JP5013365B2 - Method for synthesizing spacer-introduced bis (terpyridine) compounds - Google Patents

Method for synthesizing spacer-introduced bis (terpyridine) compounds Download PDF

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JP5013365B2
JP5013365B2 JP2006356186A JP2006356186A JP5013365B2 JP 5013365 B2 JP5013365 B2 JP 5013365B2 JP 2006356186 A JP2006356186 A JP 2006356186A JP 2006356186 A JP2006356186 A JP 2006356186A JP 5013365 B2 JP5013365 B2 JP 5013365B2
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terpyridine
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spacer
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JP2008162976A (en
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福社 韓
昌芳 樋口
ディルク クルス
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National Institute for Materials Science
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本発明は、金属イオンとの錯形成によるハイブリッドポリマーがエレクトロクロミック材料として期待されているビス(ターピリジル)ベンゼン誘導体をはじめとする各種のスペーサー導入型ビス(ターピリジン)化合物の合成方法に関するものである。   The present invention relates to a method for synthesizing various spacer-introduced bis (terpyridine) compounds including bis (terpyridyl) benzene derivatives for which hybrid polymers by complex formation with metal ions are expected as electrochromic materials.

従来より、ビス(ターピリジル)ベンゼン誘導体は金属イオンと錯形成してハイブリッドポリマーとなり、このものは優れたエレクトロクロミック特性を示すことが知られている。このため、このハイブリッドポリマーは、電子ペーパー等の表示材料として将来の技術展開が期待されている。そして、表示デバイスへの応用のためには、エレクトロクロミックのマルチカラー化が望まれ、そのための検討も進められている。   Conventionally, bis (terpyridyl) benzene derivatives are complexed with metal ions to form hybrid polymers, which are known to exhibit excellent electrochromic properties. For this reason, this hybrid polymer is expected to develop in the future as a display material such as electronic paper. For application to display devices, electrochromic multi-coloring is desired, and studies for that purpose are underway.

しかしながら、ビス(ターピリジル)ベンゼン誘導体をはじめとするビス(ターピリジン)化合物についての従来の知見(非特許文献1−2)によれば、その合成方法は極めて限られた構造と官能基の導入しか可能でなく、また、非対称型の分子構造を持つものとすることが困難であった。   However, according to conventional knowledge about bis (terpyridine) compounds including bis (terpyridyl) benzene derivatives (Non-Patent Document 1-2), the synthesis method can introduce only a very limited structure and functional group. In addition, it was difficult to have an asymmetric molecular structure.

このため、マルチカラー化を可能とするための分子構造と官能基の設計とその合成の自由度に乏しく、技術的応用展開のための大きな障害となっていた。
Eur. J. Inorg. Chem., 2004, 1763−1769 J. Chem. Soc., Dalton Trans. 1992, 3467−3475
For this reason, the degree of freedom in designing and synthesizing the molecular structure and functional groups to enable multicolorization has been insufficient, which has been a major obstacle for technical application development.
Eur. J. et al. Inorg. Chem. , 2004, 1763-1769 J. et al. Chem. Soc. , Dalton Trans. 1992, 3467-3475

本発明は、上記のとおりの背景から、従来技術の問題点を解消し、ハイブリッドポリマーのマルチカラー化を可能ともするために、分子構造と官能基の設計とその合成が自由度が大きく、複雑な多段階反応を必要としない、スペーサー導入型ビス(ターピリジン)化合物の新しい合成方法を提供することを課題としている。   From the background described above, the present invention eliminates the problems of the prior art and enables the multi-coloring of the hybrid polymer, so that the design and synthesis of the molecular structure and functional groups are highly flexible and complicated. It is an object to provide a new method for synthesizing a spacer-introduced bis (terpyridine) compound that does not require a multistep reaction.

本発明のスペーサー導入型ビス(ターピリジン)化合物の合成方法は以下のことを特徴としている。
第1: 次式(1)
The method for synthesizing the spacer-introduced bis (terpyridine) compound of the present invention is characterized by the following.
1: The following formula (1)


表わされるターピリジン化合物を、次式(2)
In the represented by terpyridine compounds, the following formula (2)

表わされるホウ素化合物の存在下であって、パラジウム錯体化合物と塩基の共存下にカップリング反応させて、次式(3)
A presence of a represented by boron compounds in, by a coupling reaction in the presence of a palladium complex compound with a base, the following equation (3)


表わされる化合物を合成する方法であって、式(1)〜(3)中で、R 1 およびR 2 は、同一または別異に、各々、ハロゲン原子、炭化水素基、アルコキシ基、アミノ基、カルボニル基、カルボン酸エステル基、シアノ基、ニトロ基、または、これらを有する炭化水素基を示し、A 1 およびA 2 は、同一または別異であり、各々、炭化水素基を示し、Xはハロゲン原子を示し、R a とR b 、R c とR d は相互に結合していてもよく、R a 、R b 、R c 、R d は炭化水素基を示すことを特徴とする
In the formulas (1) to (3), R 1 and R 2 are the same or different and each represents a halogen atom, a hydrocarbon group, an alkoxy group, or an amino group. , A carbonyl group, a carboxylate group, a cyano group, a nitro group, or a hydrocarbon group having these, A 1 and A 2 are the same or different and each represents a hydrocarbon group, X is Represents a halogen atom, R a and R b , R c and R d may be bonded to each other, and R a , R b , R c and R d represent a hydrocarbon group .

第2:第1の発明において、式(1)の符号A1および式(2)の符号A2の炭化水素基は、芳香族基または複素環基であることを特徴とする。
第3:第1の発明において、式(1)、(2)中で、R 1 およびR 2 は、同一または別異に、各々、アルコキシ基、シアノ基またはこれらを有する炭化水素基を示すことを特徴とする。

Second: In the first invention, the hydrocarbon group of symbols A 2 symbols A 1 and equation (2) of formula (1) is characterized by an aromatic group or a heterocyclic group.
Third: In the first invention, in formulas (1) and (2), R 1 and R 2 are the same or different and each represents an alkoxy group, a cyano group, or a hydrocarbon group having these. It is characterized by.

上記のとおりの本発明の合成方法によれば、1種または2種のターピリジン化合物とスペーサー分子鎖が導入されたホウ素化合物を原料とすることでスペーサー導入型ビス(ターピリジン)化合物を合成することができる。しかもまた、本発明の方法によれば、ピリジン環には各種の官能置換基を導入したものとすることができる。これによって、ビス(ターピリジン)化合物の分子構造や、官能基の導入の選択幅は拡がって、設計そして合成の自由度は大きく向上する。ビス(ターピリジン)化合物からのハイブリッドポリマーのマルチカラー化へも大きく前進することになる。   According to the synthesis method of the present invention as described above, a spacer-introduced bis (terpyridine) compound can be synthesized by using as a raw material a boron compound into which one or two terpyridine compounds and a spacer molecular chain are introduced. it can. Moreover, according to the method of the present invention, various functional substituents can be introduced into the pyridine ring. As a result, the molecular structure of the bis (terpyridine) compound and the selection range of the introduction of the functional group are expanded, and the degree of freedom in design and synthesis is greatly improved. A major advance will also be made to multicolorization of hybrid polymers from bis (terpyridine) compounds.

しかも本発明の方法においては、複雑な多段階反応を必要とせず、良好な効率での合成反応が実現されることになる。   Moreover, in the method of the present invention, a complicated multistage reaction is not required, and a synthesis reaction with good efficiency is realized.

本発明の実施の形態について以下に説明する。   Embodiments of the present invention will be described below.

本発明では、反応の原料化合物であるターピリジン化合物は、一般的には前記の式(1)により表わすことができる。この式(1)において、ピリジン環は、許容される数の官能置換基を有していてもよく、またこれを有していなくてもよい。符号A1は、スペーサ
ー分子鎖としての炭化水素基を示している。
In the present invention, the terpyridine compound which is a raw material compound for the reaction can be generally represented by the above formula (1). In the formula (1), the pyridine ring may or may not have an allowable number of functional substituents. Symbol A 1 indicates a hydrocarbon group as a spacer molecular chain.

スペーサー分子鎖としての符号A1は、脂肪族、脂環族、芳香族、あるいは複素環の各
種の炭化水素基であってよく、たとえば、エレクトロクロミック材料としてのハイブリッ
ドポリマーの合成原料としては、このA1は、フェニル基、ビフェニル基、トリル基、ベ
ンジル基等の各種のアリール基や複素環基であることが好適に考慮される。
The symbol A 1 as the spacer molecular chain may be an aliphatic, alicyclic, aromatic or heterocyclic hydrocarbon group. For example, as a raw material for synthesizing a hybrid polymer as an electrochromic material, A 1 is suitably considered to be various aryl groups such as a phenyl group, a biphenyl group, a tolyl group, and a benzyl group, and a heterocyclic group.

符号Xのハロゲン原子としては、塩素原子、臭素原子またはヨウ素原子が例示される。   Examples of the halogen atom with the symbol X include a chlorine atom, a bromine atom and an iodine atom.

以上のような式(1)におけるターピリジン化合物におけるピリジン環に結合することのできる置換基としては、前記の式(4)のターピリジル基に示したように、符号R1
よびR2が、同一または別異であって、各々、たとえば、ハロゲン原子、脂肪族の炭素数
1〜16の範囲のアルキル基やアルケニル基、あるいはシクロアルキル基、フェニル基等のアリール基、ヒドロキシ(OH)基、炭素数1〜16の範囲脂肪族炭化水素基を有するアルコキシ基、アミノ(NH2)基、炭素数1〜16の範囲の脂肪族炭化水素基を有する
モノ−またはジ−置換アミノ基、アルデヒド(CHO)基または炭素数1〜16の範囲の脂肪族炭化水素基を有するケトン基あるいはカルボン酸エステル基、シアノ基、ニトロ基、さらには以上の置換基を結合する炭化水素基等の各種のものであってよい。これらの置換基は、式(4)において任意のピリジン環構成炭素原子に1または2以上結合していてもよい。
As the substituent that can be bonded to the pyridine ring in the terpyridine compound in the above formula (1), as shown in the terpyridyl group in the above formula (4), the symbols R 1 and R 2 are the same or Different, each having, for example, a halogen atom, an aliphatic alkyl group or alkenyl group having 1 to 16 carbon atoms, an aryl group such as a cycloalkyl group or a phenyl group, a hydroxy (OH) group, a carbon number Alkoxy groups having an aliphatic hydrocarbon group in the range of 1 to 16, amino (NH 2 ) group, mono- or di-substituted amino groups having an aliphatic hydrocarbon group in the range of 1 to 16 carbon atoms, aldehyde (CHO) A ketone group or a carboxylic acid ester group, a cyano group, a nitro group, or the above substituents having a group or an aliphatic hydrocarbon group having 1 to 16 carbon atoms. Various types of hydrocarbon groups may be used. One or more of these substituents may be bonded to any pyridine ring constituting carbon atom in the formula (4).

また、本発明において、スペーサー分子鎖導入のための原料化合物であるホウ素化合物は、一般的には前記の式(2)により表わすことができる。ここで、符号A2は前記A1と同様、スペーサー分子鎖としての炭化水素基を示し、脂肪族、脂環族、芳香族、あるいは複素環の各種の炭化水素基であってよく、たとえば、フェニル基、ビフェニル基、トリル基、ベンジル基等の各種のアリール基や複素環基であることが好適に考慮される。符号Ra、Rb、Rc、Rdは、各々、炭化水素基を示し、RaとRb、RcとRdは相互に結合して、ホウ素原子と共に環を形成していてもよい。 In the present invention, the boron compound which is a raw material compound for introducing the spacer molecular chain can be generally represented by the above formula (2). Here, the symbol A 2 represents a hydrocarbon group as a spacer molecular chain as in the case of the above A 1, and may be an aliphatic, alicyclic, aromatic, or heterocyclic hydrocarbon group. Various aryl groups such as phenyl group, biphenyl group, tolyl group, and benzyl group and heterocyclic groups are preferably considered. The symbols R a , R b , R c and R d each represent a hydrocarbon group, and R a and R b , R c and R d may be bonded to each other to form a ring with a boron atom. Good.

本発明の合成方法によれば、前記式(1)で表されるターピリジン化合物と前記式(2)で表されるホウ素化合物を原料として、式(3)で表わされるビス(ターピリジン)化合物が合成されることになる。このホウ素化合物については、原料のターピリジン化合物に対して、通常は、モル比で0.1〜1.2倍使用することが考慮される。   According to the synthesis method of the present invention, the bis (terpyridine) compound represented by the formula (3) is synthesized from the terpyridine compound represented by the formula (1) and the boron compound represented by the formula (2) as raw materials. Will be. About this boron compound, it is usually considered to be used in a molar ratio of 0.1 to 1.2 times with respect to the starting terpyridine compound.

また、カップリング反応では、このホウ素化合物と共に、パラジウム(Pd)の錯体化合物と塩基を用いることが有効である。パラジウム錯体化合物は、たとえばPdCl2
PPh32のような0価のPd錯体が好適なものとして考慮される。塩基については、たとえばLi、Na、K、Csのアルカリ金属の水酸化物、炭酸塩、炭酸水素塩、有機酸塩、フッ化物等が好ましいものとして例示される。より具体的には、KOH、NaOH、LiOH、K2CO3、NaHCO3、KHCO3、KOAc、KF等である。
In the coupling reaction, it is effective to use a palladium (Pd) complex compound and a base together with the boron compound. Examples of the palladium complex compound include PdCl 2 (
Zero-valent Pd complexes such as PPh 3 ) 2 are considered suitable. As the base, for example, alkali metal hydroxides of Li, Na, K, and Cs, carbonates, hydrogen carbonates, organic acid salts, fluorides, and the like are exemplified as preferable examples. More specifically, KOH, NaOH, LiOH, K 2 CO 3 , NaHCO 3 , KHCO 3 , KOAc, KF and the like.

パラジウム錯体化合物、そして塩基の使用割合は、原料のターピリジン化合物に対して、各々、モル比で、1×10-2〜3×10-1倍、5×10-1〜5倍の範囲とすることが好ましい。 The use ratio of the palladium complex compound and the base is in the range of 1 × 10 −2 to 3 × 10 −1 times and 5 × 10 −1 to 5 times in terms of molar ratio with respect to the starting terpyridine compound. It is preferable.

反応には溶媒を用いることができる。たとえばDMSO、DMF、THF、アルコール、水、ジオキサン、トルエン、ベンゼン等の1種または2種以上である。ただ、極性溶媒を用いることがより好ましい。   A solvent can be used for the reaction. For example, one or more of DMSO, DMF, THF, alcohol, water, dioxane, toluene, benzene and the like. However, it is more preferable to use a polar solvent.

反応は、大気もしくは不活性ガス雰囲気下において、常圧、もしくは減圧または加圧下とすることができる。大気中で行うことがより簡便であり、反応温度としては、6×10℃〜12×10℃のの範囲とすることがより好ましい。   The reaction can be under normal pressure, reduced pressure, or increased pressure in the atmosphere or an inert gas atmosphere. It is easier to carry out in the atmosphere, and the reaction temperature is more preferably in the range of 6 × 10 ° C. to 12 × 10 ° C.

また、本発明において、スペーサー分子鎖導入のための、前記式(2)で表されるホウ
素化合物は、たとえば、次式(5)
In the present invention, the boron compound represented by the formula (2) for introducing the spacer molecular chain is, for example, the following formula (5):

(式中のA2は炭化水素基を示し、X1はハロゲン原子を示す。)
で表わされる化合物と、次式(6)
(In the formula, A 2 represents a hydrocarbon group, and X 1 represents a halogen atom.)
And a compound represented by the following formula (6)

(式中のRa、Rb、Rc、Rdは各々、炭化水素基を示し、RaとRb、RcとRdは相互に結合していてもよい。)
で表されるホウ素化合物をカップリング反応させて合成することができる。なお、式(6)で表されるホウ素化合物は、式(5)で表される化合物に対して、通常は、モル比で0.1〜1.2倍使用することが考慮される。また、このカップリング反応は、上記の式(1)で表されるターピリジン化合物と式(2)で表されるホウ素化合物のカップリング反応と同様、上記のパラジウム(Pd)の錯体化合物と塩基を用いることが有効である。このパラジウム錯体化合物、そして塩基の使用割合は、前記式(6)で表される化合物に対して、各々、モル比で、1×10-2〜1×10-1倍、5×10-1〜5倍の範囲とすることが考慮される。また、この反応で使用する溶媒や反応条件についても上記カップリング反応と同様のものとすることができる。
(In the formula, R a , R b , R c and R d each represents a hydrocarbon group, and R a and R b , and R c and R d may be bonded to each other.)
Can be synthesized by a coupling reaction. In addition, it is considered that the boron compound represented by the formula (6) is usually used in a molar ratio of 0.1 to 1.2 times with respect to the compound represented by the formula (5). In addition, this coupling reaction is similar to the coupling reaction of the terpyridine compound represented by the above formula (1) and the boron compound represented by the formula (2) with the above complex compound of palladium (Pd) and a base. It is effective to use. The palladium complex compound and the use ratio of the base are 1 × 10 −2 to 1 × 10 −1 times and 5 × 10 −1 in molar ratio with respect to the compound represented by the formula (6). Considering a range of ˜5 times. In addition, the solvent and reaction conditions used in this reaction can be the same as in the above coupling reaction.

そこで以下に実施例を示し、さらに詳しく説明する。もちろん、以下の例によって発明が限定されることはない。   Therefore, an example will be shown below and will be described in more detail. Of course, the invention is not limited by the following examples.

(ホウ素化合物の合成) (Synthesis of boron compounds)

1,3−dibromobenzene 1(1.0g,4.24mmol)を20mL DMSOに溶かした溶液に、bispinacolatodiboron 2(2.4g,9.33mmol)、KOAc(2.1g,21.19mmol)、PdCl2
PPh32(149mg,0.21mmol)を加え、80oCで24時間攪拌した。室
温まで冷却した後、触媒をろ過で除き、CHCl3で希釈した。脱イオン水(50mL)
で5回洗浄した後、濃縮し、シリカゲルカラムクロマトグラフィー(hexane/EtOAc=20:1)で目的物3を単離した(1.06g,76%)。
In a solution of 1,3-dibromobenzene 1 (1.0 g, 4.24 mmol) in 20 mL DMSO, bispinolatodiboron 2 (2.4 g, 9.33 mmol), KOAc (2.1 g, 21.19 mmol), PdCl 2 (
PPh 3 ) 2 (149 mg, 0.21 mmol) was added and stirred at 80 ° C. for 24 hours. After cooling to room temperature, the catalyst was removed by filtration and diluted with CHCl 3 . Deionized water (50 mL)
Then, the mixture was concentrated, and the target compound 3 was isolated by silica gel column chromatography (hexane / EtOAc = 20: 1) (1.06 g, 76%).

(スペーサー導入型ビス−ターピリジン化合物の合成)
ジボロン酸3(50mg,0.152mmol)を15mL DMSOに溶かした溶液に、terpyridine 4(129mg,0.333)、K2CO3(139mg,0.758)、PdCl2(PPh32(11mg,10mol%)を加えた。TLCで
ジボロン酸3が消失するまで、アルゴン雰囲気下、80oCで加熱した。触媒をろ過で除
き、室温まで冷却した後に、CHCl3を加えた。ろ液を脱イオン水(30mL)で5回
洗浄し、MgSO4で乾燥させた。ろ過、濃縮後、カラムクロマトグラフィー(acti
vated basic Al23)で目的物5を単離した(76mg(73%))。
(Synthesis of spacer-introduced bis-terpyridine compound)
To a solution of diboronic acid 3 (50 mg, 0.152 mmol) in 15 mL DMSO, terpyridine 4 (129 mg, 0.333), K 2 CO 3 (139 mg, 0.758), PdCl 2 (PPh 3 ) 2 (11 mg). , 10 mol%). Heated at 80 ° C. under argon until diboronic acid 3 disappeared by TLC. After removing the catalyst by filtration and cooling to room temperature, CHCl 3 was added. The filtrate was washed 5 times with deionized water (30 mL) and dried over MgSO 4 . After filtration and concentration, column chromatography (acti
The target product 5 was isolated by using basic basic Al 2 O 3 (76 mg (73%)).

Biboronate 3(50mg,0.152mmol)を15mL DMSOに溶かした溶液に、terpyridine 6 (146 mg, 0.333)、K2
CO3(105mg,0.758)、PdCl2(PPh32(11mg,10mol%)を加えた。TLCでdiboronate 3が消失するまで、アルゴン雰囲気下80o
Cで加熱攪拌した。触媒をろ過し、室温に冷却した後、CHCl3で希釈した。ろ液を脱
イオン水(30mL)で5回洗浄した後、MgSO4で乾燥させた。濃縮後、カラムクロ
マトグラフィー(activated basic Al23)で目的物7を単離した(77mg(64%))。
A solution of Biboronate 3 (50 mg, 0.152 mmol) in 15 mL DMSO was mixed with terpyridine 3 (146 mg, 0.333), K 2.
CO 3 (105 mg, 0.758) and PdCl 2 (PPh 3 ) 2 (11 mg, 10 mol%) were added. 80 ° under argon until diboronate 3 disappears by TLC
The mixture was heated and stirred at C. The catalyst was filtered and cooled to room temperature before being diluted with CHCl 3 . The filtrate was washed 5 times with deionized water (30 mL) and then dried over MgSO 4 . After concentration, the desired product 7 was isolated by column chromatography (activated basic Al 2 O 3 ) (77 mg (64%)).

Biboronate 3(50mg,0.152mmol)を15mL DMSOに溶かした溶液に、terpyridine 8(149mg,0.333)、K2CO3(125mg,0.758)、PdCl2(PPh32(11mg,10mol%)を加え
た。TLCでdiboronate 3が消失するまで、アルゴン雰囲気下、80oCで
加熱攪拌した。触媒をろ過で取り除いた後、室温まで冷却しCHCl3 で希釈した。脱
イオン水(30mL)で5回洗浄し、MgSO4で乾燥させた。ろ過、濃縮後、カラムク
ロマトグラフィー(activated basic Al23)で目的物9を単離した(70mg(57%))。
In a solution of Biboronate 3 (50 mg, 0.152 mmol) in 15 mL DMSO, terpyridine 8 (149 mg, 0.333), K 2 CO 3 (125 mg, 0.758), PdCl 2 (PPh 3 ) 2 (11 mg, 10 mol%) was added. The mixture was heated and stirred at 80 ° C. under an argon atmosphere until diboronate 3 disappeared by TLC. The catalyst was removed by filtration, then cooled to room temperature and diluted with CHCl 3 . Washed 5 times with deionized water (30 mL) and dried over MgSO 4 . After filtration and concentration, the desired product 9 was isolated by column chromatography (activated basic Al 2 O 3 ) (70 mg (57%)).

本発明の合成方法を利用することで、発光機能や酸化還元機能を有するスペーサーを導入したビス(ターピリジン)化合物を合成することができる。これらの有機化合物を用いたハイブリッドポリマーを作ることで、有機エレクトロルミネッセンス素子における発光材料やホール輸送材料としての応用が考えられる。また、オリゴチオフェンなどの導電性スペーサーを導入したビス(ターピリジン)化合物を合成すれば、これを用いて作ったハイブリッドポリマーは高速応答性のエレクトロクロミック特性を示すと期待されるため、電子ペーパー等の表示材料への利用が期待される。   By using the synthesis method of the present invention, a bis (terpyridine) compound into which a spacer having a light emitting function or a redox function is introduced can be synthesized. By making a hybrid polymer using these organic compounds, application as a light emitting material or a hole transporting material in an organic electroluminescence element is conceivable. In addition, if a bis (terpyridine) compound into which a conductive spacer such as oligothiophene is introduced is synthesized, the hybrid polymer made using this compound is expected to show fast responsive electrochromic properties. Expected to be used for display materials.

Claims (3)

次式(1)

表わされるターピリジン化合物を、次式(2)

表わされるホウ素化合物の存在下であって、パラジウム錯体化合物と塩基の共存下にカップリング反応させて、次式(3)

表わされる化合物を合成する方法であって、
式(1)〜(3)中で、R 1 およびR 2 は、同一または別異に、各々、ハロゲン原子、炭化水素基、アルコキシ基、アミノ基、カルボニル基、カルボン酸エステル基、シアノ基、ニトロ基、または、これらを有する炭化水素基を示し、A 1 およびA 2 は、同一または別異であり、各々、炭化水素基を示し、Xはハロゲン原子を示し、R a とR b 、R c とR d は相互に結合していてもよく、R a 、R b 、R c 、R d は炭化水素基を示すことを特徴とするスペーサー導入型ビス(ターピリジン)化合物の合成方法。
The following formula (1)

In the represented by terpyridine compounds, the following formula (2)

A presence of a represented by boron compounds in, by a coupling reaction in the presence of a palladium complex compound with a base, the following equation (3)

The compound represented by a method of synthesizing,
In formulas (1) to (3), R 1 and R 2 are the same or different and each is a halogen atom, hydrocarbon group, alkoxy group, amino group, carbonyl group, carboxylic acid ester group, cyano group, A nitro group or a hydrocarbon group having these, A 1 and A 2 are the same or different, each represents a hydrocarbon group, X represents a halogen atom, R a and R b , R A method for synthesizing a spacer-introduced bis (terpyridine) compound, wherein c and R d may be bonded to each other, and R a , R b , R c , and R d represent a hydrocarbon group .
式(1)の符号A1および式(2)の符号A2の炭化水素基は、芳香族基または複素環基であることを特徴とする請求項1に記載の合成方法。 Hydrocarbon group code A 2 symbols A 1 and equation (2) of formula (1), the method of synthesis according to claim 1, characterized in that an aromatic group or a heterocyclic group. 式(1)、(2)中で、RIn the formulas (1) and (2), R 11 およびRAnd R 22 は、同一または別異に、各々、アルコキシ基、シアノ基またはこれらを有する炭化水素基を示すことを特徴とする請求項1に記載の合成方法。The same or different, respectively, represents an alkoxy group, a cyano group, or a hydrocarbon group having these, and the synthesis method according to claim 1.
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