JP4107621B2 - Hydroxystilbene compounds and their intermediates - Google Patents

Hydroxystilbene compounds and their intermediates Download PDF

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Publication number
JP4107621B2
JP4107621B2 JP16084598A JP16084598A JP4107621B2 JP 4107621 B2 JP4107621 B2 JP 4107621B2 JP 16084598 A JP16084598 A JP 16084598A JP 16084598 A JP16084598 A JP 16084598A JP 4107621 B2 JP4107621 B2 JP 4107621B2
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compound
hydroxystilbene
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formula
examples
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JPH1160544A (en
Inventor
千秋 田中
正臣 佐々木
一清 永井
慎一 河村
進 鈴鹿
勝宏 諸岡
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Ricoh Co Ltd
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Ricoh Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は電子写真用の有機光導電性材料として、またヒドロキシル基から誘導される種々の材料の製造中間体としても有用なヒドロキシスチルベン化合物、およびその製造中間体として有用なアミノスチルベン化合物に関する。
【0002】
【従来の技術】
従来、電子写真方式において使用される感光体の光導電性素材として用いられているものにセレン、硫化カドミウム、酸化亜鉛などの無機物質がある。ここにいう「電子写真方式」とは、一般に、光導電性の感光体をまず暗所で、例えばコロナ放電によって帯電せしめ、次いで像露光し、露光部のみの電荷を選択的に逸散せしめて静電潜像を得、この潜像部を染料、顔料などの着色材と高分子物質などの結着剤とから構成される検電微粒子(トナー)で現像し可視化して画像を形成するようにした画像形成法の一つである。このような電子写真法において感光体に要求される基本的な特性としては、
(1)暗所で適当な電位に帯電できること
(2)暗所において電荷の逸散が少ないこと
(3)光照射によって速やかに電荷を逸散せしめうること
などが挙げられる。
【0003】
また近年、感光体の更なる機械的強度の向上を目的とした高分子光導電性材料(米国特許第4,801,517号、米国特許第4,806,443号、米国特許第4,806,444号、特開平3−221522号、特開平4−11627号)が提案されている。しかしながら、従来の低分子あるいは高分子光導電性材料は、これらの要求を十分に満足するものが得られていないのが実状である。
【0004】
【発明が解決しようとする課題】
本発明の目的は、従来の感光体がもつ種々の欠点を解消し、基本的な電子写真特性を全て満足する高分子光導電性材料の製造中間体として有用なヒドロキシスチルベン化合物とアミノスチルベン化合物を提供することにある。
【0005】
【課題を解決するための手段】
上記課題を解決するための本発明の構成は、特許請求の範囲に記載のとおりの一般式(I−3)で表されるヒドロキシスチルベン化合物である。
下記にその関連化合物一般式(I)、(I−1)、(I−2)、(II)、(II−1)、(II−2)、および(II−3)とともに示す。
【0006】
【化9】

Figure 0004107621
【0007】
【化10】
Figure 0004107621
【0008】
【化11】
Figure 0004107621
【0009】
【化12】
Figure 0004107621
【0010】
【化13】
Figure 0004107621
【0011】
【化14】
Figure 0004107621
【0012】
【化15】
Figure 0004107621
【0013】
【化16】
Figure 0004107621
【0014】
(式(I)(I−1)(I−2)(I−3)(II)(II−1)(II−2)および(II−3)中、R1、R2、R3、R4は水素原子を表し、R5、R6は置換もしくは無置換のアルキル基、置換もしくは無置換のアシル基を表し、それぞれ同一でも異なっていてもよい。Ar1、Ar2、Ar3、Ar4、Ar6、Ar7はフェニレン基を表し、Ar5、Ar8はフェニル基を表し、Xは−O−、−S−、−CH 2 CH 2 を表す。)
本発明における、前記一般式で示されるスチルベン化合物はいずれも新規物質であり、前記一般式(I)で示されるヒドロキシスチルベン化合物は、前記一般式(II)で示される化合物の脱アルキル化もしくは脱アシル化によって得られる。詳しくは、脱アルキル化の場合、酸性試薬による開裂反応、塩基性試薬による開裂反応が挙げられ、酸性試薬としては臭化水素、ヨウ化水素、トリフルオロ酢酸、ピリジンの塩酸塩、濃塩酸、ヨウ化マグネシウムエーテラート、塩化アルミニウム、臭化アルミニウム、三臭化ホウ素、三塩化ホウ素、三ヨウ化ホウ素等が、塩基性試薬としては水酸化カリウム、リチウムジフェニルホスフィド、ナトリウムチオラート等を挙げることができる。溶媒としてはジクロロメタン、THF、DMF、ピリジン、ブタノール等を挙げることができ、反応温度は用いる試薬の反応性によるが、一般的には室温〜200℃の間で行われる。
【0015】
また、脱アシル化の場合は、酸性またはアルカリ性下で脱アシル化することによって製造される。この時の酸性および塩基性試薬として例えば、塩酸、硫酸、水酸化ナトリウム、水酸化カリウム等を挙げることができ、反応溶媒としてはメタノール、エタノール、イソプロパノール、ブタノール、2−メトキシエタノール、1,2−ジメトキシエタン、ビス(2−メトキシエチル)エーテル、ジオキサン、テトラヒドロフラン、ベンゼン、トルエン、キシレン、ジメチルスルホキシド、N,N−ジメチルホルムアミド、N−メチルピロリドン、1,3−ジメチル−2−イミダゾリジノンなどを挙げることができる。
【0016】
更に、前記一般式(II)〜(II−3)で示される化合物は、下記一般式(III) で表されるアルデヒド化合物
【0017】
【化17】
Figure 0004107621
【0018】
(式中、Ar3、Ar4、Ar6、Ar7はフェニレン基を表し、Ar5、Ar8はフェニル基を表し、Xは単結合、−O−、−S−、−CH 2 CH 2 を表す。)
で表されるアルデヒド化合物と下記一般式(IV−1、IV−2)
【0019】
【化18】
Figure 0004107621
【0020】
(式中、R1、R2は水素原子を表し、R5、R6は置換もしくは無置換のアルキル基、置換もしくは無置換のアシル基を表し、それぞれ同一でも異なっていてもよい。Ar1、Ar2はフェニレン基を表し、Yは−P + (R 7 3 - (ここでR7はフェニル基または低級アルキル基、Zはハロゲン原子を表す。)で表されるホスホニウム塩、または−PO(OR8)2(ここでR8は低級アルキル基を表す。)で表されるジアルキル亜燐酸基である。)
で表されるリン化合物とを塩基性触媒の存在下、室温から100℃程度の温度において反応させることによって製造される。この場合、塩基性触媒としては、フェニルリチウム、水酸化ナトリウム、水酸化カリウム、ナトリウムアミド、水素化ナトリウム及びナトリウムメチラート、カリウム−t−ブトキサイドなどのアルコラートを挙げることができる。また反応溶媒としては、メタノール、エタノール、イソプロパノール、ブタノール、2−メトキシエタノール、1,2−ジメトキシエタン、ビス(2−メトキシエチル)エーテル、ジオキサン、テトラヒドロフラン、ベンゼン、トルエン、キシレン、ジメチルスルホキシド、N,N−ジメチルホルムアミド、N−メチルピロリドン、1,3−ジメチル−2−イミダゾリジノンなどを挙げることができる。中でも極性溶媒、例えば、N,N−ジメチルホルムアミドおよびメチルスルホキシドが好適である。反応温度は、
(1)使用する溶媒の塩基性触媒に対する安定性
(2)縮合成分(前記一般式(III)および一般式(IV−1)、(IV−2)の化合物)の反応性
(3)前記塩基性触媒の溶媒中における縮合剤としての反応性
によって広範囲に選択することができる。例えば極性溶媒を用いるときは、実際には室温から100℃、好ましくは室温から80℃である。しかし、反応時間の短縮又は活性の低い縮合剤を使用するときは更に高い温度でもよい。
【0021】
このようにして得られる本発明の前記一般式(I)、(I−1)、(I−2)、(I−3)、(II)、(II−1)、(II−2)(II−3)で表されるヒドロキシスチルベン化合物とアミノスチルベン化合物の好ましい例を以下の表1に例示する。
【0022】
【表1】
Figure 0004107621
【0023】
【表2】
Figure 0004107621
【0024】
【表3】
Figure 0004107621
【0025】
【表4】
Figure 0004107621
【0026】
【表5】
Figure 0004107621
【0027】
【表6】
Figure 0004107621
【0028】
【表7】
Figure 0004107621
【0029】
【表8】
Figure 0004107621
【0030】
【表9】
Figure 0004107621
【0031】
【表10】
Figure 0004107621
【0032】
【表11】
Figure 0004107621
【0033】
【表12】
Figure 0004107621
【0034】
【表13】
Figure 0004107621
【0035】
【表14】
Figure 0004107621
【0036】
【表15】
Figure 0004107621
【0037】
【表16】
Figure 0004107621
【0038】
本発明のヒドロキシスチルベン化合物とアミノスチルベン化合物は、電子写真用感光体における光導電性素材として極めて有用であり、染料やルイス酸などの増感剤によって光学的あるいは化学的に増感される。また有機顔料あるいは無機顔料を電荷発生物質とするいわゆる機能力離型感光体における電荷移動物質としてとりわけ有用である。
【0039】
上記増感剤として例えばメチルバイオレット、クリスタルバイオレット等のトリアリルメタン染料、ローズベンガル、エリスロシン、ローダミンB等のキサンテン染料、メチルレンブルー等のチアジン染料、2,4,7−トリニトロ−9−フルオレノン、2,4−ジニトロ−9−フルオレノンが挙げられる。
【0040】
また有機顔料としては、シーアイピグメントブルー25(C.I.No.21180)、シーアイピグメントレッド41(C.I.No.21200)、シーアイベーシックレッド3(C.I.No.45210)等のアゾ系顔料、シーアイピグメントブルー16(C.I.No.74100)等のフタロシアニン系顔料、シーアイバットブラウン5(C.I.No.73410)、シーアイバットダイ(C.I.No.73030)等のインジゴ系顔料、アルゴスカーレットB、インダンスレンスカーレットR等のペリレン系顔料が挙げられる。また、セレン、セレン−テルル、硫化カドミウム、α−シリコン等の無機顔料も使用できる。
【0041】
また、ヒドロキシル基から誘導される種々の材料の製造、例えばポリカーボネート樹脂、ポリエステル樹脂、ポリウレタン樹脂、エポキシ樹脂等の製造中間体としても有用である。
【0042】
【発明の実施の態様】
以下、本発明を実施例により詳細に説明する。しかし、本発明はこれら実施例に限定されるものではない。
【0043】
実施例1
例示化合物No.24の合成
下記式(1)
【0044】
【化19】
Figure 0004107621
【0045】
で表されるアルデヒド化合物14.32g(25.0mmol)と4−メトキシベンジルホスホン酸ジエチル15.49g(60.0mmol)をDMF100mlに採り、撹拌しながらカリウム−t−ブトキサイド6.73g(60.0mmol)を10分かけて投入し、室温で3時間反応させた。この内容物を氷水400mlに注ぎ、酢酸を加えて中和し、生成した沈澱物を瀘取、水洗、メタノール洗浄の順に操作し、乾燥後シリカゲルカラムクロマト処理(溶離液;トルエン/シクロヘキサン 3/2vol.)を行い、例示化合物No.24の淡黄色結晶17.99g(収率92.2%)を得た。
【0046】
融点は215.5−218.5℃、元素分析値はC564822として下記のとおりであった。
【0047】
Figure 0004107621
また、赤外線吸収スペクトル(KBr錠剤法)を図1に示す。
【0048】
実施例2〜4
実施例1における式(1)のアルデヒド化合物と4−メトキシベンジルホスホン酸ジエチルの代わりに下記表2に示す原料を用いるほかは、実施例1と同様に操作して本発明のアミノスチルベン化合物を得た。
【0049】
【表17】
Figure 0004107621
【0050】
実施例5
例示化合物No.1の合成
上記実施例1で得られた下記式(2)
【0051】
【化20】
Figure 0004107621
【0052】
で表されるアミノスチルベン化合物15.62g(20.0mmol)と90%ナトリウムチオエチラート10g(107mmol)をモレキュラーシーブ乾燥したN,N−ジメチルホルムアミド100mlに加え、窒素気流下、130〜135℃で3時間撹拌した。この反応液を60℃まで空冷した後、氷水300mlに注ぎ、濃塩酸を加えて酸性とし、室温で1時間撹拌した。析出した結晶を瀘取、水洗、メタノール洗浄し、乾燥後シリカゲルカラムクロマト処理(溶離液;トルエン/酢酸エチル 10/1vol.)を行い、例示化合物No.1の黄色結晶12.04g(収率79.9%)を得た。
【0053】
融点は213.5−218.0℃、元素分析値はC544422として下記のとおりであった。
【0054】
Figure 0004107621
また、赤外線吸収スペクトル(KBr錠剤法)を図4に示す。
【0055】
実施例6〜7
実施例5における式(2)のアミノスチルベン化合物のかわりに、下記表3に示す原料を用いるほかは、実施例5と同様に操作して本発明のヒドロキシスチルベン化合物を得た。
【0056】
【表18】
Figure 0004107621
【0057】
応用例1
ポリマー原料としての応用例
上記実施例4で得られた下記式(3)
【0058】
【化21】
Figure 0004107621
【0059】
で表されるヒドロキシスチルベン化合物1.355g(1.80mmol)とビスフェノールA1.065g(4.67mmol)、t−ブチルフェノール0.020gを反応容器に入れ、アルゴンガス気流下、ハイドロサルファイト0.071gと水酸化ナトリウム1.035gを溶解させたイオン交換水50mlを加え撹拌した。これを3℃でトリホスゲン1.152gを溶解させたジクロロメタン35mlを滴下した後、15分かけて室温へもどし、10%水酸化ナトリウム1.5ml、トリエチルアミン2滴の順に加え、2時間反応させた。反応液にt−ブチルフェノール0.010gを加えて、さらに2時間撹拌した。得られた反応液をメタノール中に再沈澱させて下記式(4)
【0060】
【化22】
Figure 0004107621
【0061】
で表されるポリカーボネート樹脂2.49g(収率96.1%)を得た。
【0062】
得られたポリカーボネート樹脂の分子量をゲルパーミエーションクロマトグラフィーにより測定したところ、ポリスチレン換算の分子量は以下のとおりであった。
【0063】
数平均分子量 28400
重量平均分子量 127400
また、元素分析値はC26.8421.780.563として下記のとおりであった。
【0064】
Figure 0004107621
【0065】
【発明の効果】
以上説明したように、本発明によれば、電子写真用感光体における光導電性素材として有用であり、また、ポリカーボネート樹脂などの製造用中間体としても有用なヒドロキシスチルベン化合物が提供され、また該ヒドロキシスチルベン化合物の中間体として有用なアミノスチルベン化合物が提供される。
【図面の簡単な説明】
【図1】実施例1で得られた化合物のIRスペクトル、
【図2】実施例2で得られた化合物のIRスペクトル、
【図3】実施例3で得られた化合物のIRスペクトル、
【図4】実施例4で得られた化合物のIRスペクトル、
【図5】実施例5で得られた化合物のIRスペクトル、
【図6】実施例6で得られた化合物のIRスペクトル、
【図7】実施例7で得られた化合物のIRスペクトル。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydroxystilbene compound useful as an organic photoconductive material for electrophotography and as an intermediate for producing various materials derived from hydroxyl groups, and an aminostilbene compound useful as an intermediate for the production.
[0002]
[Prior art]
Conventionally, inorganic materials such as selenium, cadmium sulfide, and zinc oxide are used as photoconductive materials for photoreceptors used in electrophotography. The "electrophotographic system" here generally means that a photoconductive photosensitive member is first charged in a dark place, for example, by corona discharge, and then image-exposed to selectively dissipate the charge of only the exposed portion. An electrostatic latent image is obtained, and the latent image portion is developed and visualized with electrophotographic fine particles (toner) composed of a coloring material such as a dye or a pigment and a binder such as a polymer substance to form an image. This is one of the image forming methods. As basic characteristics required for a photoreceptor in such an electrophotographic method,
(1) It can be charged to an appropriate potential in a dark place. (2) There is little dissipation of charge in the dark place. (3) The charge can be quickly dissipated by light irradiation.
[0003]
In recent years, polymeric photoconductive materials (US Pat. No. 4,801,517, US Pat. No. 4,806,443, US Pat. No. 4,806) aimed at further improving the mechanical strength of photoreceptors have been developed. 444, JP-A-3-221522, and JP-A-4-11627). However, the conventional low molecular weight or high molecular weight photoconductive materials are not actually able to satisfy these requirements.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a hydroxystilbene compound and an aminostilbene compound that are useful as intermediates for the production of a polymer photoconductive material that eliminates various drawbacks of conventional photoreceptors and satisfies all basic electrophotographic characteristics. It is to provide.
[0005]
[Means for Solving the Problems]
Configuration of the present invention to solve the above problems, Ru hydroxystilbene compound der represented by formula (I-3) of the as described in the appended claims.
The related compounds are shown below together with general formulas (I), (I-1), (I-2), (II), (II-1), (II-2), and (II-3).
[0006]
[Chemical 9]
Figure 0004107621
[0007]
[Chemical Formula 10]
Figure 0004107621
[0008]
Embedded image
Figure 0004107621
[0009]
Embedded image
Figure 0004107621
[0010]
Embedded image
Figure 0004107621
[0011]
Embedded image
Figure 0004107621
[0012]
Embedded image
Figure 0004107621
[0013]
Embedded image
Figure 0004107621
[0014]
(In the formulas (I-1) (I-1) (I-2) (I-3) (II) (II-1) (II-2) and (II-3), R1, R2, R3 and R4 are hydrogen. represents atomic, R 5, R6 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted acyl group, each of which may be the same or different .Ar1, Ar2, Ar3, Ar4, Ar6, Ar7 phenylene represents a group, Ar5, Ar8 represents a phenyl group, X is -O -, - S-, -CH 2 CH 2 - represents a).
In the present invention, any of the stilbene compounds represented by the general formula is a novel substance, and the hydroxystilbene compound represented by the general formula (I) is dealkylated or dealkylated of the compound represented by the general formula (II). Obtained by acylation. Specifically, in the case of dealkylation, a cleavage reaction with an acidic reagent and a cleavage reaction with a basic reagent can be mentioned. Examples of the acidic reagent include hydrogen bromide, hydrogen iodide, trifluoroacetic acid, pyridine hydrochloride, concentrated hydrochloric acid, iodine Magnesium iodide etherate, aluminum chloride, aluminum bromide, boron tribromide, boron trichloride, boron triiodide and the like, and basic reagents include potassium hydroxide, lithium diphenyl phosphide, sodium thiolate and the like . Examples of the solvent include dichloromethane, THF, DMF, pyridine, butanol and the like. The reaction temperature depends on the reactivity of the reagent used, but is generally performed between room temperature and 200 ° C.
[0015]
In the case of deacylation, it is produced by deacylation under acidic or alkaline conditions. Examples of acidic and basic reagents at this time include hydrochloric acid, sulfuric acid, sodium hydroxide, potassium hydroxide and the like. Examples of the reaction solvent include methanol, ethanol, isopropanol, butanol, 2-methoxyethanol, 1,2- Dimethoxyethane, bis (2-methoxyethyl) ether, dioxane, tetrahydrofuran, benzene, toluene, xylene, dimethyl sulfoxide, N, N-dimethylformamide, N-methylpyrrolidone, 1,3-dimethyl-2-imidazolidinone, etc. Can be mentioned.
[0016]
Furthermore, the compounds represented by the general formulas (II) to (II-3) are aldehyde compounds represented by the following general formula (III):
Embedded image
Figure 0004107621
[0018]
(In the formula, Ar 3, Ar 4, Ar 6 and Ar 7 represent a phenylene group, Ar 5 and Ar 8 represent a phenyl group, and X represents a single bond, —O—, —S—, —CH 2 CH 2 ).
And the following general formulas (IV-1, IV-2)
[0019]
Embedded image
Figure 0004107621
[0020]
(Wherein, R1, R2 represents a hydrogen atom, R5, R6 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted acyl group, each of which may be the same or different .Ar1, Ar @ 2 is phenylene represents a group, Y is -P + (R 7) 3 Z - (. wherein R7 is a phenyl group or a lower alkyl group, Z is representative of a halogen atom) phosphonium salt represented by or -PO (OR8) 2, (Wherein R8 represents a lower alkyl group).
In the presence of a basic catalyst at a temperature of from about room temperature to about 100 ° C. In this case, examples of the basic catalyst may include alcoholates such as phenyl lithium, sodium hydroxide, potassium hydroxide, sodium amide, sodium hydride and sodium methylate, and potassium t-butoxide. As the reaction solvent, methanol, ethanol, isopropanol, butanol, 2-methoxyethanol, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether, dioxane, tetrahydrofuran, benzene, toluene, xylene, dimethyl sulfoxide, N, N-dimethylformamide, N-methylpyrrolidone, 1,3-dimethyl-2-imidazolidinone and the like can be mentioned. Of these, polar solvents such as N, N-dimethylformamide and methyl sulfoxide are preferred. The reaction temperature is
(1) Stability of solvent to be used with respect to basic catalyst (2) Reactivity of condensation component (compounds of general formula (III) and general formulas (IV-1) and (IV-2)) (3) base Depending on the reactivity as a condensing agent in the solvent of the conductive catalyst, a wide range can be selected. For example, when a polar solvent is used, it is actually from room temperature to 100 ° C., preferably from room temperature to 80 ° C. However, higher temperatures may be used when shortening the reaction time or using a less active condensing agent.
[0021]
Thus obtained general formulas (I), (I-1), (I-2), (I-3), (II), (II-1), (II-2) ( Preferred examples of the hydroxystilbene compound and aminostilbene compound represented by II-3) are illustrated in Table 1 below.
[0022]
[Table 1]
Figure 0004107621
[0023]
[Table 2]
Figure 0004107621
[0024]
[Table 3]
Figure 0004107621
[0025]
[Table 4]
Figure 0004107621
[0026]
[Table 5]
Figure 0004107621
[0027]
[Table 6]
Figure 0004107621
[0028]
[Table 7]
Figure 0004107621
[0029]
[Table 8]
Figure 0004107621
[0030]
[Table 9]
Figure 0004107621
[0031]
[Table 10]
Figure 0004107621
[0032]
[Table 11]
Figure 0004107621
[0033]
[Table 12]
Figure 0004107621
[0034]
[Table 13]
Figure 0004107621
[0035]
[Table 14]
Figure 0004107621
[0036]
[Table 15]
Figure 0004107621
[0037]
[Table 16]
Figure 0004107621
[0038]
The hydroxystilbene compound and aminostilbene compound of the present invention are extremely useful as a photoconductive material in an electrophotographic photoreceptor, and are optically or chemically sensitized by a sensitizer such as a dye or a Lewis acid. Further, it is particularly useful as a charge transfer material in a so-called functional force release type photoreceptor using an organic pigment or an inorganic pigment as a charge generation material.
[0039]
Examples of the sensitizer include triallylmethane dyes such as methyl violet and crystal violet, xanthene dyes such as rose bengal, erythrosine and rhodamine B, thiazine dyes such as methyllene blue, 2,4,7-trinitro-9-fluorenone, 2,4-dinitro-9-fluorenone is mentioned.
[0040]
Examples of organic pigments include azo pigments such as C.I. Pigment Blue 25 (C.I.No. 21180), C.I. Pigment Red 41 (C.I.No. 21200), and C.I. Basic Red 3 (C.I.No. 45210). Pigments, phthalocyanine pigments such as C.I. Pigment Blue 16 (C.I.No. 74100), C.I.But Brown 5 (C.I.No. 73410), C.I. Indigo pigments, perylene pigments such as Argo scarlet B, Indance scarlet R, and the like. In addition, inorganic pigments such as selenium, selenium-tellurium, cadmium sulfide, and α-silicon can also be used.
[0041]
It is also useful as a production intermediate for various materials derived from hydroxyl groups, for example, polycarbonate resin, polyester resin, polyurethane resin, epoxy resin and the like.
[0042]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to examples. However, the present invention is not limited to these examples.
[0043]
Example 1
Exemplified Compound No. Synthesis of 24 The following formula (1)
[0044]
Embedded image
Figure 0004107621
[0045]
14.32 g (25.0 mmol) of the aldehyde compound represented by formula (1) and 15.49 g (60.0 mmol) of diethyl 4-methoxybenzylphosphonate were taken up in 100 ml of DMF, and 6.73 g (60.0 mmol) of potassium tert-butoxide was stirred with stirring. ) Was added over 10 minutes and reacted at room temperature for 3 hours. The contents are poured into 400 ml of ice water, neutralized by adding acetic acid, and the resulting precipitate is filtered, washed with water and washed with methanol in that order, dried and then subjected to silica gel column chromatography (eluent: toluene / cyclohexane 3/2 vol). ), And Exemplified Compound No. 24.99 g (yield 92.2%) of 24 pale yellow crystals were obtained.
[0046]
The melting point was 215.5-218.5 ° C., and the elemental analysis value was as follows as C 56 H 48 N 2 O 2 .
[0047]
Figure 0004107621
Infrared absorption spectrum (KBr tablet method) is shown in FIG.
[0048]
Examples 2-4
The aminostilbene compound of the present invention is obtained in the same manner as in Example 1 except that the raw materials shown in Table 2 below are used in place of the aldehyde compound of formula (1) and diethyl 4-methoxybenzylphosphonate in Example 1. It was.
[0049]
[Table 17]
Figure 0004107621
[0050]
Example 5
Exemplified Compound No. Synthesis of 1 The following formula (2) obtained in Example 1 above
[0051]
Embedded image
Figure 0004107621
[0052]
15.62 g (20.0 mmol) of an aminostilbene compound represented by formula (10) and 10 g (107 mmol) of 90% sodium thioethylate are added to 100 ml of molecular sieve-dried N, N-dimethylformamide at 130 to 135 ° C. under a nitrogen stream. Stir for 3 hours. The reaction solution was air-cooled to 60 ° C., poured into 300 ml of ice water, acidified with concentrated hydrochloric acid, and stirred at room temperature for 1 hour. The precipitated crystals were collected, washed with water, washed with methanol, dried and then subjected to silica gel column chromatography (eluent: toluene / ethyl acetate 10/1 vol.). As a result, 12.04 g (yield 79.9%) of 1 yellow crystal was obtained.
[0053]
The melting point was 213.5-218.0 ° C., and the elemental analysis value was as follows as C 54 H 44 N 2 O 2 .
[0054]
Figure 0004107621
Infrared absorption spectrum (KBr tablet method) is shown in FIG.
[0055]
Examples 6-7
A hydroxystilbene compound of the present invention was obtained in the same manner as in Example 5 except that the raw materials shown in Table 3 below were used instead of the aminostilbene compound of the formula (2) in Example 5.
[0056]
[Table 18]
Figure 0004107621
[0057]
Application example 1
Application Example as Polymer Raw Material The following formula (3) obtained in Example 4 above
[0058]
Embedded image
Figure 0004107621
[0059]
1.355 g (1.80 mmol) of a hydroxystilbene compound represented by the formula: 1.065 g (4.67 mmol) of bisphenol A and 0.020 g of t-butylphenol were placed in a reaction vessel, and 0.071 g of hydrosulfite was added under an argon gas stream. 50 ml of ion-exchanged water in which 1.035 g of sodium hydroxide was dissolved was added and stirred. After dropwise addition of 35 ml of dichloromethane in which 1.152 g of triphosgene was dissolved at 3 ° C., the mixture was returned to room temperature over 15 minutes, added with 1.5 ml of 10% sodium hydroxide and 2 drops of triethylamine in this order, and allowed to react for 2 hours. T-Butylphenol 0.010g was added to the reaction liquid, and also it stirred for 2 hours. The resulting reaction solution was reprecipitated in methanol to obtain the following formula (4)
[0060]
Embedded image
Figure 0004107621
[0061]
2.49 g (96.1% yield) of a polycarbonate resin represented by
[0062]
When the molecular weight of the obtained polycarbonate resin was measured by gel permeation chromatography, the molecular weight in terms of polystyrene was as follows.
[0063]
Number average molecular weight 28400
Weight average molecular weight 127400
The elemental analysis values were as follows as C 26.84 H 21.78 N 0.56 O 3 .
[0064]
Figure 0004107621
[0065]
【The invention's effect】
As described above, according to the present invention, there is provided a hydroxystilbene compound that is useful as a photoconductive material in an electrophotographic photoreceptor and also useful as an intermediate for production of polycarbonate resin and the like. Aminostilbene compounds useful as intermediates for hydroxystilbene compounds are provided.
[Brief description of the drawings]
1 is an IR spectrum of the compound obtained in Example 1, FIG.
FIG. 2 is an IR spectrum of the compound obtained in Example 2.
FIG. 3 shows the IR spectrum of the compound obtained in Example 3.
4 is an IR spectrum of the compound obtained in Example 4, FIG.
FIG. 5 is an IR spectrum of the compound obtained in Example 5,
FIG. 6 is an IR spectrum of the compound obtained in Example 6.
7 is an IR spectrum of the compound obtained in Example 7. FIG.

Claims (1)

下記一般式(I−3)で表されるヒドロキシスチルベン化合物。
Figure 0004107621
(式中、R1、R2、R3、R4は水素原子を表し、Xは−O−、−S−、−CH 2 CH 2 を表す。)
A hydroxystilbene compound represented by the following general formula (I-3).
Figure 0004107621
(Wherein, R1, R2, R3, R4 represents hydrogen atom, X is -O -, - S-, -CH 2 CH 2 - represents a.)
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