JPH06184142A - Phenylpyrimidine derivative having optically active oxazolidinone ring and liquid crystal composition - Google Patents

Phenylpyrimidine derivative having optically active oxazolidinone ring and liquid crystal composition

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Publication number
JPH06184142A
JPH06184142A JP4338714A JP33871492A JPH06184142A JP H06184142 A JPH06184142 A JP H06184142A JP 4338714 A JP4338714 A JP 4338714A JP 33871492 A JP33871492 A JP 33871492A JP H06184142 A JPH06184142 A JP H06184142A
Authority
JP
Japan
Prior art keywords
liquid crystal
compound
formula
optically active
phase
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
JP4338714A
Other languages
Japanese (ja)
Inventor
Sadao Takehara
貞夫 竹原
Masashi Osawa
政志 大澤
Kayoko Nakamura
佳代子 中村
Tamejirou Hiyama
爲次郎 檜山
Tetsuo Kusumoto
哲生 楠本
Kenichi Sato
健一 佐藤
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.)
DIC Corp
Sagami Chemical Research Institute
Original Assignee
Sagami Chemical Research Institute
Dainippon Ink and Chemicals Co Ltd
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 Sagami Chemical Research Institute, Dainippon Ink and Chemicals Co Ltd filed Critical Sagami Chemical Research Institute
Priority to JP4338714A priority Critical patent/JPH06184142A/en
Publication of JPH06184142A publication Critical patent/JPH06184142A/en
Pending legal-status Critical Current

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  • Liquid Crystal Substances (AREA)

Abstract

PURPOSE:To produce a new phenylpyrimidine derivative having optically active oxazolidinone ring and useful as a liquid crystal material, especially a ferroelectric liquid crystal display material having excellent response and memory property. CONSTITUTION:The optically active compound of formula I [R1 is F or 1-18C alkyl which may be substituted with 1-10C alkyl; X is single bond or O; (m) is 0 or 1; ring A is 1,4-phenylene or trans-1,4-cyclohexylene which may be substituted with F; R<2> is 1-10C alkyl; the configuration of the asymmetric carbon atom at 5-site of the oxazolidinone ring is (R) or (S)], e.g. (R)-5-hexyl-3-[4-(5- decylpyrimidin-2-yl)phenyl]oxazolidin-2-one. The compound of formula I is produced e.g. by reacting a compound of formula II (R<5> is alkyl) with a compound of formula III (Me is methyl) and reacting the resultant compound of formula IV with an optically active oxirane derivative of formula V in the presence of a base.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、新規な光学活性オキサ
ゾリジノン環を有するフェニルピリミジン誘導体及びそ
れを含有する液晶材料、特に応答性、メモリー性に優れ
た強誘電性液晶表示用材料に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel phenylpyrimidine derivative having an optically active oxazolidinone ring and a liquid crystal material containing the same, and more particularly to a ferroelectric liquid crystal display material excellent in responsiveness and memory property.

【0002】[0002]

【従来の技術】液晶表示素子は、その優れた特徴(低電
圧駆動、低消費電力、薄型表示が可能、明るい場所でも
使用でき目が疲れない)等によって、現在広く用いられ
ている。しかしながら、そのうち最も一般的な表示方式
であるTN型においては、CRT等の他の発光型表示方
式と比較すると応答が極めて遅く、且つ印加電場を切っ
た場合の表示の記憶(メモリー効果)が得られないた
め、高速応答の必要な光シャッター、プリンターヘッ
ド、あるいは更に時分割駆動の必要なテレビなど動画面
への応用には多くの制約があり、必ずしも適した表示方
式とはいえなかった。
2. Description of the Related Art Liquid crystal display devices are widely used at present due to their excellent features (low voltage drive, low power consumption, thin display, can be used even in bright places, and eyes are not tired). However, in the TN type, which is the most general display method, the response is extremely slow compared with other light emitting display methods such as CRT, and the display memory (memory effect) is obtained when the applied electric field is cut off. Therefore, there are many restrictions on the application to moving screens such as an optical shutter that requires high-speed response, a printer head, or a television that requires time-division driving, and it cannot be said that it is a suitable display method.

【0003】最近になって、強誘電性液晶を用いる表示
方式が報告され、これによるとTN型液晶の100〜1
000倍という高速応答とメモリー効果とが得られるた
め、次世代液晶表示素子として期待され、現在盛んに研
究開発が進められている。
Recently, a display method using a ferroelectric liquid crystal has been reported, and according to this, a TN type liquid crystal display of 100-1 is used.
Since a high-speed response of 000 times and a memory effect can be obtained, it is expected as a next-generation liquid crystal display device, and research and development are being actively conducted at present.

【0004】強誘電性液晶の液晶相は、チルト系のキラ
ルスメクチック相に属するものであるが、そのうちキラ
ルスメクチックC(以下、SC*と省略する)相が最も
低粘性であり最も望ましい。
The liquid crystal phase of the ferroelectric liquid crystal belongs to the tilt type chiral smectic phase, but the chiral smectic C (hereinafter abbreviated as SC * ) phase has the lowest viscosity and is most desirable.

【0005】SC*相を示す液晶化合物は既に数多く合
成され検討されているが、強誘電性液晶表示素子として
用いるための以下の条件、即ち、(イ)室温を含む広い
温度範囲でSC*相を示すこと、(ロ)良好な配向性を
得るためにSC*相の高温側に適当な相系列を有し、且
つその螺旋ピッチが大きいこと、(ハ)適当なチルト角
を有すること、(ニ)粘性が小さいこと、(ホ)自発分
極がある程度大きいこと、(ヘ)高速応答を示すこと等
を単独で満足するような化合物は知られていない。その
ため、数種あるいはそれ以上の化合物を混合してSC*
相を示す液晶組成物(以下、SC*液晶組成物と省略す
る)として用いる必要がある。
A large number of liquid crystal compounds exhibiting the SC * phase have already been synthesized and studied, but the SC * phase in the following conditions for use as a ferroelectric liquid crystal display device, that is, (a) a wide temperature range including room temperature. (B) In order to obtain good orientation, the SC * phase has an appropriate phase series on the high temperature side, and its helical pitch is large, and (c) it has an appropriate tilt angle. D) A compound that alone satisfies the requirements of low viscosity, (e) large spontaneous polarization to some extent, and (f) fast response is not known. Therefore, mix several or more compounds to make SC *
It must be used as a liquid crystal composition showing a phase (hereinafter, abbreviated as SC * liquid crystal composition).

【0006】SC*液晶組成物の調製方法としては、ア
キラルな化合物からなり、スメクチックC(以下、SC
と省略する)相を示す母体液晶(以下、SC母体液晶と
省略する)に光学活性化合物からなるドーパントを、い
わゆるキラルドーパントとして添加する方法が、より低
粘性の組成物を得ることができ、高速応答が可能となる
ので、最も一般的である。
SC * A liquid crystal composition is prepared by using an achiral compound and smectic C (hereinafter referred to as SC
The method of adding a dopant composed of an optically active compound to a matrix liquid crystal exhibiting a phase (hereinafter, abbreviated as SC matrix liquid crystal) as a so-called chiral dopant can obtain a composition having a lower viscosity, Most common because it allows a response.

【0007】キラルドーパントとして用いる化合物は単
独では必ずしもSC*相を示す必要はなく、また液晶相
すら示す必要もないが、少量の添加で液晶組成物に充分
な自発分極を誘起することや、キラルドーパントとして
誘起する螺旋のピッチが充分大きいことなどの性質を示
すことが必要である。
The compound used as the chiral dopant does not necessarily have to exhibit the SC * phase or even the liquid crystal phase by itself, but a small amount of the compound can induce sufficient spontaneous polarization in the liquid crystal composition, and the chiral dopant. It is necessary to exhibit properties such as a sufficiently large pitch of the helix induced as a dopant.

【0008】キラルドーパントとして大きな自発分極を
誘起するためには、強い双極子モーメントを有する基
が、化合物分子の中心骨格(コア)及び不斉炭素になる
べく近接し、固定されていることが必要であることは既
に知られている。このような考えに基づき本発明者らは
一般式(II)
In order to induce a large spontaneous polarization as a chiral dopant, it is necessary that a group having a strong dipole moment is fixed as close as possible to the central skeleton (core) and asymmetric carbon of the compound molecule. It is already known that there is. Based on such an idea, the inventors of the present invention have general formula (II)

【0009】[0009]

【化2】 [Chemical 2]

【0010】(式中、R3はアルキル基又はアルコキシ
ル基を表わし、環Bは1個又は2個のフッ素原子により
置換されていてもよい1,4−フェニレン基又はトラン
ス−1,4−シクロヘキシレン基を表わし、R4はアル
キル基を表わす)で表わされる光学活性オキサゾリジノ
ン誘導体を合成し、この化合物を母体液晶に少量添加す
ることにより、充分大きな自発分極を誘起し、高速応答
性のSC*液晶組成物の調製が可能となることを見いだ
し、報告した。(日本化学会第61回春季年会予稿集2
127ページ及び特開平3−151371号公報)
(In the formula, R 3 represents an alkyl group or an alkoxyl group, and the ring B is a 1,4-phenylene group which may be substituted with one or two fluorine atoms or trans-1,4-cyclohexyl. A silene group and R 4 represents an alkyl group), and an optically active oxazolidinone derivative represented by the following formula is synthesized. By adding a small amount of this compound to the base liquid crystal, a sufficiently large spontaneous polarization is induced, and a high-speed response SC * It has been found and reported that the liquid crystal composition can be prepared. (The 61st Annual Meeting of the Chemical Society of Japan Proceedings 2
(Page 127 and Japanese Patent Laid-Open No. 3-151371)

【0011】[0011]

【発明が解決しようとする課題】以上のように、光学活
性オキサゾリジノン誘導体はキラルドーパントとして優
れた性質を有することが既に知られていたが、特にその
粘性を低下させ、応答性を更に改善することが要求され
ていた。
As described above, it has been already known that an optically active oxazolidinone derivative has excellent properties as a chiral dopant, but it is particularly desired to lower its viscosity and further improve its responsiveness. Was required.

【0012】ところで、SC(又はSC*)相を示しや
すい液晶骨格は数多く知られているが、代表的なものと
しては、安息香酸フェニル等のエステル型と、フェニル
ピリミジン型をあげることができる。この両者を比較す
るとフェニルピリミジン型の化合物のほうがより低粘性
であるので、特に母体液晶の構成材料として最もよく用
いられている。
By the way, many liquid crystal skeletons which easily show an SC (or SC * ) phase are known, and representative ones include ester type such as phenyl benzoate and phenylpyrimidine type. Comparing the two, the phenylpyrimidine type compound has a lower viscosity, and is therefore most often used as the constituent material of the base liquid crystal.

【0013】従って、キラルドーパント用光学活性化合
物においても、粘性を低下させるためには、エステル型
よりもフェニルピリミジン型が望ましいと考えられる。
本発明が解決しようとする課題は、光学活性なオキサゾ
リジノン環を有するフェニルピリミジン誘導体を提供
し、更に、それを含有し、高速応答の可能な強誘電性液
晶表示用材料を提供することにある。
Therefore, it is considered that even in the optically active compound for chiral dopant, the phenylpyrimidine type is more preferable than the ester type in order to reduce the viscosity.
The problem to be solved by the present invention is to provide a phenylpyrimidine derivative having an optically active oxazolidinone ring, and further to provide a ferroelectric liquid crystal display material containing the phenylpyrimidine derivative and capable of high-speed response.

【0014】[0014]

【課題を解決するための手段】[Means for Solving the Problems]

【0015】本発明は上記課題を解決するために、一般
式(I)
In order to solve the above-mentioned problems, the present invention has the general formula (I)

【0016】[0016]

【化3】 [Chemical 3]

【0017】(式中、R1はフッ素原子又は炭素原子数
1〜10のアルコキシル基により置換されていてもよい
炭素原子数1〜18のアルキル基を表わすが、好ましく
は炭素原子数4〜12の直鎖状アルキル基を表わす。X
は単結合又は−O−を表わし、mは0又は1を表わす
が、好ましくはm=0を表わす。環Aは1個又は2個の
フッ素原子により置換されていてもよい1,4−フェニ
レン基又はトランス−1,4−シクロヘキシレン基を表
わすが、好ましくは1,4−フェニレン基を表わす。R
2は炭素原子数1〜10のアルキル基を表わすが、好ま
しくは直鎖状アルキル基を表わす。オキサゾリジノン環
の5位の不斉炭素原子は、(R)又は(S)配置であ
る)で表わされる光学活性オキサゾリジノン環を有する
フェニルピリミジン誘導体を提供する。
(In the formula, R 1 represents an alkyl group having 1 to 18 carbon atoms which may be substituted by a fluorine atom or an alkoxyl group having 1 to 10 carbon atoms, preferably 4 to 12 carbon atoms. Represents a linear alkyl group of X.
Represents a single bond or -O-, m represents 0 or 1, and preferably m = 0. Ring A represents a 1,4-phenylene group or a trans-1,4-cyclohexylene group which may be substituted with one or two fluorine atoms, preferably a 1,4-phenylene group. R
2 represents an alkyl group having 1 to 10 carbon atoms, preferably a linear alkyl group. The asymmetric carbon atom at the 5-position of the oxazolidinone ring provides an phenylpyrimidine derivative having an optically active oxazolidinone ring represented by (R) or (S) configuration).

【0018】本発明はまた、この一般式(I)で表わさ
れる光学活性化合物を含有する液晶組成物を提供する。
The present invention also provides a liquid crystal composition containing the optically active compound represented by the general formula (I).

【0019】本発明の液晶組成物は、上記一般式(I)
の化合物の少なくとも1種を構成成分として含有するも
のであり、特に強誘電性液晶表示用として、主成分であ
るSC母体液晶中に、上記一般式(I)の化合物の少な
くとも1種を、キラルドーパントの一部又は全部として
含有するSC*液晶組成物が最も望ましい。
The liquid crystal composition of the present invention has the above general formula (I).
At least one of the compounds of formula (I) above is contained in the SC matrix liquid crystal as the main component, especially for displaying ferroelectric liquid crystals. Most preferred are SC * liquid crystal compositions containing as part or all of the dopant.

【0020】また、本発明の一般式(I)の化合物をネ
マチック液晶に少量添加することにより、TN型液晶と
していわゆるリバースドメインの防止に、あるいはST
N型液晶としての用途などに利用することもできる。
Further, by adding a small amount of the compound of the general formula (I) of the present invention to the nematic liquid crystal, the so-called reverse domain can be prevented as a TN type liquid crystal, or ST
It can also be used as an N-type liquid crystal.

【0021】本発明の一般式(I)の化合物は、例え
ば、次の製造方法に従って製造することができる。一般
式(III)
The compound of the general formula (I) of the present invention can be produced, for example, according to the following production method. General formula (III)

【0022】[0022]

【化4】 [Chemical 4]

【0023】(式中、R5は低級アルキル基を表わす)
で表わされる光学活性ベンズアミジン塩酸塩誘導体と、
一般式(IV)
(In the formula, R 5 represents a lower alkyl group)
An optically active benzamidine hydrochloride derivative represented by
General formula (IV)

【0024】[0024]

【化5】 [Chemical 5]

【0025】(式中、R1、X、m及び環Aは一般式
(I)におけると同じ意味を表わし、Meはメチル基を表
わす)で表わされるアクロレイン誘導体とを、アルコラ
ート等の塩基存在下に反応させることにより、一般式
(V)
(Wherein R 1 , X, m and ring A have the same meanings as in formula (I) and Me represents a methyl group) and an acrolein derivative in the presence of a base such as alcoholate. To give a compound of general formula (V)

【0026】[0026]

【化6】 [Chemical 6]

【0027】(式中、R1、X、m及び環Aは一般式
(I)、R5は一般式(III)におけると同じ意味を
それぞれ表わす)で表わされるフェニルピリミジン誘導
体を得ることができる。次に、この一般式(V)の化合
物をトリエチルアミン等の塩基存在下に、一般式(V
I)
A phenylpyrimidine derivative represented by the formula (wherein R 1 , X, m and ring A have the same meanings as in formula (I) and R 5 respectively) can be obtained. . Next, the compound of the general formula (V) is added to the compound of the general formula (V) in the presence of a base such as triethylamine.
I)

【0028】[0028]

【化7】 [Chemical 7]

【0029】(式中、R2は一般式(I)におけると同
じ意味を表わす)で表わされる光学活性オキシラン誘導
体と反応させることにより、一般式(I)の化合物を得
ることができる。
The compound of the general formula (I) can be obtained by reacting with an optically active oxirane derivative represented by the formula (wherein R 2 has the same meaning as in the general formula (I)).

【0030】ここで、原料として用いられる一般式(I
II)のベンズアミジン塩酸塩誘導体は、例えば、以下
のようにして製造できる。4−シアノアニリンを塩基存
在下に、クロロギ酸エチルと反応させて一般式(VI
I)のウレタン誘導体とし、次いで、エタノール中で塩
化水素と反応させてイミノエーテル誘導体とし、更にア
ンモニアガスを反応させることにより得ることができ
る。
Here, the general formula (I
The benzamidine hydrochloride derivative of II) can be produced, for example, as follows. 4-cyanoaniline is reacted with ethyl chloroformate in the presence of a base to give a compound of the general formula (VI
It can be obtained by preparing the urethane derivative of I), then reacting with hydrogen chloride in ethanol to form an imino ether derivative, and further reacting with ammonia gas.

【0031】[0031]

【化8】 [Chemical 8]

【0032】(式中、R5は一般式(III)における
と同じ意味を表わし、Etはエチル基を表わす。)また、
一般式(VI)の光学活性オキシラン誘導体は一部市販
されており、市販されていない化合物も、市販の光学活
性なエピクロロヒドリンから、容易に合成することがで
きる。
(In the formula, R 5 has the same meaning as in formula (III), and Et represents an ethyl group.)
A part of the optically active oxirane derivative of the general formula (VI) is commercially available, and a compound which is not commercially available can be easily synthesized from commercially available optically active epichlorohydrin.

【0033】あるいは、一般式(I)の化合物は、前記
製造方法の中間体である一般式(VII)のウレタン誘
導体から、例えば、以下のようにしても得ることができ
る。一般式(VII)の化合物を、トリエチルアミン等
の塩基存在下に一般式(VI)の光学活性オキシラン誘
導体と反応させて、光学活性な5−アルキル−3−(4
−シアノフェニル)オキサゾリジン−2−オンを得る。
これを、前記と同様にして、イミノエーテル誘導体を経
て、ベンズアミジン塩酸塩誘導体とした後、一般式(I
V)のアクロレイン誘導体と反応させることにより、本
発明の一般式(I)の化合物が得られる。
Alternatively, the compound of the general formula (I) can be obtained from the urethane derivative of the general formula (VII) which is an intermediate of the above-mentioned production method, for example, as follows. The compound of general formula (VII) is reacted with an optically active oxirane derivative of general formula (VI) in the presence of a base such as triethylamine to give an optically active 5-alkyl-3- (4
-Cyanophenyl) oxazolidin-2-one is obtained.
In the same manner as above, this was converted to a benzamidine hydrochloride derivative through an imino ether derivative, and then the compound of the general formula (I
By reacting with the acrolein derivative of V), the compound of the general formula (I) of the present invention is obtained.

【0034】[0034]

【化9】 [Chemical 9]

【0035】この時、オキサゾリジノン環が開裂した一
般式(VIII)
At this time, the general formula (VIII) in which the oxazolidinone ring is cleaved

【0036】[0036]

【化10】 [Chemical 10]

【0037】(式中、R1、X、m、環A及びR2は一般
式(I)におけると同じ意味を表わす)で表わされるア
ニリン誘導体が副成するが、これはクロロギ酸トリクロ
ロメチル等と反応させることにより、容易に一般式
(I)の化合物に導くことができる。
An aniline derivative represented by the formula (wherein R 1 , X, m, rings A and R 2 have the same meanings as in the general formula (I)) is by-produced, which is trichloromethyl chloroformate or the like. The compound of the general formula (I) can be easily obtained by reacting with.

【0038】上記のようにして、本発明の一般式(I)
の化合物を得ることができるが、これらに属する個々の
具体的な化合物は、融点などの相転移温度、赤外吸収ス
ペクトル(IR)、核磁気共鳴スペクトル(NMR)、
質量スペクトル(MS)等の手段により確認することが
できる。
As described above, the general formula (I) of the present invention is used.
Compounds of the above can be obtained, and the individual specific compounds belonging to these compounds include the phase transition temperature such as melting point, infrared absorption spectrum (IR), nuclear magnetic resonance spectrum (NMR),
It can be confirmed by means such as mass spectrum (MS).

【0039】斯くして得られた一般式(I)の化合物の
代表的なものの例を第1表に掲げる。
Table 1 shows typical examples of the compounds of the general formula (I) thus obtained.

【0040】[0040]

【表1】 [Table 1]

【0041】(表中、Crは結晶相を、N*はキラルネ
マチック相を、Iは等方性液体相を表わし、( )はそ
の相がモノトロピックな相であることを表わし、相転移
温度は数字の左側の相と右側の相間の転移温度を表わ
し、例えば、Cr139 N*は、結晶相とキラルネマ
チック相との間の転移温度が139℃であることを表わ
す。)
(In the table, Cr represents a crystalline phase, N * represents a chiral nematic phase, I represents an isotropic liquid phase, and () represents that the phase is a monotropic phase. Represents the transition temperature between the left phase and the right phase of the number, for example Cr139 N * represents the transition temperature between the crystalline phase and the chiral nematic phase is 139 ° C.)

【0042】これらの一般式(I)の化合物をSC母体
液晶に少量添加することにより、充分に大きい自発分極
を誘起して、高速応答が可能となる。例えば、第1表中
の(No.1)の化合物5重量%及びフェニルピリミジ
ン系の母体液晶95重量%からなるSC*液晶組成物の
25℃における自発分極は+10.5nC/cm2であり、
それを用いて作製した表示用セルでは55μ秒の高速応
答が確認された。これに対し、前述の一般式(II)で
表わされるエステル型化合物のうち、本発明に係わる
(No.1)の化合物と両末端基が同一である式(R)
By adding a small amount of the compound of the general formula (I) to the SC host liquid crystal, a sufficiently large spontaneous polarization is induced and a high speed response becomes possible. For example, the spontaneous polarization at 25 ° C. of an SC * liquid crystal composition comprising 5% by weight of the compound (No. 1) in Table 1 and 95% by weight of a phenylpyrimidine-based host liquid crystal is +10.5 nC / cm 2 ,
In the display cell manufactured using it, a high-speed response of 55 μsec was confirmed. On the other hand, among the ester type compounds represented by the above general formula (II), the compound of the formula (R) having the same terminal groups as those of the compound (No. 1) according to the present invention.

【0043】[0043]

【化11】 [Chemical 11]

【0044】の化合物5重量%及び同一の母体液晶95
重量%からなるSC*液晶組成物の25℃における自発
分極は+7.6nC/cm2であり、同様にして測定した応
答は70μ秒とかなり遅くなった。
5% by weight of the compound of and the same host liquid crystal 95
The spontaneous polarization of the SC * liquid crystal composition consisting of wt% at 25 ° C. was +7.6 nC / cm 2 , and the response measured in the same manner was considerably slowed to 70 μsec.

【0045】本発明の一般式(I)の化合物は一般式
(II)の化合物のエステル型の骨格を、フェニルピリ
ミジン型の骨格に置き換えたものであるが、置き換える
ことによって、応答性がかなり改善されていることが明
らかである。
The compound of the general formula (I) of the present invention is obtained by replacing the ester type skeleton of the compound of the general formula (II) with a phenylpyrimidine type skeleton. It is clear that it has been done.

【0046】更に、本発明の(No.1)の化合物10
重量%及び同じ母体液晶90重量%からなるSC*液晶
組成物を調製し、室温で長時間放置したところ、析出、
相分離は観察されなかった。これに対して、式(R)の
化合物10重量%及び同じ母体液晶90重量%からなる
SC*液晶組成物を調製し、室温で放置したところ、一
部で相分離が観察された。このことから、本発明の一般
式(I)の化合物は、類似化合物である一般式(II)
の化合物と比較して、他の液晶組成物、特にフェニルピ
リミジン系の母体液晶に対する相溶性に優れていること
が理解できる。
Further, the compound 10 of (No. 1) of the present invention
%, And 90% by weight of the same host liquid crystal, an SC * liquid crystal composition was prepared and left for a long time at room temperature to cause precipitation.
No phase separation was observed. On the other hand, when a SC * liquid crystal composition containing 10% by weight of the compound of formula (R) and 90% by weight of the same host liquid crystal was prepared and left standing at room temperature, phase separation was partially observed. From this, the compound of the general formula (I) of the present invention is a similar compound of the general formula (II)
It can be understood that the compound (3) has excellent compatibility with other liquid crystal compositions, in particular, a phenylpyrimidine-based host liquid crystal, as compared with the above compound.

【0047】前述のように、本発明の一般式(I)の化
合物は少量の添加でも充分大きい自発分極を誘起するこ
とができるので、母体液晶に対する添加量は総量で2%
程度以上あればよく、他のキラルドーパントと併用する
場合には更に少量でも可能である。
As described above, the compound of the general formula (I) of the present invention can induce a sufficiently large spontaneous polarization even if added in a small amount. Therefore, the total amount of the compound added to the host liquid crystal is 2%.
It is sufficient that the amount is at least a certain level, and when it is used in combination with other chiral dopant, a smaller amount is possible.

【0048】第1表から、一般式(I)の化合物は単独
ではSC*相を示さないものもあるが、添加によって組
成物のSC*相の上限温度を低下させる傾向はほとんど
なく、むしろ、逆にその上限温度を高める傾向を有す
る。
[0048] From Table 1, the compounds of general formula (I) is alone while others do not exhibit SC * phase, tends to reduce the maximum temperature of SC * phase of the composition by the addition is little, but rather, On the contrary, it tends to increase the maximum temperature.

【0049】また一般的に、少量の添加でも大きい自発
分極を誘起する光学活性化合物は、組成物のキラルネマ
チック(N*)相の温度範囲を狭くするか、あるいは消
失させやすく、スメクチックA(SA)相の温度範囲を
拡大する傾向の強いものが多い。このような化合物をキ
ラルドーパントとして用いた場合には、得られたSC *
液晶組成物はその相系列が高温域から、I(等方性液体
相)−SA−SC*となることが多い。
In general, even if added in a small amount, large spontaneous
An optically active compound that induces polarization is a chiral nemer of a composition.
Tick (N*) Narrow the phase temperature range or
It is easy to lose the temperature range of the smectic A (SA) phase.
Many of them have a strong tendency to expand. Such compounds
The SC obtained when used as a Lal dopant *
The liquid crystal composition has a phase sequence from the high temperature range to I (isotropic liquid).
Phase) -SA-SC*Often becomes.

【0050】また、母体液晶の粘性を低下させるため
に、その構成成分として、シクロヘキサン環を有する化
合物、あるいは両末端基がアルキル基であるような化合
物を用いることがあるが、このような化合物はやはり組
成物のSA相を拡大し、N*相を消失させやすい傾向を
有する。
Further, in order to reduce the viscosity of the base liquid crystal, a compound having a cyclohexane ring or a compound having both end groups being an alkyl group may be used as its constituent component. Again, it tends to expand the SA phase of the composition and eliminate the N * phase.

【0051】ところが、現在の配向技術では、SC*
晶組成物は高温域から、I−N*−SA−SC*の相系列
を示すことが最も望ましいとされている。本発明の一般
式(I)の化合物は広い温度範囲でN*相を示すため
に、それを添加することにより組成物のN*相の温度範
囲を狭くすることはなく、上記の望ましい相系列を得る
ことは極めて容易である。
However, in the current alignment technology, it is said that it is most desirable that the SC * liquid crystal composition exhibits a phase sequence of IN * SA * SC * from a high temperature range. Since the compound of the general formula (I) of the present invention shows the N * phase in a wide temperature range, the addition of the compound does not narrow the temperature range of the N * phase of the composition, Is very easy to obtain.

【0052】優れた配向性を得るためには、上記のI−
*−SA−SC*の相系列に加えて、N*及びSC*相、
特にN*相における螺旋のピッチが大きいことも重要で
ある。一般的に、螺旋ピッチを大きくするためには、誘
起する螺旋の向きが逆の光学活性化合物を添加すればよ
いわけであるが、一般式(I)の化合物の添加量は少な
くてすむので、その調整は比較的容易である。
In order to obtain excellent orientation, the above I-
In addition to the N * -SA-SC * phase sequence, N * and SC * phases,
In particular, it is important that the pitch of the spiral in the N * phase is large. In general, in order to increase the spiral pitch, it is sufficient to add an optically active compound in which the directions of the induced helices are opposite, but since the addition amount of the compound of the general formula (I) is small, The adjustment is relatively easy.

【0053】本発明の一般式(I)の化合物をドーパン
トとして添加する母体液晶に用いられるSC化合物とし
ては、例えば下記一般式(A)
As the SC compound used in the host liquid crystal to which the compound of the general formula (I) of the present invention is added as a dopant, for example, the following general formula (A) is used.

【0054】[0054]

【化12】 [Chemical 12]

【0055】(式中、Ra及びRbは直鎖状又は分岐状の
アルキル基、アルコキシル基、アルコキシカルボニル
基、アルカノイルオキシ基又はアルコキシカルボニルオ
キシ基を表わし、互いに同一であっても異なっていても
よい)で表わされるフェニルベンゾエート系化合物や一
般式(B)
(In the formula, R a and R b represent a linear or branched alkyl group, an alkoxyl group, an alkoxycarbonyl group, an alkanoyloxy group or an alkoxycarbonyloxy group, which may be the same or different from each other. Phenylbenzoate compound represented by the general formula (B)

【0056】[0056]

【化13】 [Chemical 13]

【0057】(式中、Ra及びRbは一般式(A)におけ
ると同じ意味を表わす)で表わされるピリミジン系化合
物をあげることができる。また一般式(A)、(B)を
含めて一般式(C)
Pyrimidine compounds represented by the formula (wherein R a and R b have the same meanings as in the general formula (A)) can be given. In addition, the general formula (C) including the general formulas (A) and (B)

【0058】[0058]

【化14】 [Chemical 14]

【0059】(式中、Ra及びRbは一般式(A)におけ
ると同じ意味を表わし、環L及び環Mはそれぞれ1,4
−フェニレン基、1,4−シクロヘキシレン基、ピリジ
ン−2,5−ジイル基、ピリミジン−2,5−ジイル
基、ピラジン−2,5−ジイル基、ピリダジン−3,6
−ジイル基、1,3−ジオキサン−2,5−ジイル基あ
るいはこれらのハロゲン置換体を表わし、互いに同一で
あっても異なっていてもよく、Zaは−COO−、−O
CO−、−CH2O−、−OCH2−、−CH2CH2−、
−C≡C−又は単結合を表わす)で表わされる化合物も
同様の目的に使用することができる。また、SC相の温
度範囲を高温域に拡大する目的には一般式(D)
(In the formula, R a and R b have the same meanings as in the general formula (A), and the ring L and the ring M are 1, 4 respectively.
-Phenylene group, 1,4-cyclohexylene group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, pyrazine-2,5-diyl group, pyridazine-3,6
Represents a -diyl group, a 1,3-dioxane-2,5-diyl group or a halogen-substituted product thereof, which may be the same or different, and Z a is -COO-, -O.
CO -, - CH 2 O - , - OCH 2 -, - CH 2 CH 2 -,
A compound represented by —C≡C— or a single bond) can be used for the same purpose. For the purpose of expanding the temperature range of the SC phase to a high temperature range, the general formula (D)

【0060】[0060]

【化15】 [Chemical 15]

【0061】(式中、Ra及びRbは一般式(A)におけ
ると同じ意味を表わし、環L、環M及び環Nは前記一般
式(C)における環L、環Mと同じ意味を表わし、互い
に同一であっても異なっていてもよく、Za及びZbはそ
れぞれ前記一般式(C)のZaと同じ意味を表わし、同
一であっても異なっていてもよい)で表わされる3環の
化合物を用いることができる。
(Wherein R a and R b have the same meanings as in formula (A), and ring L, ring M and ring N have the same meanings as ring L and ring M in formula (C). And may be the same or different from each other, and Z a and Z b each have the same meaning as Z a in the general formula (C), and may be the same or different). Tricyclic compounds can be used.

【0062】これらの化合物は混合してSC母体液晶と
して用いるのが効果的であるが、組成物としてSC相を
示せばよいのであって、個々の化合物については必ずし
もSC相を示す必要はない。
It is effective that these compounds are mixed and used as an SC host liquid crystal, but it is sufficient that the composition shows the SC phase, and the individual compounds do not necessarily have to show the SC phase.

【0063】こうして得られたSC母体液晶に本発明の
一般式(I)の化合物、及び必要とあれば他の光学活性
化合物をキラルドーパントとして加えることにより、容
易に室温を含む広い温度範囲でSC*相を示す液晶組成
物を得ることができる。
By adding the compound of the general formula (I) of the present invention and, if necessary, other optically active compound as a chiral dopant to the thus obtained SC host liquid crystal, it is easy to conduct SC in a wide temperature range including room temperature. * A liquid crystal composition exhibiting a phase can be obtained.

【0064】本発明の一般式(I)の化合物を、上記S
C母体液晶に添加して得られたSC*液晶組成物は、例
えば、2枚の透明ガラス電極間に1〜20μm程度の薄
膜として封入することにより、表示用セルとして使用で
きる。良好なコントラストを得るためには均一に配向し
たモノドメインとする必要があり、このため多くの方法
が試みられている。良好な配向性を示すためには、液晶
材料としては、高温側からI−N*−SA−SC*の相系
列を示し、N*相及びSC*相における螺旋ピッチを大き
くすることが必要であるが、前述のように本発明の一般
式(I)の化合物を用いた場合、そのような組成物を得
ることは容易である。
The compound of the general formula (I) of the present invention is converted into the above S
The SC * liquid crystal composition obtained by adding to the C host liquid crystal can be used as a display cell by enclosing it as a thin film of about 1 to 20 μm between two transparent glass electrodes. In order to obtain a good contrast, it is necessary to make the monodomain uniformly oriented, and many methods have been tried for this reason. In order to exhibit good orientation, it is necessary for the liquid crystal material to exhibit a phase sequence of IN * -SA-SC * from the high temperature side and to increase the helical pitch in the N * phase and SC * phase. However, as described above, when the compound of the general formula (I) of the present invention is used, it is easy to obtain such a composition.

【0065】[0065]

【実施例】以下に実施例をあげて、本発明を具体的に説
明するが、勿論本発明の主旨、及び適用範囲は、これら
の実施例により制限されるものではない。
EXAMPLES The present invention will be specifically described with reference to the following examples, but the gist and scope of the present invention are not limited by these examples.

【0066】なお、化合物の構造はNMR、IR、MS
及び元素分析により確認した。相転移温度の測定は温度
調節ステージを備えた偏光顕微鏡及び示差走査熱量計
(DSC)を併用して行った。IRにおける(KBr)
は錠剤成形による、(neat)は液膜による測定を表
わす。NMRにおけるCDCl3は溶媒を表わし、sは
1重線、dは2重線、tは3重線、quintetは5
重線を、mは多重線を、また、例えばdtは2重の3重
線を表わし、bは幅広い線を表わす。Jはカップリング
定数を表わす。MSにおけるM+は親ピークを表わし、
( )内の数値はそのピークの相対強度を表わす。組成
物中における「%」はすべて「重量%」を表わす。
The structures of the compounds are NMR, IR and MS.
And confirmed by elemental analysis. The phase transition temperature was measured by using a polarization microscope equipped with a temperature control stage and a differential scanning calorimeter (DSC) together. (KBr) in IR
Means tableting, and (neat) means liquid film measurement. CDCl 3 in NMR represents a solvent, s is a singlet, d is a doublet, t is a triplet, and quintet is 5
A heavy line, m is a multiple line, and, for example, dt is a double triplet, and b is a wide line. J represents a coupling constant. M + in MS represents the parent peak,
The numerical value in parentheses represents the relative intensity of the peak. All "%" in the composition represent "% by weight".

【0067】(参考例) 4−シアノフェニルカルバミ
ン酸エチルの合成
(Reference Example) Synthesis of ethyl 4-cyanophenylcarbamate

【0068】[0068]

【化16】 [Chemical 16]

【0069】4−シアノアニリン4.7gの水溶液20
0mlに、氷冷下、氷50gと10%水酸化ナトリウム
水溶液20mlを加え、更にクロロギ酸エチル2.3m
lを加えて2時間攪拌した。反応生成物をエーテル10
0mlで3回抽出し、抽出液を飽和食塩水50mlで2
回洗浄し、無水硫酸ナトリウムで乾燥した後、減圧濃縮
した。得られた残渣をシリカゲルカラムクロマトグラフ
ィー(ヘキサン/THF=2/1)を用いて精製して、
4−シアノフェニルカルバミン酸エチル5.0g(収率
66%)を得た。
4-cyanoaniline 4.7 g of an aqueous solution 20
Under ice cooling, 50 g of ice and 20 ml of 10% sodium hydroxide aqueous solution were added to 0 ml, and ethyl chloroformate 2.3 m was added.
1 was added and stirred for 2 hours. The reaction product was ether 10.
It was extracted 3 times with 0 ml, and the extract was diluted with 50 ml of saturated saline solution to 2 times.
The extract was washed twice, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue is purified by silica gel column chromatography (hexane / THF = 2/1),
5.0 g (yield 66%) of ethyl 4-cyanophenylcarbamate was obtained.

【0070】無色針状晶 融点 118℃ IR(KBr) 3330,2240(CN),172
0(CO),1600,1532,1320,122
2,1062,840cm-1 1 H NMR(CDCl3) δ 1.30(t,J=6
HZ,3H),4.20(q,J=6Hz,2H),
6.94(bs,1H),7.51(d,J=9Hz,
2H),7.61(d,J=9Hz,2H) MS m/z 190(M+,29),131(3
4),118(62),29(100)
Colorless needles melting point 118 ° C. IR (KBr) 3330,2240 (CN), 172
0 (CO), 1600, 1532, 1320, 122
2,1062,840 cm -1 1 H NMR (CDCl 3 ) δ 1.30 (t, J = 6)
HZ, 3H), 4.20 (q, J = 6Hz, 2H),
6.94 (bs, 1H), 7.51 (d, J = 9 Hz,
2H), 7.61 (d, J = 9 Hz, 2H) MS m / z 190 (M + , 29), 131 (3
4), 118 (62), 29 (100)

【0071】(実施例1) (R)−5−ヘキシル−3
−[4−(5−デシルピリミジン−2−イル)フェニ
ル]オキサゾリジン−2−オン(第1表中のNo.3の
化合物)の合成 (1−a) 4−(5−デシルピリミジン−2−イル)
フェニルカルバミン酸メチルの合成
Example 1 (R) -5-hexyl-3
Synthesis of-[4- (5-decylpyrimidin-2-yl) phenyl] oxazolidin-2-one (Compound No. 3 in Table 1) (1-a) 4- (5-decylpyrimidin-2- Ill)
Synthesis of methyl phenylcarbamate

【0072】[0072]

【化17】 [Chemical 17]

【0073】上記(参考例)で得られた4−シアノフェ
ニルカルバミン酸エチル1.14g(6ミリモル)の、
エタノール0.7ml、ジクロロメタン5ml、エーテ
ル10mlの混合溶液を塩化水素雰囲気下、室温で4日
間攪拌した。減圧濃縮した後、得られた残渣にメタノー
ル10mlを加え、アンモニアガス雰囲気下、室温で3
日間攪拌した。減圧濃縮した後、エーテル30mlを加
え、白色沈澱を濾別、乾燥して、4−(エトキシカルボ
ニルアミノ)ベンズアミジン塩酸塩1.3gを得た。こ
の4−(エトキシカルボニルアミノ)ベンズアミジン塩
酸塩0.24gと3−ジメチルアミノ−2−デシルプロ
ペナール0.36gとをナトリウム0.12gとメタノ
ール5mlより調製したナトリウムメトキシド−メタノ
ール溶液に加え、4時間加熱還流した。反応液を減圧濃
縮した後、得られた残渣に水を加え、反応生成物を酢酸
エチルで抽出した後、抽出液をシリカゲルカラムクロマ
トグラフィー(ヘキサン/酢酸エチル=3/1)を用い
て分離精製して、4−(5−デシルピリミジン−2−イ
ル)フェニルカルバミン酸メチル0.17g(収率46
%)を得た。
1.14 g (6 mmol) of ethyl 4-cyanophenylcarbamate obtained in the above (Reference Example)
A mixed solution of 0.7 ml of ethanol, 5 ml of dichloromethane, and 10 ml of ether was stirred at room temperature for 4 days in a hydrogen chloride atmosphere. After concentration under reduced pressure, 10 ml of methanol was added to the obtained residue, and the mixture was stirred at room temperature under ammonia gas atmosphere for 3 times.
It was stirred for a day. After concentration under reduced pressure, 30 ml of ether was added, the white precipitate was filtered off and dried to give 1.3 g of 4- (ethoxycarbonylamino) benzamidine hydrochloride. 0.24 g of this 4- (ethoxycarbonylamino) benzamidine hydrochloride and 0.36 g of 3-dimethylamino-2-decylpropenal were added to a sodium methoxide-methanol solution prepared from 0.12 g of sodium and 5 ml of methanol. Heated to reflux for hours. The reaction mixture was concentrated under reduced pressure, water was added to the obtained residue, the reaction product was extracted with ethyl acetate, and the extract was separated and purified using silica gel column chromatography (hexane / ethyl acetate = 3/1). Then, 0.17 g of methyl 4- (5-decylpyrimidin-2-yl) phenylcarbamate (yield 46
%) Was obtained.

【0074】無色針状晶 融点 108℃ IR(KBr) 3380,2950,1720(C
O),1530,1440,1240,1080,80
0cm-1 1 H NMR(CDCl3) δ 0.88(t,J=
7.0Hz,3H),1.2〜1.4(m,14H),
1.64(quintet,J=7.6Hz,2H),
2.61(t,J=7.8Hz,2H),3.80
(s,3H),6.74(s,1H),7.50(d,
J=8.8Hz,2H),8.37(d,J=8.8H
z,2H),8.59(s,2H) MS m/z 369(M+,100),337(5
0),243(56) 224(86),210(9
5),43(73) 高分解能 MS(M+) C223132として 計算値(m/z) 369.2413 実測値(m/z) 369.2410
Colorless needles melting point 108 ° C. IR (KBr) 3380, 2950, 1720 (C
O), 1530, 1440, 1240, 1080, 80
0 cm −1 1 H NMR (CDCl 3 ) δ 0.88 (t, J =
7.0 Hz, 3H), 1.2 to 1.4 (m, 14H),
1.64 (quintet, J = 7.6Hz, 2H),
2.61 (t, J = 7.8Hz, 2H), 3.80
(S, 3H), 6.74 (s, 1H), 7.50 (d,
J = 8.8Hz, 2H), 8.37 (d, J = 8.8H
z, 2H), 8.59 (s, 2H) MS m / z 369 (M + , 100), 337 (5
0), 243 (56) 224 (86), 210 (9)
5), 43 (73) High-resolution MS (M + ) C 22 H 31 N 3 O 2 Calculated value (m / z) 369.2413 Measured value (m / z) 369.2410

【0075】(1−b) (R)−5−ヘキシル−3−
[4−(5−デシルピリミジン−2−イル)フェニル]
オキサゾリジン−2−オンの合成
(1-b) (R) -5-hexyl-3-
[4- (5-decylpyrimidin-2-yl) phenyl]
Synthesis of oxazolidin-2-one

【0076】[0076]

【化18】 [Chemical 18]

【0077】4−(5−デシルピリミジン−2−イル)
フェニルカルバミン酸メチル170mg(0.3ミリモ
ル)に、トリエチルアミン0.02ml(0.1ミリモ
ル)と(R)−1,2−エポキシオクタン0.09ml
(0.6ミリモル)を加え、封管中、100℃で24時
間反応させた。反応液をシリカゲルカラムクロマトグラ
フィー(ヘキサン/酢酸エチル=5/1)を用いて分離
精製して、(R)−5−ヘキシル−3−[4−(5−デ
シルピリミジン−2−イル)フェニル]オキサゾリジン
−2−オン70mg(収率51%)を得た。更にヘキサ
ン/エタノール=20/1混合溶媒から再結晶させて、
精製物26mg(収率19%,>99%ee)を得た。
4- (5-decylpyrimidin-2-yl)
To 170 mg (0.3 mmol) of methyl phenylcarbamate, 0.02 ml (0.1 mmol) of triethylamine and 0.09 ml of (R) -1,2-epoxyoctane
(0.6 mmol) was added, and the mixture was reacted at 100 ° C. for 24 hours in a sealed tube. The reaction mixture was separated and purified using silica gel column chromatography (hexane / ethyl acetate = 5/1) to give (R) -5-hexyl-3- [4- (5-decylpyrimidin-2-yl) phenyl]. 70 mg (yield 51%) of oxazolidin-2-one was obtained. Further recrystallize from a mixed solvent of hexane / ethanol = 20/1,
26 mg (yield 19%,> 99% ee) of a purified product was obtained.

【0078】無色針状晶 相転移温度(℃) Cr117 N*128 I [α]D +40.0゜ (c=0.57,CHCl3,20
℃) IR(KBr) 2930,2860,1730(C
O),1610,1430,1410,1225,80
0cm-1 1 H NMR(CDCl3) δ 0.88(t,J=
7.0Hz,3H),0.90(t,J=7.0Hz,
3H),1.2〜1.6(m,22H),1.65(q
uintet,J=7.5Hz,2H),1.75(d
dt,J=13.9,10.1,and5.4Hz,1
H),1.84〜1.93(m,1H),2.62
(t,J=7.8Hz,2H),3.72(dd,J=
8.7and7.0Hz,1H),4.15(t,J=
8.7Hz,1H),4.67(dtd,J=8.2,
7.3,and5.8Hz,1H),7.66(d,J
=9.0Hz,2H),8.43(d,J=9.0H
z,2H),8.60(s,2H) MS m/z 465(M+,100),337(4
5),210(31),43(67) 元素分析:C294332として 計算値:C,74.80%;H,9.31%;N,9.
02% 実測値:C,74.52%;H,9.33%;N,8.
95%
Colorless needle crystal phase transition temperature (° C.) Cr117 N * 128 I [α] D + 40.0 ° (c = 0.57, CHCl 3 , 20)
℃) IR (KBr) 2930, 2860, 1730 (C
O), 1610, 1430, 1410, 1225, 80
0 cm −1 1 H NMR (CDCl 3 ) δ 0.88 (t, J =
7.0Hz, 3H), 0.90 (t, J = 7.0Hz,
3H), 1.2 to 1.6 (m, 22H), 1.65 (q
uintet, J = 7.5 Hz, 2H), 1.75 (d
dt, J = 13.9, 10.1, and 5.4 Hz, 1
H), 1.84 to 1.93 (m, 1H), 2.62
(T, J = 7.8 Hz, 2H), 3.72 (dd, J =
8.7 and 7.0 Hz, 1H), 4.15 (t, J =
8.7 Hz, 1 H), 4.67 (dtd, J = 8.2,
7.3 and and 5.8 Hz, 1 H), 7.66 (d, J
= 9.0 Hz, 2H), 8.43 (d, J = 9.0H)
z, 2H), 8.60 (s, 2H) MS m / z 465 (M + , 100), 337 (4
5), 210 (31), 43 (67) Elemental analysis: Calculated as C 29 H 43 N 3 O 2 : C, 74.80%; H, 9.31%; N, 9.
02% Found: C, 74.52%; H, 9.33%; N, 8.
95%

【0079】(実施例2) (R)−5−ヘキシル−3
−[4−(5−オクチルピリミジン−2−イル)フェニ
ル]オキサゾリジン−2−オン(第1表中のNo.2の
化合物)の合成 (2−a) (5)−5−ヘキシル−3−(4−シアノ
フェニル)オキサゾリジン−2−オンの合成
Example 2 (R) -5-hexyl-3
Synthesis of-[4- (5-octylpyrimidin-2-yl) phenyl] oxazolidin-2-one (Compound No. 2 in Table 1) (2-a) (5) -5-hexyl-3- Synthesis of (4-cyanophenyl) oxazolidin-2-one

【0080】[0080]

【化19】 [Chemical 19]

【0081】4−シアノフェニルカルバミン酸エチル
2.1g(11ミリモル)にトリエチルアミン0.06
ml(0.5ミリモル)と(R)−1,2−エポキシオ
クタン2.3ml(15ミリモル)を加え、封管中、1
00℃で13時間反応させた。反応生成物をエタノール
から再結晶させて、(R)−5−ヘキシル−3−(4−
シアノフェニル)オキサゾリジン−2−オン1.9g
(収率63%、88%ee)を得た。
To 2.1 g (11 mmol) of ethyl 4-cyanophenylcarbamate was added 0.06 of triethylamine.
ml (0.5 mmol) and (R) -1,2-epoxyoctane 2.3 ml (15 mmol) were added, and in a sealed tube, 1
The reaction was carried out at 00 ° C for 13 hours. The reaction product was recrystallized from ethanol to give (R) -5-hexyl-3- (4-
Cyanophenyl) oxazolidin-2-one 1.9 g
(Yield 63%, 88% ee) was obtained.

【0082】無色針状晶 融点 78℃ [α]D +53.1゜ (c=0.61,CHCl3,20
℃) IR(KBr) 2950,1740(CO),152
0,1430,1410,1225,835cm-1 1 H NMR(CDCl3) δ 0.90(t,J=7
Hz,3H),1.2〜1.6(m,8H),1.75
(ddt,J=14.0,10.0,and5.4H
z,1H),1.82〜1.93(m,1H),3.6
6(dd,J=8.7and7.2Hz,1H),4.
11(t,J=8.6Hz,1H),4.68(dt
d,J=8.5,7.3,and5.6Hz,1H),
7.65(d,J=9Hz,2H),7.80(d,J
=9Hz,2H) MS m/z 272(M+,26),157(5
2),144(100),131(69),102(3
8),41(35) 元素分析:C162022として 計算値:C,70.56%;H,7.40%;N,1
0.29% 実測値:C,70.37%;H,7.33%;N,1
0.24%
Colorless needles melting point 78 ° C. [α] D + 53.1 ° (c = 0.61, CHCl 3 , 20
° C) IR (KBr) 2950, 1740 (CO), 152
0, 1430, 1410, 1225, 835 cm -1 1 H NMR (CDCl 3 ) δ 0.90 (t, J = 7)
Hz, 3H), 1.2 to 1.6 (m, 8H), 1.75
(Ddt, J = 14.0, 10.0, and 5.4H
z, 1H), 1.82-1.93 (m, 1H), 3.6.
6 (dd, J = 8.7 and 7.2 Hz, 1H), 4.
11 (t, J = 8.6 Hz, 1 H), 4.68 (dt
d, J = 8.5, 7.3, and 5.6 Hz, 1H),
7.65 (d, J = 9 Hz, 2H), 7.80 (d, J
= 9 Hz, 2H) MS m / z 272 (M + , 26), 157 (5
2), 144 (100), 131 (69), 102 (3
8), 41 (35) Elemental analysis: Calculated as C 16 H 20 N 2 O 2 C: 70.56%; H, 7.40%; N, 1
0.29% Found: C, 70.37%; H, 7.33%; N, 1
0.24%

【0083】(2−b) (R)−5−ヘキシル−3−
[4−(5−オクチルピリミジン−2−イル)フェニ
ル]オキサゾリジン−2−オンの合成(1)
(2-b) (R) -5-hexyl-3-
Synthesis of [4- (5-octylpyrimidin-2-yl) phenyl] oxazolidin-2-one (1)

【0084】[0084]

【化20】 [Chemical 20]

【0085】上記(2−a)で得た(R)−5−ヘキシ
ル−3−(4−シアノフェニル)オキサゾリジン−2−
オン1.6g(6ミリモル)を、エタノール0.7m
l、ジクロロメタン5ml及びエーテル10mlの混合
溶液に、塩化水素雰囲気下、室温で3日間攪拌した。反
応液を減圧濃縮した後、得られた残渣にメタノール10
mlを加え、アンモニアガス雰囲気下、室温で3日間攪
拌した。反応液を減圧濃縮した後、得られた残渣にエー
テル30mlを加え、析出した白色沈澱を濾別して乾燥
し、4−[(R)−5−ヘキシルオキサゾリジン−2−
オン−3−イル]ベンズアミジン塩酸塩1.5gを得
た。この4−[(R)−5−ヘキシルオキサゾリジン−
2−オン−3−イル]ベンズアミジン塩酸塩0.65g
に、3−ジメチルアミノ−2−オクチルプロペナール
0.63g、メタノール5mlを加え、更にナトリウム
0.23gとメタノール10mlより調製したナトリウ
ムメトキシド−メタノール溶液を加え、4時間加熱還流
した。反応液を減圧濃縮した後、得られた残渣に水を加
え、反応生成物を酢酸エチルで抽出した後、シリカゲル
カラムクロマトグラフィー(ヘキサン/酢酸エチル=3
/1)を用いて分離精製して、(R)−5−ヘキシル−
3−[4−(5−オクチルピリミジン−2−イル)フェ
ニル]オキサゾリジン−2−オン0.23g(収率26
%、86%ee)、及び[(R)−2−ヒドロキシオク
チル][4−(5−オクチルピリミジン−2−イル)フ
ェニル]アミン0.11g(収率13%)を得た。
(R) -5-hexyl-3- (4-cyanophenyl) oxazolidine-2-obtained in the above (2-a)
1.6 g (6 mmol) of ON was 0.7 m of ethanol
1, a mixed solution of 5 ml of dichloromethane and 10 ml of ether was stirred at room temperature under a hydrogen chloride atmosphere for 3 days. After the reaction solution was concentrated under reduced pressure, methanol 10 was added to the resulting residue.
ml was added, and the mixture was stirred at room temperature for 3 days under an ammonia gas atmosphere. The reaction mixture was concentrated under reduced pressure, 30 ml of ether was added to the obtained residue, the white precipitate was filtered off and dried, and 4-[(R) -5-hexyloxazolidine-2-
1.5 g of on-3-yl] benzamidine hydrochloride was obtained. This 4-[(R) -5-hexyloxazolidine-
2-on-3-yl] benzamidine hydrochloride 0.65 g
To the above, 0.63 g of 3-dimethylamino-2-octylpropenal and 5 ml of methanol were added, and a sodium methoxide-methanol solution prepared from 0.23 g of sodium and 10 ml of methanol was further added, and the mixture was heated under reflux for 4 hours. The reaction mixture was concentrated under reduced pressure, water was added to the obtained residue, the reaction product was extracted with ethyl acetate, and then silica gel column chromatography (hexane / ethyl acetate = 3).
/ R) -5-hexyl-
0.23 g of 3- [4- (5-octylpyrimidin-2-yl) phenyl] oxazolidin-2-one (yield 26
%, 86% ee), and 0.11 g of [(R) -2-hydroxyoctyl] [4- (5-octylpyrimidin-2-yl) phenyl] amine (yield 13%).

【0086】(R)−5−ヘキシル−3−[4−(5−
オクチルピリミジン−2−イル)フェニル]オキサゾリ
ジン−2−オンをヘキサン/エーテル=2/1混合溶媒
から再結晶させて、精製物40mg(93%ee)を得
た。
(R) -5-hexyl-3- [4- (5-
Octylpyrimidin-2-yl) phenyl] oxazolidin-2-one was recrystallized from a mixed solvent of hexane / ether = 2/1 to obtain 40 mg (93% ee) of a purified product.

【0087】(R)−5−ヘキシル−3−[4−(5−
オクチルピリミジン−2−イル)フェニル]オキサゾリ
ジン−2−オン 無色針状晶 相転移温度(℃) Cr125 (N*123) I [α]D +39.1゜ (c=0.65,CHCl3,20
℃) IR(KBr) 2920,1740(CO),161
0,1430,1410,1225,800cm-1 1 H NMR(CDCl3) δ 0.88(t,J=
7.0Hz,3H),0.90(t,J=6.9Hz,
3H),1.2〜1.6(m,18H),1.65(q
uintet,J=6.9Hz,2H),1.75(d
dt,J=13.9,10.1,and5.4Hz,1
H),1.84〜1.93(m,1H),2.61
(t,J=7.3Hz,2H),3.72(dd,J=
8.7and7.3Hz,1H),4.15(t,J=
8.7Hz,1H),4.66(dtd,J=8.2,
7.3,and5.7Hz,1H),7.67(d,J
=9.0Hz,2H),8.43(d,J=9.0H
z,2H),8.60(s,2H) MS m/z 437(M+,100),309(5
0),296(23),43(28) 元素分析:C273932として 計算値:C,74.10%;H,8.98%;N,9.
60% 実測値:C,74.02%;H,8.93%;N,9.
83%
(R) -5-hexyl-3- [4- (5-
Octylpyrimidin-2-yl) phenyl] oxazolidin-2-one colorless needles phase transition temperature (° C) Cr125 (N * 123) I [α] D + 39.1 ° (c = 0.65, CHCl 3 , 20)
° C) IR (KBr) 2920, 1740 (CO), 161
0, 1430, 1410, 1225, 800 cm -1 1 H NMR (CDCl 3 ) δ 0.88 (t, J =
7.0 Hz, 3 H), 0.90 (t, J = 6.9 Hz,
3H), 1.2 to 1.6 (m, 18H), 1.65 (q
uintet, J = 6.9 Hz, 2H), 1.75 (d
dt, J = 13.9, 10.1, and 5.4 Hz, 1
H), 1.84 to 1.93 (m, 1H), 2.61
(T, J = 7.3 Hz, 2H), 3.72 (dd, J =
8.7 and 7.3 Hz, 1H), 4.15 (t, J =
8.7 Hz, 1 H), 4.66 (dtd, J = 8.2,
7.3 and and 5.7 Hz, 1H), 7.67 (d, J
= 9.0 Hz, 2H), 8.43 (d, J = 9.0H)
z, 2H), 8.60 (s, 2H) MS m / z 437 (M + , 100), 309 (5
0), 296 (23), 43 (28) Elemental analysis: C 27 H 39 N 3 O 2 Calculated: C, 74.10%; H, 8.98%; N, 9.
60% Found: C, 74.02%; H, 8.93%; N, 9.
83%

【0088】[(R)−2−ヒドロキシオクチル][4
−(5−オクチルピリミジン−2−イル)フェニル]ア
ミン 無色針状晶 融点 80℃ [α]D −11.0゜ (c=0.31,CHCl3,20
℃) IR(KBr) 3350,3200,2930,16
10,1590,1420,1340,1180,80
0cm-1 1 H NMR(CDCl3) δ 0.88(t,J=
7.0Hz,3H),0.90(t,J=6.9Hz,
3H),1.2〜1.6(m,20H),1.63(q
uintet,J=6.9Hz,2H),1.90
(d,J=4.4Hz,1H),2.57(t,J=
7.5Hz,2H),3.08(dd,J=12.9a
nd8.4Hz,1H),3.34(dd,J=12.
9and3.2Hz,1H),3.82〜3.91
(m,1H),4.32(bs,1H),6.70
(d,J=8.9Hz,2H),8.24(d,J=
8.9Hz,2H),8.52(s,2H) MS m/z 411(M+,24),296(10
0),43(23) 元素分析:C26413Oとして 計算値:C,75.87%;H,10.04%;N,1
0.21% 実測値:C,75.99%;H, 9.92%;N,1
0.20%
[(R) -2-hydroxyoctyl] [4
- (5-octyl-2-yl) phenyl] amine gave colorless needles, mp 80 ℃ [α] D -11.0 ° (c = 0.31, CHCl 3, 20
° C) IR (KBr) 3350, 3200, 2930, 16
10, 1590, 1420, 1340, 1180, 80
0 cm −1 1 H NMR (CDCl 3 ) δ 0.88 (t, J =
7.0 Hz, 3 H), 0.90 (t, J = 6.9 Hz,
3H), 1.2 to 1.6 (m, 20H), 1.63 (q
uintet, J = 6.9 Hz, 2H), 1.90
(D, J = 4.4 Hz, 1H), 2.57 (t, J =
7.5 Hz, 2H), 3.08 (dd, J = 12.9a
nd 8.4 Hz, 1 H), 3.34 (dd, J = 12.
9 and 3.2 Hz, 1H), 3.82 to 3.91.
(M, 1H), 4.32 (bs, 1H), 6.70
(D, J = 8.9 Hz, 2H), 8.24 (d, J =
8.9 Hz, 2H), 8.52 (s, 2H) MS m / z 411 (M + , 24), 296 (10
0), 43 (23) Elemental analysis: as C 26 H 41 N 3 O Calculated value: C, 75.87%; H, 10.04%; N, 1
0.21% Found: C, 75.99%; H, 9.92%; N, 1
0.20%

【0089】(2−c) (R)−5−ヘキシル−3−
[4−(5−オクチルピリミジン−2−イル)フェニ
ル]オキサゾリジン−2−オンの合成(2)
(2-c) (R) -5-hexyl-3-
Synthesis of [4- (5-octylpyrimidin-2-yl) phenyl] oxazolidin-2-one (2)

【0090】[0090]

【化21】 [Chemical 21]

【0091】クロロギ酸トリクロロメチル0.05ml
のTHF溶液を60℃で4時間加熱攪拌した後、上記
(2−b)で得た[(R)−2−ヒドロキシオクチル]
[4−(5−オクチルピリミジン−2−イル)フェニ
ル]アミン82mg(0.2ミリモル)を加え、40℃
で一晩加熱攪拌した。減圧濃縮した後、得られた残渣を
薄層クロマトグラフィーを用いて分離精製して、(R)
−5−ヘキシル−3−[4−(5−オクチルピリミジン
−2−イル)フェニル]オキサゾリジン−2−オン54
mg(収率62%)を得た。
Trichloromethyl chloroformate 0.05 ml
The THF solution of was heated and stirred at 60 ° C. for 4 hours, and then obtained in (2-b) above [(R) -2-hydroxyoctyl].
82 mg (0.2 mmol) of [4- (5-octylpyrimidin-2-yl) phenyl] amine was added, and the mixture was added at 40 ° C.
The mixture was heated and stirred overnight. After concentration under reduced pressure, the resulting residue was separated and purified using thin layer chromatography to obtain (R)
-5-hexyl-3- [4- (5-octylpyrimidin-2-yl) phenyl] oxazolidin-2-one 54
mg (yield 62%) was obtained.

【0092】(実施例3) (R)−5−ヘキシル−3
−[4−(5−オクチルオキシピリミジン−2−イル)
フェニル]オキサゾリジン−2−オン(第1表中のN
o.1の化合物)の合成
Example 3 (R) -5-hexyl-3
-[4- (5-octyloxypyrimidin-2-yl)
Phenyl] oxazolidin-2-one (N in Table 1
o. Compound 1)

【0093】[0093]

【化22】 [Chemical formula 22]

【0094】前記(2−b)で得た4−[(R)−5−
ヘキシルオキサゾリジン−2−オン−3−イル]ベンズ
アミジン塩酸塩81mgに3−ジメチルアミノ−2−オ
クチルオキシプロペナール230mg,メタノール1m
lを加え、更にナトリウム30mgとメタノール1ml
から調製したナトリウムメトキシド−メタノール溶液を
加え、4時間加熱還流した。減圧濃縮した後、得られた
残渣に水を加え、反応生成物を酢酸エチルで抽出した
後、シリカゲルカラムクロマトグラフィー(ヘキサン/
酢酸エチル=5/1)を用いて分離精製して、(R)−
5−ヘキシル−3−[4−(5−オクチルオキシピリミ
ジン−2−イル)フェニル]オキサゾリジン−2−オン
21mg(収率18%、89%ee)を得た。更にヘキ
サン/エタノール=15/1の混合溶媒から再結晶させ
て、精製物5mg(94%ee)を得た。
4-[(R) -5 obtained in (2-b) above
Hexyloxazolidin-2-on-3-yl] benzamidine hydrochloride 81 mg to 3-dimethylamino-2-octyloxypropenal 230 mg, methanol 1 m
1 was added, and further sodium 30 mg and methanol 1 ml
The sodium methoxide-methanol solution prepared from the above was added, and the mixture was heated under reflux for 4 hours. After concentration under reduced pressure, water was added to the obtained residue and the reaction product was extracted with ethyl acetate, followed by silica gel column chromatography (hexane / hexane).
Separation and purification using ethyl acetate = 5/1), (R)-
21 mg (yield 18%, 89% ee) of 5-hexyl-3- [4- (5-octyloxypyrimidin-2-yl) phenyl] oxazolidin-2-one were obtained. Further, recrystallization from a mixed solvent of hexane / ethanol = 15/1 gave 5 mg (94% ee) of a purified product.

【0095】無色針状晶 相転移温度(℃) Cr139 N*156 I [α]D +37.30゜ (c=0.52,CHCl3,2
0℃) IR(KBr) 2940,1740(CO),144
0,1280,790cm-1 1 H NMR(CDCl3) δ 0.88(t,J=
7.0Hz,3H),0.90(t,J=7.0Hz,
3H),1.2〜1.6(m,18H),1.74(d
dt,J=14.0,10.1,and5.4Hz,1
H),1.80〜1.93(m,3H),3.71(d
d,J=8.7and7.3Hz,1H),4.09
(t,J=6.5Hz,2H),4.14(t,J=
8.7Hz,1H),4.66(dtd,J=8.2,
7.0,and5.6Hz,1H),7.65(d,J
=9.0Hz,2H),8.36(d,J=9.0H
z,2H),8.44(s,2H) MS m/z 453(M+,14),167(3
6),149(100),71(32),43(61) 高分解能 MS(M+) C273933として 計算値(m/z)453.2990 実測値(m/z)453.2992
Colorless Needle Crystal Phase Transition Temperature (° C.) Cr139 N * 156 I [α] D + 37.30 ° (c = 0.52, CHCl 3 , 2)
0 ° C.) IR (KBr) 2940,1740 (CO), 144
0,1280,790 cm −1 1 H NMR (CDCl 3 ) δ 0.88 (t, J =
7.0Hz, 3H), 0.90 (t, J = 7.0Hz,
3H), 1.2 to 1.6 (m, 18H), 1.74 (d
dt, J = 14.0, 10.1, and 5.4 Hz, 1
H), 1.80 to 1.93 (m, 3H), 3.71 (d
d, J = 8.7 and 7.3 Hz, 1H), 4.09
(T, J = 6.5 Hz, 2H), 4.14 (t, J =
8.7 Hz, 1 H), 4.66 (dtd, J = 8.2,
7.0, and 5.6 Hz, 1H), 7.65 (d, J
= 9.0 Hz, 2H), 8.36 (d, J = 9.0H)
z, 2H), 8.44 (s, 2H) MS m / z 453 (M + , 14), 167 (3
6), 149 (100), 71 (32), 43 (61) High resolution MS (M + ) C 27 H 39 N 3 O 3 Calculated value (m / z) 453.2990 Measured value (m / z) 453.2992

【0096】(実施例4) SC*液晶組成物の調製 以下の組成からなるSC母体液晶(H−1)を調製し
た。
Example 4 Preparation of SC * Liquid Crystal Composition An SC host liquid crystal (H-1) having the following composition was prepared.

【0097】[0097]

【化23】 [Chemical formula 23]

【0098】この母体液晶の相転移温度は以下の通りで
あった。 相転移温度(℃) Cr12.5 SC55.5 SA6
4.5 N70 I この母体液晶(H−1)95%及び第1表中のNo.1
の化合物5%からなるSC*液晶組成物(M−1)を調
製した。その相転移温度は以下の通りであった。 相転
移温度(℃) SC*63 SA64 N*71.5 I 従って、(No.1)の化合物はSC*相の上限温度を
上昇させるとともに、SA相の温度範囲をむしろ狭くす
る効果を有することが明らかである。なお、融点は明確
でなかった。
The phase transition temperature of this host liquid crystal was as follows. Phase transition temperature (° C) Cr12.5 SC55.5 SA6
4.5 N70 I This matrix liquid crystal (H-1) 95% and No. 1 in Table 1. 1
SC * liquid crystal composition (M-1) consisting of 5% of the compound of Example 1 was prepared. The phase transition temperature was as follows. Phase transition temperature (° C) SC * 63 SA64 N * 71.5 I Therefore, the compound of (No. 1) has the effect of raising the upper limit temperature of the SC * phase and narrowing the temperature range of the SA phase rather. Is clear. The melting point was not clear.

【0099】同様にして、SC母体液晶(H−1)98
%及び(No.1)の化合物2%からなるSC*液晶組
成物(M−2)を調製した。その相転移温度は以下の通
りであった。
Similarly, SC matrix liquid crystal (H-1) 98
% And a 2% compound of (No. 1), a SC * liquid crystal composition (M-2) was prepared. The phase transition temperature was as follows.

【0100】相転移温度(℃) SC*59.5 SA6
5 N*70 I 同様にして、SC母体液晶(H−1)97%及び(N
o.2)の化合物3%からなるSC*液晶組成物(M−
3)を調製した。その相転移温度は以下の通りであっ
た。
Phase transition temperature (° C.) SC * 59.5 SA6
5 N * 70 I Similarly, SC matrix liquid crystal (H-1) 97% and (N
o. SC * liquid crystal composition (M-
3) was prepared. The phase transition temperature was as follows.

【0101】相転移温度(℃) SC*59.5 SA6
4 N*69.5 I 同様にして、SC母体液晶(H−1)95%及び(N
o.2)の化合物5%からなるSC*液晶組成物(M−
4)を調製した。その相転移温度は以下の通りであっ
た。
Phase Transition Temperature (° C.) SC * 59.5 SA6
4 N * 69.5 I Similarly, SC host liquid crystal (H-1) 95% and (N
o. SC * liquid crystal composition (M-
4) was prepared. The phase transition temperature was as follows.

【0102】相転移温度(℃) SC*61 SA61.
5 N*69.5 I 同様にして、SC母体液晶(H−1)95%及び(N
o.3)の化合物5%からなるSC*液晶組成物(M−
5)を調製した。その相転移温度は以下の通りであっ
た。
Phase transition temperature (° C.) SC * 61 SA61.
5 N * 69.5 I In the same manner, SC host liquid crystal (H-1) 95% and (N
o. SC * liquid crystal composition (M-
5) was prepared. The phase transition temperature was as follows.

【0103】相転移温度(℃) SC*61.5 SA6
4 N*69.5 I
Phase Transition Temperature (° C) SC * 61.5 SA6
4 N * 69.5 I

【0104】(実施例5) 液晶表示素子の作製 実施例4で得られたSC*液晶組成物(M−1)を等方
性液体(I)相まで加熱し、これを厚さ2μmの2枚の
透明電極板(ポリイミドコーティング−ラビングによる
配向処理を施してある)からなるガラスセルに充填し
て、表示用素子を作製した。これを室温まで徐冷したと
ころ、均一に配向したSC*相のセルが得られた。この
セルに電界強度10Vp-p/μm、50Hzの矩形波を
印加して、その電気光学的応答速度を測定したところ、
25℃で55μ秒という高速応答が確認できた。このと
きのチルト角は24.5゜であり、コントラストは非常
に良好であった。また、自発分極は+10.5nC/cm2
であった。
Example 5 Production of Liquid Crystal Display Device The SC * liquid crystal composition (M-1) obtained in Example 4 was heated to an isotropic liquid (I) phase, and this was heated to a thickness of 2 μm. A glass cell made of a sheet of transparent electrode plate (polyimide coating-aligned by rubbing) was filled to prepare a display element. When this was gradually cooled to room temperature, uniformly oriented SC * phase cells were obtained. A square wave of 50 Hz with an electric field strength of 10 V pp / μm was applied to this cell, and its electro-optical response speed was measured.
A high-speed response of 55 μsec at 25 ° C. was confirmed. At this time, the tilt angle was 24.5 °, and the contrast was very good. The spontaneous polarization is +10.5 nC / cm 2
Met.

【0105】同様にして、SC*液晶組成物(M−2)
〜(M−5)を用いて液晶表示用素子を作製したとこ
ろ、その特性は以下のとおりであった。 (M−2):応答106μ秒、チルト角25.3゜、自
発分極+3.0nC/cm2、コントラスト良好 (M−3):応答80μ秒、チルト角26.7゜、自発
分極+6.0nC/cm2、コントラスト良好 (M−4):応答42μ秒、チルト角26.0゜、自発
分極+12.3nC/cm2、コントラスト良好 (M−5):応答45μ秒、チルト角29.1゜、自発
分極+13.0nC/cm2、コントラスト良好
Similarly, SC * liquid crystal composition (M-2)
-(M-5) was used to manufacture a liquid crystal display element, the characteristics of which were as follows. (M-2): Response 106 μsec, tilt angle 25.3 °, spontaneous polarization +3.0 nC / cm 2 , good contrast (M-3): Response 80 μsec, tilt angle 26.7 °, spontaneous polarization +6.0 nC / Cm 2 , good contrast (M-4): response 42 μsec, tilt angle 26.0 °, spontaneous polarization +12.3 nC / cm 2 , good contrast (M-5): response 45 μsec, tilt angle 29.1 ° , Spontaneous polarization +13.0 nC / cm 2 , good contrast

【0106】(比較例)母体液晶(H−1)95%及び
光学活性オキサゾリジノン環を有するが、エステル系の
骨格を有する式(R)
Comparative Example Formula (R) having 95% of the base liquid crystal (H-1) and an optically active oxazolidinone ring, but having an ester-based skeleton

【0107】[0107]

【化24】 [Chemical formula 24]

【0108】の化合物5%からなるSC*液晶組成物
(N−1)を調製した。その相転移温度は以下の通りで
あった。 相転移温度(℃) SC*58.5 SA62 N*69
I 同様にしてセルを作製し、電気光学的特性を測定したと
ころ、応答は70μ秒と(M−1)に比べて遅くなっ
た。自発分極は+7.6nC/cm2であり、チルト角は2
7.5゜であった。
A SC * liquid crystal composition (N-1) comprising 5% of the compound of the above was prepared. The phase transition temperature was as follows. Phase transition temperature (° C) SC * 58.5 SA62 N * 69
I When a cell was prepared in the same manner and the electro-optical characteristics were measured, the response was 70 μsec, which was slower than that of (M-1). Spontaneous polarization is +7.6 nC / cm 2 and tilt angle is 2
It was 7.5 °.

【0109】[0109]

【発明の効果】本発明の一般式(I)で表わされる光学
活性オキサゾリジノン環を有するフェニルピリミジン誘
導体は、他の液晶化合物との相溶性に優れ、キラルドー
パントとして少量添加するだけで、大きい自発分極を誘
起することができ、広い温度範囲で高速応答が可能で、
且つ配向性の優れた液晶組成物を得られる。
INDUSTRIAL APPLICABILITY The phenylpyrimidine derivative having an optically active oxazolidinone ring represented by the general formula (I) of the present invention has excellent compatibility with other liquid crystal compounds, and it is possible to obtain a large spontaneous polarization by adding a small amount as a chiral dopant. Can be induced, and high-speed response is possible in a wide temperature range.
A liquid crystal composition having excellent alignment can be obtained.

【0110】また、本発明の一般式(I)の化合物は、
工業的に容易に製造でき、無色で水、光等に対する化学
的安定性にも優れているので非常に実用的である。更
に、本発明のキラルスメクチック液晶組成物では50μ
秒以下の高速応答を実現することも可能であり、表示用
光スイッチング素子として極めて有用である。
Further, the compound of the general formula (I) of the present invention is
It is very practical because it can be easily produced industrially, is colorless, and has excellent chemical stability against water and light. Further, in the chiral smectic liquid crystal composition of the present invention,
It is also possible to realize a high-speed response of less than a second, and it is extremely useful as an optical switching element for display.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 檜山 爲次郎 神奈川県相模原市上鶴間4−29−3−101 (72)発明者 楠本 哲生 神奈川県相模原市南台1−9−2−102 (72)発明者 佐藤 健一 神奈川県相模原市上溝35−11 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hijiro Hiujiro 4-29-3-101 Kamizuruma, Sagamihara City, Kanagawa Prefecture (72) Inventor Tetsuo Kusumoto 1-9-2-102, Minamidai, Sagamihara City, Kanagawa Prefecture (72) Inventor Kenichi Sato 35-11 Kamimizo, Sagamihara City, Kanagawa Prefecture

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 一般式(I) 【化1】 (式中、R1はフッ素原子又は炭素原子数1〜10のア
ルコキシル基により置換されていてもよい炭素原子数1
〜18のアルキル基を表わし、Xは単結合又は−O−を
表わし、mは0又は1を表わし、環Aはフッ素原子によ
り置換されていてもよい1,4−フェニレン基又はトラ
ンス−1,4−シクロヘキシレン基を表わし、R2は炭
素原子数1〜10のアルキル基を表わし、オキサゾリジ
ノン環の5位の不斉炭素原子は(R)又は(S)配置で
ある。)で表わされる光学活性化合物。
1. A compound represented by the general formula (I): (In the formula, R 1 has 1 carbon atom which may be substituted with a fluorine atom or an alkoxyl group having 1 to 10 carbon atoms.
To 18 alkyl groups, X represents a single bond or -O-, m represents 0 or 1, and ring A is a 1,4-phenylene group optionally substituted by a fluorine atom or trans-1, It represents a 4-cyclohexylene group, R 2 represents an alkyl group having 1 to 10 carbon atoms, and the asymmetric carbon atom at the 5-position of the oxazolidinone ring has the (R) or (S) configuration. ) An optically active compound represented by:
【請求項2】 m=0である請求項1記載の光学活性化
合物。
2. The optically active compound according to claim 1, wherein m = 0.
【請求項3】 請求項1記載の一般式(I)で表わされ
る光学活性化合物を含有する液晶組成物。
3. A liquid crystal composition containing the optically active compound represented by formula (I) according to claim 1.
【請求項4】 強誘電性キラルスメクチック相を示す請
求項3記載の液晶組成物。
4. The liquid crystal composition according to claim 3, which exhibits a ferroelectric chiral smectic phase.
JP4338714A 1992-12-18 1992-12-18 Phenylpyrimidine derivative having optically active oxazolidinone ring and liquid crystal composition Pending JPH06184142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4338714A JPH06184142A (en) 1992-12-18 1992-12-18 Phenylpyrimidine derivative having optically active oxazolidinone ring and liquid crystal composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4338714A JPH06184142A (en) 1992-12-18 1992-12-18 Phenylpyrimidine derivative having optically active oxazolidinone ring and liquid crystal composition

Publications (1)

Publication Number Publication Date
JPH06184142A true JPH06184142A (en) 1994-07-05

Family

ID=18320772

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPH06184142A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333492B1 (en) * 1999-05-27 2002-04-25 박호군 Isoxazolylmethylene oxazolidinone derivatives and preparation thereof
KR100333493B1 (en) * 1999-05-27 2002-04-25 박호군 Isoxazolylcarbonyl oxaxolidinone derivatives and preparation thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333492B1 (en) * 1999-05-27 2002-04-25 박호군 Isoxazolylmethylene oxazolidinone derivatives and preparation thereof
KR100333493B1 (en) * 1999-05-27 2002-04-25 박호군 Isoxazolylcarbonyl oxaxolidinone derivatives and preparation thereof

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