984. 1), p, 7
1~72°C/23.5 mmHg) 30? ,
Anhydrous potassium carbonate, 167 and cyclohexanone 30
0CC was charged and stirred at 130-140°C for 5 hours.

反応液を水に注加し、次いで、遊離した有機層をベンゼ
ンで抽出した。このベンゼン層をよく水洗した後、芒硝
で乾燥させた。溶媒を留去し、残留分を減圧蒸留して(
S)−p−(4−メチルヘキシル)オキ7安息香酸メチ
ル(iii) 37.5 ?を得た。1)、p、 13
6〜137°C/ 0 、4 mmHg(d)  (S
l−p −(4−メチルヘキシル)オキシ安息香酸(1
v)の合成 反応容器に、(S)−p−(4−メチルヘキシル)オキ
シ安息香酸メチル(iii) 37.5 ?、メタノー
ル200CCオヨび95%苛性ソーダ182(水100
 CCに溶解)を仕込み、還流下で、4時間攪拌した。
The reaction solution was poured into water, and then the liberated organic layer was extracted with benzene. This benzene layer was thoroughly washed with water and then dried with sodium sulfate. The solvent was distilled off and the residue was distilled under reduced pressure (
S)-p-(4-methylhexyl)ox7benzoate methyl (iii) 37.5 ? I got it. 1), p. 13
6-137°C/0,4 mmHg(d) (S
l-p-(4-methylhexyl)oxybenzoic acid (1
In the synthesis reaction vessel of v), methyl (S)-p-(4-methylhexyl)oxybenzoate (iii) 37.5 ? , methanol 200cc, 95% caustic soda 182 (water 100cc)
(dissolved in CC) and stirred under reflux for 4 hours.

反応液を希塩酸中に注加し、析出物をイソプロピルエー
テル(IPE )で抽出した。このIPE層をよく水洗
した後、芒硝で乾燥させた。工PEを留去した後、残留
分をヘキサンより再結晶して(S)−p−(4−メチル
ヘキシル)オキシ安息香酸(iv)34S’を得た。m
、 1)、 118〜125.5°C(e)  (8)
−p −(4−メチルヘキシル)オキシ安息香酸クロラ
イド(v)の合成 反応容器に、(S) −p−(ll−メチルヘキシル)
オキ/安息香酸347、ベンゼン150CCを仕込み、
還流下に攪拌しながら塩化チオニル357を滴下した。
The reaction solution was poured into dilute hydrochloric acid, and the precipitate was extracted with isopropyl ether (IPE). After thoroughly washing this IPE layer with water, it was dried with Glauber's salt. After distilling off the PE, the residue was recrystallized from hexane to obtain (S)-p-(4-methylhexyl)oxybenzoic acid (iv) 34S'. m
, 1), 118-125.5°C (e) (8)
-p-(4-methylhexyl)oxybenzoic acid chloride (S) -p-(ll-methylhexyl)
Prepared 347 cc/benzoic acid and 150 cc benzene.
Thionyl chloride 357 was added dropwise while stirring under reflux.

次いで、同温度で6時間反応させた後、溶媒と過剰の塩
化チオニルを留去した。残留分を減圧蒸留して(S)−
p−(4−メチルヘキシル)オキシ安息香酸クロライド
M 32.79を得た。
Then, after reacting at the same temperature for 6 hours, the solvent and excess thionyl chloride were distilled off. The residue was distilled under reduced pressure (S)-
p-(4-methylhexyl)oxybenzoic acid chloride M 32.79 was obtained.

1)、 p、 133°C/ 0 、3 mmHg(f
)  (S) ’ 4−オクチルビフェニル−4′−イ
ルp−(4−メチルヘキシル)オキシベンゾエート(×
)の合成 反応容器に、4−オクチル−4/−ヒドロキシビフェニ
ル(li12f、ベンゼン30CC、ヒ’) ’、;ン
0.67を仕込み、攪拌しながら、室温下、(S)−1
)−(4−メチルヘキシル)オキシ安息香酸クロライド
M 2 ?を滴下した。室温下で2時間、さらに還流下
で3時間、反応させた後、反応液を水に注加した。遊離
したベンゼン層をよく水洗し、芒硝で乾燥させた。
1), p, 133°C/0, 3 mmHg (f
) (S) '4-Octylbiphenyl-4'-yl p-(4-methylhexyl)oxybenzoate (×
) 4-octyl-4/-hydroxybiphenyl (li12f, benzene 30CC, H')',;
)-(4-Methylhexyl)oxybenzoic acid chloride M2? was dripped. After reacting at room temperature for 2 hours and further under reflux for 3 hours, the reaction solution was poured into water. The liberated benzene layer was thoroughly washed with water and dried with Glauber's salt.

ベンゼンを留去し、残留分をアセトンより2回再結晶し
て(S) −4−オクチルビフェニル−4′−イルp 
−(ll−メチルヘキシル)オキシベンゾエート(幻1
.37を得た。
Benzene was distilled off, and the residue was recrystallized twice from acetone to give (S)-4-octylbiphenyl-4'-yl p
-(ll-methylhexyl)oxybenzoate (phantom 1
.. I got 37.

このものの含量は、液体クロマトグラフィーにて99%
以上、薄層クロマトグラフィーにて1スポツトであった
。また、赤外線吸収ス啄りトル測定によれば、特性値は
、2800〜3000m−’、17 =l Ocm 、
1260 cm  であった。また、マススペクトル分
析では、500に分子イオンピークが認められ、このも
のの化学構造が支持された。
The content of this substance was determined to be 99% by liquid chromatography.
The above was one spot in thin layer chromatography. Furthermore, according to the infrared absorption torque measurement, the characteristic values are 2800 to 3000 m-', 17 = l Ocm,
It was 1260 cm. In addition, mass spectrometry analysis revealed a molecular ion peak at 500, supporting the chemical structure of this product.

このものを、メトラーホットステージFP−82にはさ
み、偏光顕微鏡下で、相変化を観察したところ以下のよ
うであった。
This product was placed on a Mettler hot stage FP-82, and the phase change was observed under a polarizing microscope, and the following was observed.

108   ヤ125  153 Cry8を一一−→SmC←−−→Ch←−−→工SO
実施例2〜・1 実施例■に準拠して、同ちりにして、各種の誘導体を合
成し、相転移温度を測定した結果を表1に示す。〔表中
、Rは、前記一般式(1)におけるRであシ、それによ
り各化合物を示す〕実施例5 (S) −4−オクチルビフェニル−,1/−イルp−
(6−メチルオクチル)オキシベンゾニーt−(xi)
の合成 (a)(Si6−メチルオクチルブロマイド(vl)の
合成 反応容器に粉末マグネシウム13.89およびテトラヒ
ドロフラン(水素化リチウムアルミニウムで処理した後
に蒸留して精製)160ccを仕込み、これに(S) 
−2−メチルブチルブロマイド(Mo1.Crest、
 Li(1,Cr3’St 4837−521978の
反応例に従って合成1)、p、 123〜124°C)
 78 fを滴下してグリニヤール試薬を調製した。
108 Ya125 153 Cry8 11-→SmC←--→Ch←--→Engineering SO
Examples 2 to 1 According to Example 2, various derivatives were synthesized using the same powder, and the phase transition temperatures were measured. Table 1 shows the results. [In the table, R is R in the general formula (1), thereby indicating each compound] Example 5 (S) -4-Octylbiphenyl-,1/-yl p-
(6-methyloctyl)oxybenzonyt-(xi)
Synthesis (a) (Synthesis of Si6-methyloctyl bromide (vl)) 13.89 g of powdered magnesium and 160 cc of tetrahydrofuran (purified by distillation after treatment with lithium aluminum hydride) were charged into a reaction vessel, and (S)
-2-methylbutyl bromide (Mo1.Crest,
Synthesis according to the reaction example of Li (1, Cr3'St 4837-521978 1), p, 123-124 °C)
A Grignard reagent was prepared by adding 78 f dropwise.

別に、反応容器に、1,4−ジブロモブタン゛1237
、テトラヒドロフラン(THF ) 350 cc 。
Separately, 1,4-dibromobutane 1237
, tetrahydrofuran (THF) 350 cc.

およびQ、l mol / tのジリチウムテトラクロ
ロキュープレート−THF浴液(Li2CuC74/ 
THF )18ccを仕込み、0°C以下で、上記のグ
リニヤール試薬を滴下した。
and Q, l mol/t of dilithium tetrachlorocuprate-THF bath solution (Li2CuC74/
18 cc of THF was charged, and the Grignard reagent mentioned above was added dropwise at 0°C or below.

0°C以下で1時間、10″Cで1時間、さらに室温下
で1時間攪拌した後、反応液を希塩酸中に注加した。遊
離した有機層をベンゼンで抽出し、ベンゼン層を充分に
水洗した。ベンゼン層を芒硝で乾燥させた後、溶媒を留
去し、残留分を減圧蒸留して(S) −6〜メチルオク
チルブロマイド(vi)60 ?を得た。b、p、 1
02〜114°C/ 27 mmHg(t))  (S
)−p−(6〜メチルオクチル)オキシ安息香酸メチル
(viOの合成 反応容器にp−ヒドロキシ安息香酸メチル40.3?、
(S) −6−メチルオクチルブロマイド502、無水
炭酸カリウム677およびシクロヘキサノン350CC
を仕込み、120〜125゛Cで5時間攪拌した。
After stirring for 1 hour at 0°C or lower, 1 hour at 10''C, and 1 hour at room temperature, the reaction solution was poured into dilute hydrochloric acid.The liberated organic layer was extracted with benzene, and the benzene layer was thoroughly Washed with water. After drying the benzene layer with Glauber's salt, the solvent was distilled off and the residue was distilled under reduced pressure to obtain (S)-6~methyloctyl bromide (vi)60?b, p, 1
02~114°C/27 mmHg(t)) (S
)-p-(6~methyloctyl)methyl oxybenzoate (40.3? of methyl p-hydroxybenzoate in the synthesis reaction vessel of viO,
(S)-6-methyloctyl bromide 502, anhydrous potassium carbonate 677 and cyclohexanone 350CC
and stirred at 120-125°C for 5 hours.

次に、反応液を水に注加し、遊離した有機層をエチルエ
ーテルで抽出した。エーテル層をよく水洗し、芒硝で乾
燥させた。溶媒留去後、残留分を減圧蒸留して(Sl 
 p  (6−メチルオクチル)オキシ安息香酸メチル
〜1i155.59を得た。
Next, the reaction solution was poured into water, and the liberated organic layer was extracted with ethyl ether. The ether layer was thoroughly washed with water and dried with Glauber's salt. After distilling off the solvent, the residue was distilled under reduced pressure (Sl
Methyl p(6-methyloctyl)oxybenzoate ~1i155.59 was obtained.

b、p、 169〜171°C/ l 、OmmHg(
C)  (S)  p  (6−メチルオクチル)オキ
シ安息香酸(vii+)の合成 反応容器に(S) −p −(6−メチルオクチル)オ
キシ安息香酸メチル549.95チ苛性ンーダ209(
水200CCに溶解)、メタノール300CCを仕込み
、還流下3時間攪拌した。反応液を希塩酸中へ注加し、
析出物をベンゼンで抽出した。ベンゼン層をよく水洗し
た後、芒硝で乾燥させた。
b, p, 169-171 °C/l, OmmHg (
C) Synthesis of (S) p (6-methyloctyl)oxybenzoic acid (vii+) Into a reaction vessel, add 549.95 methyl (S) -p -(6-methyloctyl)oxybenzoate and 209 chloride (
(Dissolved in 200 cc of water) and 300 cc of methanol were added, and the mixture was stirred under reflux for 3 hours. Pour the reaction solution into dilute hydrochloric acid,
The precipitate was extracted with benzene. After thoroughly washing the benzene layer with water, it was dried with Glauber's salt.

溶媒を留去後、残留分をヘキサンより再結晶して、(S
)〜p−(6−メチルオクチル)オキシ安息香酸(vi
ti) 43 、19を得た。m、 1)、 126.
5〜127°C(d)(Sip−(6−メチルオクチル
)オキシ安息香酸クロライド(1×)の合成 反応容器に(S) −p =(6−メチルオクチル)オ
キシ安息香酸487およびベンゼン2000Cヲ仕込み
、還流下、攪拌しながら塩化チオニル・+5 rを滴下
した。同己度で6時間反応させた後、ベンゼンと過剰の
塩化チオニルを留去した。残留分を減圧蒸留して(Sl
 ’ p−(6−メチルオクチル)オキシ安息香酸クロ
ライド(ix) 18 Si’を得た。
After distilling off the solvent, the residue was recrystallized from hexane to obtain (S
) to p-(6-methyloctyl)oxybenzoic acid (vi
ti) 43, 19 was obtained. m, 1), 126.
5-127°C (d) (Sip-(6-methyloctyl)oxybenzoic acid chloride (1x) synthesis reaction vessel (S) -p = (6-methyloctyl)oxybenzoic acid 487 and benzene 2000C) After charging, thionyl chloride +5 r was added dropwise while stirring under reflux. After reacting for 6 hours at homogeneity, benzene and excess thionyl chloride were distilled off. The residue was distilled under reduced pressure (Sl
' p-(6-methyloctyl)oxybenzoic acid chloride (ix) 18 Si' was obtained.

b、 p、 151 ’C/ 0.25 mmHg(e
)  (St−、+−オクチルビフェニル−4′−イル
p−(6−メチルオクチル)オキシベンゾエート(xi
)の合成 反応容器に、4−オクチル−・1′−ヒドロキノビフェ
ニル27、ベンゼン30 CC、ヒ’) シン0.67
を仕込み、攪拌しなから(S) −p −(6−メチル
オクチル)オキシ安息香酸クロライド2.21を滴下し
た。室温下で2時間、さらに還流下で3時間反応させた
後、反応液を水中に注加した。
b, p, 151'C/0.25 mmHg (e
) (St-,+-octylbiphenyl-4'-yl p-(6-methyloctyl)oxybenzoate (xi
) into a synthesis reaction vessel, 4-octyl-1'-hydroquinobiphenyl 27, benzene 30 CC, H') syn 0.67
was charged, and while stirring, 2.21 g of (S)-p-(6-methyloctyl)oxybenzoic acid chloride was added dropwise. After reacting at room temperature for 2 hours and further under reflux for 3 hours, the reaction solution was poured into water.

遊離したベンゼン層をよく水洗した後、芒硝で乾燥させ
た。
The liberated benzene layer was thoroughly washed with water and then dried with Glauber's salt.

溶媒留去後、残留分をエタノールより2回再結晶して(
S) −4−オクチルビフェニル−4′−イルp−(6
−メチルオクチル)オキシベンゾエート1.89を得た
After distilling off the solvent, the residue was recrystallized twice from ethanol (
S) -4-octylbiphenyl-4'-yl p-(6
-Methyloctyl)oxybenzoate 1.89% was obtained.

このものの含量は、液体クロマトグラフィーにて99%
以上、薄層クロマトグラフィーにて1スポツトであった
。また、赤外線吸収ス啄りトル測定によれば、特性値は
2800〜3000 cm−’、1730 cm−”、
1260 cm−’であった。マスス滅りトル分析では
、528に分子イオンピークが認められ、このものの化
学構造が支持された。このものを、メトラーホットステ
ーシFP−82にはさみ、偏光顎做鏡下で相変化を観察
したところ以下のようであった。
The content of this substance was determined to be 99% by liquid chromatography.
The above was one spot in thin layer chromatography. In addition, according to infrared absorption peak measurement, the characteristic values are 2800 to 3000 cm-', 1730 cm-',
It was 1260 cm-'. Mass spectroscopy analysis revealed a molecular ion peak at 528, supporting the chemical structure of this product. This material was placed in a Mettler hot station FP-82, and the phase change was observed under a polarized jaw mirror, and the following was observed.

87.9   カ 140   154.8Cryst
SmC←−→Ch     工SO実施例6〜8 実施例5に準拠して、同様にして、各種の誘導体を合成
し、相転移温度を測定した結果を表2に示す。〔表中、
Rは、前記一般式(I)におけるRであり、それにより
各化合物を示す〕各実施例で得られた化合物は、広い温
度域にエナンチオトロピックsmc”相を有しており、
強誘電性液晶組成物の温度範囲を拡張する成分としてい
ずれも有効である。
87.9 Ka 140 154.8Cryst
SmC←-→Ch SO Examples 6 to 8 Based on Example 5, various derivatives were synthesized in the same manner, and the phase transition temperatures were measured. Table 2 shows the results. [In the table,
R is R in the general formula (I) and indicates each compound] The compounds obtained in each example have an enantiotropic smc" phase in a wide temperature range,
Any of these is effective as a component for extending the temperature range of the ferroelectric liquid crystal composition.

実施例9 表面に、t? IJイミド系嵩高分子膜塗布し、ラビン
グ処理した2枚の透明電極を有するガラス基板に、マイ
ラーフィルムをはさんで液晶セルを組立てた。なお、2
枚の基板は、そのラビング方向は平行になるようにされ
、セル間隔は9μmである。この液晶セルに各実施例で
得られた化合物を封入し、等方性液体からSmC”相ま
で徐冷しだ。この液晶セルを2枚の偏光板にはさみ、電
圧を印加し、極性を反転させると表示状態が変化した。
Example 9 On the surface, t? A liquid crystal cell was assembled by sandwiching a Mylar film between two glass substrates having transparent electrodes coated with an IJ imide-based bulk polymer film and subjected to rubbing treatment. In addition, 2
The rubbing directions of the two substrates were parallel to each other, and the cell spacing was 9 μm. The compounds obtained in each example were sealed in this liquid crystal cell and slowly cooled from an isotropic liquid to a SmC'' phase.This liquid crystal cell was sandwiched between two polarizing plates, and a voltage was applied to reverse the polarity. When I did this, the display status changed.

このように各実施例で得られた各化合物のSmC”相は
、強誘電性を示し電気光学素子として使用し得るもので
ある。
As described above, the SmC'' phase of each compound obtained in each example exhibits ferroelectricity and can be used as an electro-optical element.

本発明に係る化合物は、化学的に安定であって、強誘電
性液晶組成物の温度範囲を拡張する成分として有用なも
のである。
The compounds according to the present invention are chemically stable and useful as components for extending the temperature range of ferroelectric liquid crystal compositions.

Claims (1)

【特許請求の範囲】 1)一般式( I ) ▲数式、化学式、表等があります▼( I ) (式中、Rは炭素原子数1〜18のアルキル基であり、
nは3〜7の整数を表わし、*の符号は、光学活性原子
を示すものである) で表わされる液晶性化合物。 2)一般式( I ) ▲数式、化学式、表等があります▼( I ) (式中、Rは炭素原子数1〜18のアルキル基であり、
nは3〜7の整数を表わし、*の符号は光学活性原子を
示すものである) で表わされる液晶性化合物の少くとも1種を含有するこ
とを特徴とする液晶組成物。
[Claims] 1) General formula (I) ▲There are numerical formulas, chemical formulas, tables, etc.▼(I) (In the formula, R is an alkyl group having 1 to 18 carbon atoms,
n represents an integer of 3 to 7, and the symbol * represents an optically active atom.) A liquid crystalline compound represented by: 2) General formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) (In the formula, R is an alkyl group having 1 to 18 carbon atoms,
n represents an integer of 3 to 7, and the symbol * represents an optically active atom.) A liquid crystal composition comprising at least one liquid crystal compound represented by the following.
JP28795685A 1985-12-23 1985-12-23 Novel liquid crystal substance and liquid crystal composition Granted JPS62148452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28795685A JPS62148452A (en) 1985-12-23 1985-12-23 Novel liquid crystal substance and liquid crystal composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28795685A JPS62148452A (en) 1985-12-23 1985-12-23 Novel liquid crystal substance and liquid crystal composition

Publications (2)

Publication Number Publication Date
JPS62148452A true JPS62148452A (en) 1987-07-02
JPH0574582B2 JPH0574582B2 (en) 1993-10-18

Family

ID=17723918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28795685A Granted JPS62148452A (en) 1985-12-23 1985-12-23 Novel liquid crystal substance and liquid crystal composition

Country Status (1)

Country Link
JP (1) JPS62148452A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01254645A (en) * 1988-04-01 1989-10-11 Adeka Argus Chem Co Ltd Optically active aryl ester compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01254645A (en) * 1988-04-01 1989-10-11 Adeka Argus Chem Co Ltd Optically active aryl ester compound

Also Published As

Publication number Publication date
JPH0574582B2 (en) 1993-10-18

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