WO2011021689A1 - 環状アジン誘導体とそれらの製造方法、ならびにそれらを構成成分とする有機電界発光素子 - Google Patents
環状アジン誘導体とそれらの製造方法、ならびにそれらを構成成分とする有機電界発光素子 Download PDFInfo
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- WO2011021689A1 WO2011021689A1 PCT/JP2010/064070 JP2010064070W WO2011021689A1 WO 2011021689 A1 WO2011021689 A1 WO 2011021689A1 JP 2010064070 W JP2010064070 W JP 2010064070W WO 2011021689 A1 WO2011021689 A1 WO 2011021689A1
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- 0 C[C@]1C(C)=C[C@@](CN(C)*)C[C@]2[C@]1C2* Chemical compound C[C@]1C(C)=C[C@@](CN(C)*)C[C@]2[C@]1C2* 0.000 description 6
- CFHGXIFTEJBEKP-UHFFFAOYSA-N Brc1cc(-c2nc(-c3cc4ccccc4cc3)nc(-c3cc(cccc4)c4cc3)n2)cc(Br)c1 Chemical compound Brc1cc(-c2nc(-c3cc4ccccc4cc3)nc(-c3cc(cccc4)c4cc3)n2)cc(Br)c1 CFHGXIFTEJBEKP-UHFFFAOYSA-N 0.000 description 1
- DRQMSTXYCLCAHO-UHFFFAOYSA-N Brc1cc(-c2nc(-c3ccccc3)nc(-c3ccccc3)n2)cc(Br)c1 Chemical compound Brc1cc(-c2nc(-c3ccccc3)nc(-c3ccccc3)n2)cc(Br)c1 DRQMSTXYCLCAHO-UHFFFAOYSA-N 0.000 description 1
- OSRSESUYXSEFCS-UHFFFAOYSA-N Brc1cc(Br)cc(-c2nc(-c3ccccc3)cc(-c3ccccc3)n2)c1 Chemical compound Brc1cc(Br)cc(-c2nc(-c3ccccc3)cc(-c3ccccc3)n2)c1 OSRSESUYXSEFCS-UHFFFAOYSA-N 0.000 description 1
- VTNQUMTVSDWODX-UHFFFAOYSA-N C=[Br]c(cc1)ccc1-c1cccnc1 Chemical compound C=[Br]c(cc1)ccc1-c1cccnc1 VTNQUMTVSDWODX-UHFFFAOYSA-N 0.000 description 1
- XTUKPAGYYPYYGY-VIZOYTHASA-N CC/C=C(\C=C)/c(cc1)cc2c1c1ccccc1cc2 Chemical compound CC/C=C(\C=C)/c(cc1)cc2c1c1ccccc1cc2 XTUKPAGYYPYYGY-VIZOYTHASA-N 0.000 description 1
- RJHOENJYLHKOBL-UHFFFAOYSA-N CC1(C)OB(c2cc(B3OC(C)(C)C(C)(C)O3)cc(-c3nc(-c4ccccc4)cc(-c4ccccc4)n3)c2)OC1(C)C Chemical compound CC1(C)OB(c2cc(B3OC(C)(C)C(C)(C)O3)cc(-c3nc(-c4ccccc4)cc(-c4ccccc4)n3)c2)OC1(C)C RJHOENJYLHKOBL-UHFFFAOYSA-N 0.000 description 1
- DAMPQOBSEIKINN-TVNVYQQKSA-N CCC([C@@H](C)[C@H](C)CN/C(/c1ccccc1)=N\C(c1ccccc1)=N)/C=C\CC Chemical compound CCC([C@@H](C)[C@H](C)CN/C(/c1ccccc1)=N\C(c1ccccc1)=N)/C=C\CC DAMPQOBSEIKINN-TVNVYQQKSA-N 0.000 description 1
- ZCPOYGPCOQJLFU-QTPLPEIMSA-N C[C@@H](CCC1)C=C1[AlH2] Chemical compound C[C@@H](CCC1)C=C1[AlH2] ZCPOYGPCOQJLFU-QTPLPEIMSA-N 0.000 description 1
- PJRGXMNLPGYDFK-BYPYZUCNSA-N C[C@@H](NC)NC=N Chemical compound C[C@@H](NC)NC=N PJRGXMNLPGYDFK-BYPYZUCNSA-N 0.000 description 1
- WMZDENWILKBJTF-UHFFFAOYSA-N Cc1c(-c2ccccc2)nc(-c2cc(Br)cc(-c(cc3)cc4c3c3ccccc3cc4)c2)nc1-c1ccccc1 Chemical compound Cc1c(-c2ccccc2)nc(-c2cc(Br)cc(-c(cc3)cc4c3c3ccccc3cc4)c2)nc1-c1ccccc1 WMZDENWILKBJTF-UHFFFAOYSA-N 0.000 description 1
- QUMVCPPXBZHOSQ-UHFFFAOYSA-N Clc1cc(-c2cc(-c3cccc(Cl)c3)cc(-c3nc(-c4ccccc4)cc(-c4ccccc4)n3)c2)ccc1 Chemical compound Clc1cc(-c2cc(-c3cccc(Cl)c3)cc(-c3nc(-c4ccccc4)cc(-c4ccccc4)n3)c2)ccc1 QUMVCPPXBZHOSQ-UHFFFAOYSA-N 0.000 description 1
- HLAJZZSBQMLRKM-UHFFFAOYSA-N O=C(c1cc(Br)cc(Br)c1)Cl Chemical compound O=C(c1cc(Br)cc(Br)c1)Cl HLAJZZSBQMLRKM-UHFFFAOYSA-N 0.000 description 1
- YCEGYTVKEHDVIH-UHFFFAOYSA-N c(cc1)ccc1-c1nc(-c2cc(-c(cc3)ccc3-c3cccnc3)cc(-c(cc3)ccc3-c3cnccc3)c2)nc(-c2ccccc2)c1 Chemical compound c(cc1)ccc1-c1nc(-c2cc(-c(cc3)ccc3-c3cccnc3)cc(-c(cc3)ccc3-c3cnccc3)c2)nc(-c2ccccc2)c1 YCEGYTVKEHDVIH-UHFFFAOYSA-N 0.000 description 1
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Definitions
- the present invention relates to a cyclic azine derivative having two different types of substituents on the azine ring and a method for producing the same. These cyclic azine derivatives are useful as components of fluorescent or phosphorescent organic electroluminescent devices because they have good charge transport properties. Therefore, the present invention further relates to a high-efficiency organic electroluminescent device excellent in drivability and luminescent property, in which these are used in at least one organic compound layer of the organic electroluminescent device.
- An organic electroluminescent device has a structure in which a light-emitting layer containing a light-emitting material is sandwiched between a hole transport layer and an electron transport layer, and an anode and a cathode are attached to the outside, and holes injected into the light-emitting layer And an element that utilizes light emission (fluorescence or phosphorescence) when excitons generated by electron recombination are deactivated.
- Organic electroluminescent elements are widely applied to displays and the like.
- Patent Documents 1 and 2 disclose examples in which pyrimidines are used for organic electroluminescent elements. These are not limited to substitution positions on the phenyl group at the 2-position of the pyrimidine ring, but are specific examples of pyrimidines substituted with a 3,5-disubstituted phenyl group, such as the pyrimidine derivative of the compound (1a) of the present invention. No example is described. Further, specific examples of pyrimidines substituted with a 3,5-disubstituted phenyl group such as the pyrimidine derivative of the compound (1a) of the present invention are not described.
- Patent Documents 3 and 4 disclose examples in which pyrimidines having a 4-substituted phenyl group are used in an organic electroluminescent device, which are characterized by having a 3,5-disubstituted phenyl group. It is different from the compound (1a) of the present invention.
- Patent Document 5 discloses an example in which pyrimidines having a phenyl group fused with an aromatic hetero 5-membered ring are used in an organic electroluminescence device, and these have a 3,5-disubstituted phenyl group. This is different from the compound (1a) of the present invention.
- Patent Document 6 discloses an example (Synthesis Example 4) of a pyrimidine having a substituted phenyl group at the 2-position of the pyrimidine ring.
- the substituent at the 3,5-positions of this substituted phenyl group is “unsubstituted phenyl group”. It is.
- the substituted phenyl group at the 2-position of the pyrimidine ring is not necessarily substituted with a substituted phenyl group having a substituent or a group 16 element. It is completely different in that it is a group, and also completely different from the compound (1c) of the present invention.
- Patent Document 7 discloses an example in which a 1,3,5-triazine derivative is used for an organic electroluminescence device. These 1,3,5-triazine derivatives do not have a polycyclic aromatic group and are different from any of the compounds (1b) and (1c) of the present invention.
- Patent Documents 8 and 9 disclose examples in which a 1,3,5-triazine derivative having a polycyclic aromatic group is used for an organic electroluminescence device. These triazine derivatives are limited to those causing structural isomerism due to steric hindrance of polycyclic aromatic groups, and these are different from any of the compounds (1b) and (1d) of the present invention.
- the triazine derivative described in Patent Document 8 describes an example in which the phenyl group bonded to 1,3,5-triazine has an aromatic hydrocarbon group composed of two 2-4 rings. Absent.
- both patent documents do not describe any glass transition temperature (Tg) and electron mobility of the compound.
- Patent Document 10 discloses an example of a compound having 1,3,5-triazine and a pyrenyl group (compound 6-13). However, there are no specific examples of such compounds, and there is no description regarding Tg and mobility.
- Patent Documents 9 and 11 disclose examples in which a 1,3,5-triazine derivative, which is a cyclic azine, is used for an organic electroluminescence device.
- the position of the substituent on the phenyl group at the 2,4,6-position of the triazine ring is not limited, and the 3,5-disubstituted phenyl group or 2,6-
- the compound (1c) of the present invention having a disubstituted pyridyl group is not specifically shown.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-45662
- Patent Document 2 Japanese Patent Application Laid-Open No. 2004-31044
- Patent Document 3 Japanese Patent Application Publication No. 20040397786
- Patent Document 4 Japanese Patent Application Publication No. 2005095950
- Patent Document 7 Japanese Patent Application Laid-Open No. 2008-280330
- Patent Document 8 Japanese Patent Application Laid-Open No. 2001-143869
- Patent Document 9 Japanese Patent Application Laid-Open No. 2004-22334
- Patent Document 10 Japanese Patent Application Laid-Open No. 2004-2297 2007-137829
- An object of the present invention is an organic electroluminescence device that can be driven at a low voltage and has a high efficiency, a high glass transition temperature, and a high electron mobility when used as a constituent material of an organic electroluminescence device.
- the object is to provide a cyclic azine derivative having a novel structure which provides a device or an organic electroluminescent device having excellent charge injection and transport properties and durability that enables a long lifetime of the device.
- Another object of the present invention is to provide an industrially advantageous method for producing the above cyclic azine derivative. Still another object of the present invention is to provide an organic electroluminescent device comprising the cyclic azine derivative as a constituent component, which is industrially advantageous.
- the present inventors have found that the cyclic azine derivative (1) of the present invention in which two kinds of different substituents are introduced on the azine ring, vacuum deposition, spin coating, etc. It was found that a thin film can be formed by this general method and has good charge transport characteristics.
- fluorescent or phosphorescent organic electroluminescent devices using these as organic compound layers effectively contain excitons, resulting in lower device driving voltage and higher efficiency emission than when using general-purpose organic materials. It has been found that the above can be achieved simultaneously, and the present invention has been completed.
- the present invention provides, in one aspect, the general formula (1)
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- A represents a kind of group selected from the groups represented by the following general formulas (2) to (5).
- It is related with the cyclic azine derivative shown by these.
- Ar 2 represents a substituted phenyl group or a condensed phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group. ]
- Ar 3 represents a phenyl group, a pyridyl group or a pyrimidyl group.
- Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- X represents a phenylene group or a pyridylene group.
- p represents an integer of 0 to 2. When p is 2, X may be the same or different.
- Z 1 represents a carbon atom or a nitrogen atom.
- Ar 5 and Ar 6 represents a phenyl group, or a pyridyl group.
- Z 2 and Z 3 represent a carbon atom or a nitrogen atom. However, when Z 3 is a carbon atom, Ar 5 and Ar 6 cannot simultaneously be a phenyl group.
- Ar 4 represents an aromatic hydrocarbon group composed of 2 to 4 rings which may be independently substituted.
- the general formula (6) [In the formula (6), Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group. Y 1 represents a chlorine atom, a bromine atom or an iodine atom. ] And a compound of the general formula (7) [In the formula (7), Ar 2 represents a substituted phenyl group or a condensed phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group. M represents a metal group or a hetero atom group.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 2 represents a substituted phenyl group or a condensed ring phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group.
- the present invention relates to a method for producing a cyclic azine derivative represented by the formula:
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and R 1 in two B (OR 1 s ) may be the same or different. Two R 1 s in each B (OR 1 ) can be combined to form a ring containing an oxygen atom and a boron atom.
- Ar 2 represents a substituted phenyl group or a condensed phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- a compound represented by the general formula (1a) wherein a coupling reaction is carried out in the presence of a base and a palladium catalyst.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 2 represents a substituted phenyl group or a condensed ring phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group.
- the present invention relates to a method for producing a cyclic azine derivative represented by the formula:
- the general formula (10) [In the formula (10), Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- Z 1 represents a carbon atom or a nitrogen atom.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- a compound of the general formula (11) [In formula (11), Ar 3 represents a phenyl group, a pyridyl group or a pyrimidyl group.
- X represents a phenylene group or a pyridylene group.
- p represents an integer of 0 to 2. When p is 2, X may be the same or different.
- M represents a metal group or a hetero atom group.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 3 represents a phenyl group, a pyridyl group or a pyrimidyl group.
- Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- X represents a phenylene group or a pyridylene group.
- p represents an integer of 0 to 2. When p is 2, X may be the same or different.
- Z 1 represents a carbon atom or a nitrogen atom.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Z 2 represents a carbon atom or a nitrogen atom.
- R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and R 1 in two B (OR 1 ) 2s may be the same or different. Two R 1 s in each B (OR 1 ) 2 may be combined to form a ring containing an oxygen atom and a boron atom.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 5 and Ar 6 represent a phenyl group or a pyridyl group.
- Z 2 and Z 3 represent a carbon atom or a nitrogen atom. However, when Z 3 is a carbon atom, Ar 5 and Ar 6 cannot simultaneously be a phenyl group.
- the present invention relates to a method for producing a cyclic azine derivative represented by the formula:
- the general formula (14) [In the formula (14), Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group. R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a phenyl group, and R 1 in two B (OR 1 ) 2s may be the same or different. Two R 1 s in each B (OR 1 ) 2 may be combined to form a ring containing an oxygen atom and a boron atom. ] And a compound of the general formula (15) [In the formula (15), Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 4 represents an aromatic hydrocarbon group composed of 2 to 4 rings which may be independently substituted.
- the present invention relates to a method for producing a cyclic azine derivative represented by the formula:
- the general formula (1) [In the formula (1), Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group. A represents a kind of group selected from the groups represented by the following general formulas (2) to (5). ]
- the organic electroluminescent element which uses the cyclic azine derivative shown by these as a structural component.
- Ar 2 represents a substituted phenyl group or a condensed phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group. ]
- Ar 3 represents a phenyl group, a pyridyl group or a pyrimidyl group.
- Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- X represents a phenylene group or a pyridylene group.
- p represents an integer of 0 to 2. When p is 2, X may be the same or different.
- Z 1 represents a carbon atom or a nitrogen atom.
- Ar 5 and Ar 6 represents a phenyl group, or a pyridyl group.
- Z 2 and Z 3 represent a carbon atom or a nitrogen atom. However, when Z 3 is a carbon atom, Ar 5 and Ar 6 cannot simultaneously be a phenyl group.
- Ar 4 represents an aromatic hydrocarbon group composed of 2 to 4 rings which may be independently substituted.
- the cyclic azine derivative having a novel structure according to the present invention is used as a part of a fluorescent or phosphorescent organic electroluminescence device, thereby providing an organic electroluminescence device capable of low voltage driving and high efficiency light emission.
- the thin film comprising the cyclic azine derivative of the present invention has high surface smoothness, amorphousness, heat resistance, electron transport ability, hole blocking ability, redox resistance, water resistance, oxygen resistance, electron injection characteristics. Therefore, it is useful as a material for organic electroluminescent elements, and can be used as an electron transport material, a hole blocking material, a light emitting host material, and the like.
- a phenyl group which may be substituted with a group, a phenyl group or a pyridyl group, an alkyl group having 1 to 4 carbon atoms, a naphthyl group which may be substituted with a phenyl group or pyridyl group, an alkyl group having 1 to 4 carbon atoms, Anthryl group optionally substituted with phenyl group or pyridyl group, alkyl group having 1 to 4 carbon atoms, phenanthryl group optionally substituted with phenyl group or pyridyl group, alkyl group having 1 to 4 carbon atoms, phenyl group Or the pyridyl group etc.
- a phenyl group which may be substituted with an alkyl group having 1 to 4 carbon atoms examples include a p-tolyl group, an m-tolyl group, an o-tolyl group, 4-trifluoro Methylphenyl group, 3-trifluoromethylphenyl group, 2-trifluoromethylphenyl group, 2,4-dimethylphenyl group, 3,5-dimethylphenyl group, 2,6-dimethylphenyl group, mesityl group, 2-ethyl Phenyl group, 3-ethylphenyl group, 4-ethylphenyl group, 2,4-diethylphenyl group, 3,5-diethylphenyl group, 2-propylphenyl group, 3-propylphen
- the phenyl group which may be substituted in view of good performance as a material for an organic electroluminescence device includes a phenyl group, a p-tolyl group, an m-tolyl group, an o-tolyl group, and a 2,6-dimethylphenyl group.
- the optionally substituted naphthyl group includes 4-methylnaphthalen-1-yl group, 4-trifluoromethylnaphthalen-1-yl group, and 4-ethylnaphthalene group.
- the naphthyl group which may be substituted is a 1-naphthyl group, a 4-methylnaphthalen-1-yl group, a 4-tert-butylnaphthalen-1-yl group in terms of good performance as a material for an organic electroluminescence device.
- anthryl group examples include 1-anthryl group, 2-anthryl group, 9-anthryl group, 2-methylanthracen-1-yl group, 3-methylanthracen-1-yl group, 4- Methyl anthracen-1-yl group, 9-methylanthracen-1-yl group, 10-methylanthracen-1-yl group, 2-phenylanthracen-1-yl group, 3-phenylanthracen-1-yl group, 4- Phenylanthracen-1-yl group, 5-phenylanthracen-1-yl group, 6-phenylanthracen-1-yl group, 7-phenylanthracen-1-yl group, 8-phenylanthracen-1-yl group, 9- Phenylanthracen-1-yl group, 10-phenylanthracen-1-yl group, 1-methylanthracen-2-yl group, -Methylanthracen-2-yl group, 4-methylanthracen-2-yl group
- the anthryl group which may be substituted in terms of good performance as a material for an organic electroluminescent device includes a 1-anthryl group, a 2-anthryl group, a 9-anthryl group, a 4-phenylanthracen-1-yl group, A 4-phenylanthracen-9-yl group is preferable, and a 1-anthryl group, a 2-anthryl group, and a 9-anthryl group are more preferable from the viewpoint of low molecular weight.
- the phenanthryl group which may be substituted includes 1-phenanthryl group, 2-phenanthryl group, 3-phenanthryl group, 4-phenanthryl group, 9-phenanthryl group, 2-phenylphenanthren-1-yl group, 3- Phenylphenanthren-1-yl group, 4-phenylphenanthren-1-yl group, 9-phenylphenanthren-1-yl group, 1-phenylphenanthren-2-yl group, 3-phenylphenanthren-2-yl group, 4- Phenylphenanthren-2-yl group, 8-phenylphenanthren-2-yl group, 8-phenylphenanthren-3-yl group, 9-phenylphenanthren-2-yl group, 1-phenylphenanthren-3-yl group, 2- Phenylphenanthren-3-yl group, 4-phenylphenanthate 3-yl group, 9-phenylphenanthren-3-yl group, 1-phenylphenanthren-4-yl group, 2-phen
- Examples of the phenanthryl group which may be substituted from the viewpoint of good performance as a material for an organic electroluminescence device include 2-phenanthryl group, 3-phenanthryl group, 8-phenylphenanthren-2-yl group, 8-phenylphenanthrene- A 3-yl group is preferable, and a 2-phenanthryl group and a 3-phenanthryl group are more preferable in terms of low molecular weight.
- the pyridyl group which may be substituted includes 2-pyridyl group, 3-pyridyl group, 4-pyridyl group, 3-methylpyridin-2-yl group, 4-methylpyridin-2-yl group, 5- Methylpyridin-2-yl group, 6-methylpyridin-2-yl group, 2-methylpyridin-3-yl group, 4-methylpyridin-3-yl group, 5-methylpyridin-3-yl group, 6- Methylpyridin-3-yl group, 2-methylpyridin-4-yl group, 3-methylpyridin-4-yl group, 3-ethylpyridin-2-yl group, 4-ethylpyridin-2-yl group, 2- Ethylpyridin-3-yl group, 5-ethylpyridin-3-yl group, 2-ethylpyridin-4-yl group, 3-ethylpyridin-4-yl group, 3-propylpyridin-2-yl group, 4- Buty
- the pyridyl group which may be substituted in terms of good performance as a material for an organic electroluminescence device includes a 2-pyridyl group, a 3-pyridyl group, a 4-pyridyl group, a 4-methylpyridin-2-yl group, A 6-methylpyridin-2-yl group, a 6-methylpyridin-3-yl group, a 4-tert-butylpyridin-2-yl group, and a 6-tert-butylpyridin-2-yl group are preferable and easy to synthesize. In some respects, a 2-pyridyl group is more preferred.
- the substituted phenyl group represented by Ar 2 is a phenyl group substituted with an alkyl group having 1 to 4 carbon atoms (however, 1,3,5-trimethylphenyl group is not included)
- a phenyl group substituted with a halogen atom a phenyl group substituted with an optionally substituted phenyl group, a phenyl group substituted with an optionally substituted pyrimidyl group, and a substituent.
- a phenyl group substituted with a thiazolyl group, a phenyl group substituted with a pyridyl group, or a phenyl group substituted with a phenanthryl group are examples of the present invention is not limited thereto.
- Examples of the phenyl group substituted with an alkyl group having 1 to 4 carbon atoms include p-tolyl group, m-tolyl group, o-tolyl group, 4-trifluoromethylphenyl group, 3-trifluoromethylphenyl group, 2- Trifluoromethylphenyl group, 2,4-dimethylphenyl group, 3,5-dimethylphenyl group, 2,6-dimethylphenyl group, mesityl group, 2-ethylphenyl group, 3-ethylphenyl group, 4-ethylphenyl group 2,4-diethylphenyl group, 3,5-diethylphenyl group, 2-propylphenyl group, 3-propylphenyl group, 4-propylphenyl group, 2,4-dipropylphenyl group, 3,5-dipropyl Phenyl group, 2-isopropylphenyl group, 3-isopropylphenyl group, 4-isopropylphen
- the phenyl group substituted with an alkyl group having 1 to 4 carbon atoms is a p-tolyl group, m-tolyl group, o-tolyl group, 4-trifluoro group in terms of good performance as a material for an organic electroluminescence device.
- a methylphenyl group and a 4-butylphenyl group are preferable, and a p-tolyl group and an m-tolyl group are more preferable because they are inexpensive.
- Examples of the phenyl group substituted with a halogen atom include 3-chlorophenyl group, 4-chlorophenyl group, 3,4-dichlorophenyl group, 3,5-dichlorophenyl group, 3-bromophenyl group, 4-bromophenyl group, 3,4 -Dibromophenyl group, 3,5-dibromophenyl group and the like.
- a 3-chlorophenyl group is preferred because it is easy to synthesize.
- phenyl group substituted with an optionally substituted phenyl group examples include 4-biphenylyl group, 3-biphenylyl group, 2-biphenylyl group, 2-methylbiphenyl-4-yl group, 3-methylbiphenyl- 4-yl group, 2′-methylbiphenyl-4-yl group, 4′-methylbiphenyl-4-yl group, 2,2′-dimethylbiphenyl-4-yl group, 2 ′, 4 ′, 6′-trimethyl Biphenyl-4-yl group, 6-methylbiphenyl-3-yl group, 5-methylbiphenyl-3-yl group, 2′-methylbiphenyl-3-yl group, 4′-methylbiphenyl-3-yl group, 6 , 2′-dimethylbiphenyl-3-yl group, 2 ′, 4 ′, 6′-trimethylbiphenyl-3-yl group, 5-methylbiphenyl-2-
- the phenyl group substituted with a phenyl group which may have a substituent in terms of good performance as a material for an organic electroluminescence device includes a 2-biphenylyl group, a 3-biphenylyl group, a 4-biphenylyl group, 1 , 1 ′: 3 ′, 1 ′′ -terphenyl-5′-yl group, 2 ′-(2-pyridyl) biphenyl-3-yl group, 3 ′-(2-pyridyl) biphenyl-3-yl group, 4 A '-(2-pyridyl) biphenyl-3-yl group is preferable, and a 3-biphenylyl group and a 3'-(2-pyridyl) biphenyl-3-yl group are more preferable from the viewpoint of easy synthesis.
- Examples of the phenyl group substituted with an optionally substituted pyrimidyl group include 2- (2-pyrimidyl) phenyl group, 3- (2-pyrimidyl) phenyl group, 4- (2-pyrimidyl) phenyl group, 2- (4-pyrimidyl) phenyl group, 3- (4-pyrimidyl) phenyl group, 4- (4-pyrimidyl) phenyl group, 2- (5-pyrimidyl) phenyl group, 3- (5-pyrimidyl) phenyl group, 4- (5-pyrimidyl) phenyl group, 2- (4,6-dimethylpyrimidin-2-yl) phenyl group, 3- (4,6-dimethylpyrimidin-2-yl) phenyl group, 4- (4,6 -Dimethylpyrimidin-2-yl) phenyl group, 2- (4,6-diphenylpyrimidin-2-yl) phenyl group, 3- (4,6-
- Examples of the phenyl group substituted with an optionally substituted pyrimidyl group include 4- (2-pyrimidyl) phenyl group and 4- (5-pyrimidyl) in terms of good performance as a material for organic electroluminescent elements.
- Phenyl group, 3- (4,6-dimethylpyrimidin-2-yl) phenyl group, 4- (4,6-dimethylpyrimidin-2-yl) phenyl group, 3- (4,6-diphenylpyrimidin-2- Yl) phenyl group and 4- (4,6-diphenylpyrimidin-2-yl) phenyl group are preferred, and 4- (2-pyrimidyl) phenyl group and 4- (5-pyrimidyl) phenyl group are easy to synthesize. More preferred are groups.
- Examples of the phenyl group substituted with an optionally substituted thiazolyl group include 2- (2-thiazolyl) phenyl group, 3- (2-thiazolyl) phenyl group, 4- (2-thiazolyl) phenyl group, 2- (4-thiazolyl) phenyl group, 3- (4-thiazolyl) phenyl group, 4- (4-thiazolyl) phenyl group, 2- (5-thiazolyl) phenyl group, 3- (5-thiazolyl) phenyl group, 4- (5-thiazolyl) phenyl group, 3- (2-methylthiazol-4-yl) phenyl group, 4- (2-methylthiazol-5-yl) phenyl group, 2- (4,5-dimethylthiazole- 2-yl) phenyl group, 3- (4,5-dimethylthiazol-2-yl) phenyl group, 4- (4,5-dimethylthiazol-2-yl) phenyl group, 2- (2-phenyl
- the phenyl group substituted with a thiazolyl group which may have a substituent in terms of good performance as a material for an organic electroluminescent device includes a 3- (4,5-diphenylthiazol-2-yl) phenyl group 4- (4,5-diphenylthiazol-2-yl) phenyl group and 4- (2-benzothiazolyl) phenyl group are preferable, and 4- (2-benzothiazolyl) phenyl group is more preferable in terms of easy synthesis. .
- the phenyl group substituted with a pyridyl group includes a 2- (2-pyridyl) phenyl group, a 3- (2-pyridyl) phenyl group, a 4- (2-pyridyl) phenyl group, and a 2- (3-pyridyl) phenyl group.
- the phenyl group substituted with the pyridyl group is a 2- (2-pyridyl) phenyl group, 3- (2-pyridyl) phenyl group, 4- (2- Pyridyl) phenyl group, 3- (3-pyridyl) phenyl group, 4- (3-pyridyl) phenyl group, 3- (4-pyridyl) phenyl group, 4- (4-pyridyl) phenyl group, 5-phenyl-3 -(2-pyridyl) phenyl group, 5-phenyl-3- (3-pyridyl) phenyl group, 5-phenyl-3- (4-pyridyl) phenyl group, 3,5-di (2-pyridyl) phenyl group 2- (2-pyridyl) phenyl group, 3- (2-pyridyl) phenyl group, 4- (3-pyridyl) phenyl group, 4- (4-pyridy
- Examples of the phenyl group substituted with a phenanthroyl group include a 2- (2-phenanthroyl) phenyl group, a 3- (2-phenanthroyl) phenyl group, a 4- (2-phenanthroyl) phenyl group, and a 2- (3-phenanthroyl) phenyl group.
- the phenyl group substituted with a phenanthroyl group is a 3- (2-phenanthroyl) phenyl group, a 4- (2-phenanthroyl) phenyl group, a 3- (3- A phenanthroyl) phenyl group and a 4- (3-phenanthroyl) phenyl group are preferable, and a 4- (2-phenanthroyl) phenyl group is more preferable in terms of easy synthesis.
- the condensed phenyl group that does not contain the group 16 element represented by Ar 2 must not contain any group 16 element in the periodic table such as an oxygen atom and a sulfur atom in the ring structure.
- the condensed phenyl group is preferably a 2-naphthyl group, a 9-anthryl group, a 3-phenanthryl group, or a 6-quinolyl group, because it is easy to synthesize. More preferred is a 6-quinolyl group.
- Ar 3 represents a phenyl group, a pyridyl group or a pyrimidyl group.
- the optionally substituted aromatic hydrocarbon group represented by 2 to 4 rings represented by Ar 4 includes an optionally substituted naphthyl group and an optionally substituted anthryl group.
- Examples of the optionally substituted naphthyl group represented by Ar 4 include 1-naphthyl group, 2-naphthyl group, 4-methylnaphthalen-1-yl group, 4-trifluoromethylnaphthalen-1-yl group 4-ethylnaphthalen-1-yl group, 4-propylnaphthalen-1-yl group, 4-butylnaphthalen-1-yl group, 4-tert-butylnaphthalen-1-yl group, 5-methylnaphthalene-1- Yl group, 5-trifluoromethylnaphthalen-1-yl group, 5-ethylnaphthalen-1-yl group, 5-propylnaphthalen-1-yl group, 5-butylnaphthalen-1-yl group, 5-tert-butyl Naphthalen-1-yl group, 6-methylnaphthalen-2-yl group, 6-trifluoromethylnaphthalen-2-yl group, 6-ethylnaphthalen-2-y
- Examples of the optionally substituted anthryl group represented by Ar 4 include 1-anthryl group, 2-anthryl group, 9-anthryl group, 2-methylanthracen-1-yl group, 3-methylanthracene-1 -Yl group, 4-methylanthracen-1-yl group, 9-methylanthracen-1-yl group, 10-methylanthracen-1-yl group, 2-phenylanthracen-1-yl group, 3-phenylanthracene-1 -Yl group, 4-phenylanthracen-1-yl group, 5-phenylanthracen-1-yl group, 6-phenylanthracen-1-yl group, 7-phenylanthracen-1-yl group, 8-phenylanthracene-1 -Yl group, 9-phenylanthracen-1-yl group, 10-phenylanthracen-1-yl group, 1-methylanthracene- 2-yl group, 3-methylanthracen-2-yl group, 4-methylanthracen-2
- Examples of the optionally substituted phenanthryl group represented by Ar 4 include 1-phenanthryl group, 2-phentolyl group, 3-phenanthryl group, 4-phenanthryl group, 2-phenylphenanthren-1-yl group, 3 -Phenylphenanthren-1-yl group, 4-phenylphenanthren-1-yl group, 9-phenylphenanthren-1-yl group, 1-phenylphenanthren-2-yl group, 3-phenylphenanthren-2-yl group, 4 -Phenylphenanthren-2-yl group, 9-phenylphenanthren-2-yl group, 1-phenylphenanthren-3-yl group, 2-phenylphenanthren-3-yl group, 4-phenylphenanthren-3-yl group, 9 -Phenylphenanthren-3-yl group, 1-phenylphenanthrene-4-y Group, 2-phenylphenanthren-4-yl group, 3-phenylphenanthren-4-yl group, 9-
- Examples of the optionally substituted fluorenyl group represented by Ar 4 include 9,9-dimethylfluoren-1-yl group, 9,9-dimethylfluoren-2-yl group, and 9,9-dimethylfluorene-3- Yl group, 9,9-dimethylfluoren-4-yl group, 9,9-diphenylfluoren-1-yl group, 9,9-diphenylfluoren-2-yl group, 9,9-diphenylfluoren-3-yl group , 9,9-diphenylfluoren-4-yl group and the like, and a fluorenyl group substituted with an alkyl group having 1 to 4 carbon atoms or a phenyl group, and the performance as a material for an organic electroluminescent device is good.
- 9-dimethylfluoren-2-yl group, 9,9-dimethylfluoren-3-yl group, and 9,9-diphenylfluoren-2-yl group are preferred, More preferred is a 9-dimethylfluoren-2-yl group.
- the optionally substituted benzofluorenyl group represented by Ar 4 includes 9,9-dimethylbenzo [a] fluoren-3-yl group, 9,9-dimethylbenzo [a] fluoren-4-yl A group, 9,9-dimethylbenzo [a] fluoren-5-yl group, 9,9-dimethylbenzo [a] fluoren-6-yl group, 9,9-dimethylbenzo [a] fluoren-7-yl group, 9,9-dimethylbenzo [a] fluoren-8-yl group, 9,9-dimethylbenzo [b] fluoren-1-yl group, 9,9-dimethylbenzo [b] fluoren-4-yl group, 9-dimethylbenzo [b] fluoren-5-yl group, 9,9-dimethylbenzo [b] fluoren-6-yl group, 9,9-dimethylbenzo [b] fluoren-7-yl group, 9,9- Dimethylbenzo [b] Fluoren-8-y
- the optionally substituted pyrenyl group represented by Ar 4 includes 1-pyrenyl group, 6-phenylpyren-1-yl group, 7-phenylpyren-1-yl group, and 8-phenylpyren-1-yl.
- a 1-pyrenyl group and a 2-pyrenyl group are preferable, and a 2-pyrenyl group is more preferable in terms of easy synthesis.
- Examples of the optionally substituted triphenylenyl group represented by Ar 4 include a 1-triphenylenyl group and a 2-triphenylenyl group.
- X represents a phenylene group or a pyridylene group.
- the compound represented by the general formula (11) can be produced, for example, by using the method disclosed in JP 2008-280330 A (0061) to (0076). Examples of the compound (11) include the compounds shown in the following 11-1 to 11-79, but the present invention is not limited to these.
- the metal group represented by M is not particularly limited as long as it is used for a general coupling reaction, and Li, Na, MgCl, MgBr, MgI, CuCl, CuBr, CuI, AlCl 2 , AlBr 2 , Examples include Al (Me) 2 , Al (Et) 2 , Al ( i Bu) 2 , Sn (Me) 3 , Sn (Bu) 3 , ZnR 2, etc., where ZnR 2 includes ZnCl, ZnBr, Examples include ZnI.
- the metal group is preferably ZnCl, more preferably ZnCl (TMEDA) coordinated with tetramethylethylenediamine.
- Examples of the heteroatom group represented by M include Si (Ph) 3 , SnF 3 , B (OR 2 ) 2, etc., and B (OR 1 ) 2 includes B (OH) 2 , B (OMe) 2 , B (O i Pr) 2 , B (OBu) 2 , B (OPh) 2 and the like.
- Examples of B (OR 1 ) 2 in the case where two R 1 are combined to form a ring containing an oxygen atom and a boron atom include groups represented by the following (I) to (VI): The group represented by (II) is preferable because it can be exemplified and yield is good.
- the cyclic azine derivative (1a) of the present invention has the following reaction formula:
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 2 represents a substituted phenyl group or a condensed ring phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- M represents a metal group or a hetero atom group.
- Step 1 is a step of obtaining the cyclic azine derivative (1a) of the present invention by reacting the compound (6) with the compound (7) in the presence of a palladium catalyst in the presence of a palladium catalyst.
- the target product can be obtained in high yield by applying reaction conditions of general coupling reactions such as Suzuki-Miyaura reaction, Negishi reaction, Tamao-Kumada reaction, Stille reaction and the like.
- Examples of the palladium catalyst that can be used in “Step 1” include salts of palladium chloride, palladium acetate, palladium trifluoroacetate, palladium nitrate, and the like. Furthermore, ⁇ -allyl palladium chloride dimer, palladium acetylacetonate, tris (dibenzylideneacetone) dipalladium, dichlorobis (triphenylphosphine) palladium, tetrakis (triphenylphosphine) palladium and dichloro (1,1′-bis (diphenylphosphine). Examples include complex compounds such as fino) ferrocene) palladium.
- a palladium complex having a tertiary phosphine as a ligand is preferable in terms of a good reaction yield, is easily available, and a palladium complex having triphenylphosphine as a ligand is particularly preferable in terms of a good reaction yield.
- the molar ratio of the palladium catalyst to the compound (6) is preferably from 1: 200 to 1: 2, and more preferably from 1:50 to 1:10 in terms of a good reaction yield.
- the palladium complex having tertiary phosphine as a ligand can also be prepared in a reaction system by adding tertiary phosphine to a palladium salt or complex compound.
- the tertiary phosphine that can be used in this case is triphenylphosphine, trimethylphosphine, tributylphosphine, tri (tert-butyl) phosphine, tricyclohexylphosphine, tert-butyldiphenylphosphine, 9,9-dimethyl-4,5.
- Triphenylphosphine is preferable because it is easily available and the reaction yield is good.
- the molar ratio of the tertiary phosphine to the palladium salt or complex compound is preferably 1:10 to 10: 1, and more preferably 1: 2 to 5: 1 from the viewpoint of good reaction yield.
- the molar ratio of the compound (6) and the compound (7) used in “Step 1” is preferably 1: 2 to 5: 1, and more preferably 1: 2 to 2: 1 in terms of a good yield.
- the yield can be improved by carrying out the reaction in the presence of a base.
- Bases that can be used in “Step 1” include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, lithium carbonate, cesium carbonate, potassium phosphate, sodium phosphate, sodium fluoride, potassium fluoride, fluorine.
- Cesium carbonate and the like can be exemplified, and cesium carbonate is preferable in terms of a good yield.
- the molar ratio of base to compound (7) is preferably 1: 2 to 10: 1 and more preferably 1: 1 to 3: 1 in terms of good yield.
- the reaction of “Step 1” can be carried out in a solvent.
- the solvent that can be used in “Step 1” include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, toluene, benzene, diethyl ether, ethanol, methanol, and xylene, and these may be used in appropriate combination. It is desirable to use toluene or tetrahydrofuran in terms of a good yield.
- “Step 1” can be performed at a temperature appropriately selected from 0 ° C. to 150 ° C., and is preferably performed at 40 ° C. to 110 ° C. in terms of good yield.
- the cyclic azine derivative (1a) of the present invention can be obtained by performing a normal treatment after completion of “Step 1”. If necessary, it may be purified by recrystallization, column chromatography or sublimation.
- the cyclic azine derivative (1a) of the present invention has the following reaction formula:
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 2 represents a substituted phenyl group or a condensed ring phenyl group not containing a group 16 element. However, Ar 2 does not contain a 1,3,5-trimethylphenyl group.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and R 1 in two B (OR 1 ) 2s may be the same or different. Two R 1 s in each B (OR 1 ) 2 may be combined to form a ring containing an oxygen atom and a boron atom.
- It can be manufactured also by the process shown by.
- Step 2 is a step in which the compound (8) is reacted with the compound (9) in the presence of a palladium catalyst and a base to obtain the cyclic azine derivative (1a) of the present invention.
- the target product can be obtained in high yield by applying reaction conditions of a general Suzuki-Miyaura reaction.
- the palladium catalyst that can be used in “Step 2” include the palladium salts and complex compounds exemplified in “Step 1”.
- a palladium complex having a tertiary phosphine as a ligand is preferable in terms of a good reaction yield, is easily available, and a palladium complex having triphenylphosphine as a ligand is particularly preferable in terms of a good reaction yield.
- the molar ratio of the palladium catalyst to the compound (8) is preferably 1: 200 to 1: 2, and more preferably 1:50 to 1:10 from the viewpoint of good reaction yield.
- a palladium complex having a tertiary phosphine as a ligand can be prepared in a reaction system by adding a tertiary phosphine to a palladium salt or a complex compound.
- the tertiary phosphine that can be used in this case include the tertiary phosphine exemplified in “Step 1”. Among them, triphenylphosphine is preferable because it is easily available and the reaction yield is good.
- the molar ratio of the tertiary phosphine to the palladium salt or complex compound is preferably 1:10 to 10: 1, and more preferably 1: 2 to 5: 1 from the viewpoint of good reaction yield.
- Step 2 must be carried out in the presence of a base.
- the base that can be used in “Step 2” include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, lithium carbonate, cesium carbonate, potassium phosphate, sodium phosphate, sodium fluoride, potassium fluoride, fluoride.
- Cesium carbonate and the like can be exemplified, and cesium carbonate is preferable in terms of a good yield.
- the molar ratio of base to compound (8) is preferably from 1: 2 to 10: 1, and more preferably from 1: 1 to 4: 1 in terms of good yield.
- the molar ratio of the compound (8) and the compound (9) used in “Step 2” is preferably 1:10 to 2: 1, and more preferably 1: 2 to 1: 4 in terms of a good yield.
- the reaction of “Step 2” can be carried out in a solvent.
- the solvent that can be used in “Step 2” include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, toluene, benzene, diethyl ether, ethanol, methanol, and xylene, and these may be used in appropriate combination. It is desirable to use a mixed solvent of toluene and water in terms of good yield.
- “Step 2” can be performed at a temperature appropriately selected from 0 ° C. to 150 ° C., and is more preferably performed at 40 ° C. to 110 ° C. in terms of a good yield.
- the cyclic azine derivative (1a) of the present invention can be obtained by performing a normal treatment after completion of “Step 2”. If necessary, it may be purified by recrystallization, column chromatography or sublimation.
- Compound (8) which is a raw material of “Step 2” for producing the cyclic azine derivative (1a) of the present invention, has, for example, the following reaction formula
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and R 1 in two B (OR 1 ) 2s may be the same or different.
- Two R 1 s in each B (OR 1 ) 2 may be combined to form a ring containing an oxygen atom and a boron atom.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- It can manufacture by the method shown by.
- Step 3 is a reaction of reacting compound (6) with a borane compound represented by general formula (16) or a diboron compound represented by general formula (17) in the presence of a base and a palladium catalyst.
- compound (8) used in 2) is produced.
- the reaction conditions disclosed in The Journal of OrganicC Chemistry, 60, 7508-7510, 1995 or Journal of Organic Chemistry, 65, 164-168, 2000 are applied.
- the target product can be obtained with good yield.
- Examples of the palladium catalyst that can be used in “Step 3” include the same palladium salts or complex compounds exemplified in “Step 1”. Among these, a palladium complex having a tertiary phosphine as a ligand is preferable in terms of a good reaction yield, is easily available, and a palladium complex having triphenylphosphine as a ligand is particularly preferable in terms of a good reaction yield. preferable.
- the molar ratio of the palladium catalyst to the compound (6) is preferably from 1: 200 to 1: 2, and more preferably from 1:50 to 1:10 in terms of a good reaction yield.
- a palladium complex having a tertiary phosphine as a ligand can be prepared in a reaction system by adding a tertiary phosphine to a palladium salt or a complex compound.
- the tertiary phosphine that can be used in this case include the tertiary phosphine exemplified in “Step 1”. Among them, triphenylphosphine is preferable because it is easily available and the reaction yield is good.
- the molar ratio of the tertiary phosphine to the palladium salt or complex compound is preferably 1:10 to 10: 1, and more preferably 1: 2 to 5: 1 from the viewpoint of good reaction yield.
- Step 3 It is essential to carry out the reaction of “Step 3” in the presence of a base.
- the base that can be used in “Step 3” include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, lithium carbonate, cesium carbonate, potassium phosphate, sodium phosphate, sodium fluoride, potassium fluoride, fluoride.
- Cesium carbonate and the like can be exemplified, and cesium carbonate is preferable in terms of a good yield.
- the molar ratio of base to compound (6) is preferably 1: 2 to 10: 1, and more preferably 2: 1 to 4: 1 in terms of good yield.
- the molar ratio of the borane compound (16) or diboron compound (17) and the compound (6) used in “Step 3” is preferably 1: 1 to 5: 1, and 2: 1 to 3 in terms of good reaction yield. : 1 is more preferred.
- the reaction of “Step 3” can be carried out in a solvent.
- the solvent that can be used in “Step 3” include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, toluene, benzene, diethyl ether, ethanol, methanol, and xylene, and these may be used in appropriate combination. It is desirable to use tetrahydrofuran in terms of a good yield.
- “Step 3” can be performed at a temperature appropriately selected from 0 ° C. to 150 ° C., and is more preferably performed at 40 ° C. to 80 ° C. in terms of a good yield.
- Compound (8) obtained in this step may be isolated after the reaction or may be subjected to “Step 2” without isolation.
- the cyclic azine derivative (1b) of the present invention has the following reaction formula:
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- Z 1 represents a carbon atom or a nitrogen atom.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- Ar 3 represents a phenyl group, a pyridyl group or a pyrimidyl group.
- X represents a phenylene group or a pyridylene group.
- p represents an integer of 0 to 2. When p is 2, X may be the same or different.
- M represents a metal group or a hetero atom group.
- Step 4" is a step of obtaining the cyclic azine derivative (1b) of the present invention by reacting the compound (10) with the compound (11) in the presence of a palladium catalyst in the presence of a base in some cases.
- the target product can be obtained in high yield by applying reaction conditions of general coupling reactions such as Suzuki-Miyaura reaction, Negishi reaction, Tamao-Kumada reaction, Stille reaction and the like.
- Examples of the palladium catalyst that can be used in “Step 4” include the same palladium salts or complex compounds exemplified in “Step 1”. Among these, a palladium complex having a tertiary phosphine as a ligand is preferable in terms of a good reaction yield, is easily available, and a palladium complex having triphenylphosphine as a ligand is particularly preferable in terms of a good reaction yield. preferable.
- a palladium complex having a tertiary phosphine as a ligand can be prepared in a reaction system by adding a tertiary phosphine to a palladium salt or a complex compound.
- a tertiary phosphine that can be used in this case include the tertiary phosphine exemplified in “Step 1”.
- Triphenylphosphine is preferable because it is easily available and the reaction yield is good.
- the molar ratio of the tertiary phosphine to the palladium salt or complex compound is preferably 1:10 to 10: 1, and more preferably 1: 2 to 5: 1 from the viewpoint of good reaction yield.
- Examples of the base that can be used in “Step 4” include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, lithium carbonate, cesium carbonate, potassium phosphate, sodium phosphate, sodium fluoride, potassium fluoride, fluoride. Cesium carbonate and the like can be exemplified, and cesium carbonate is desirable in terms of a good yield.
- the molar ratio of base to compound (11) is preferably from 1: 2 to 10: 1, and more preferably from 1: 1 to 3: 1 in terms of good yield.
- the molar ratio of the compound (10) and the compound (11) used in “Step 4” is preferably 1: 2 to 5: 1, and more preferably 1: 2 to 2: 1 in terms of a good yield.
- the solvent that can be used in “Step 4” include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, toluene, benzene, diethyl ether, ethanol, methanol, and xylene, and these may be used in appropriate combination. It is desirable to use a mixed solvent of toluene and ethanol in terms of good yield.
- “Step 4” can be performed at a temperature appropriately selected from 0 ° C. to 150 ° C., and is more preferably performed at 40 ° C. to 80 ° C. in terms of a good yield.
- the cyclic azine derivative (1b) of the present invention can be obtained by performing a normal treatment after completion of “Step 4”. If necessary, it may be purified by recrystallization, column chromatography or sublimation.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- Z 1 represents a carbon atom or a nitrogen atom.
- Y 1 and Y 2 represent a chlorine atom, a bromine atom or an iodine atom.
- M represents a metal group or a hetero atom group.
- Step 5 the compound (18) is reacted with the compound (19) in the presence of a palladium catalyst, optionally in the presence of a base, and the compound (10) used for the production of the cyclic azine derivative (1b) of the present invention ).
- the target product can be obtained in high yield by applying reaction conditions of general coupling reactions such as Suzuki-Miyaura reaction, Negishi reaction, Tamao-Kumada reaction, Stille reaction and the like.
- Examples of the palladium catalyst that can be used in “Step 5” include the same palladium salts or complex compounds exemplified in “Step 1”.
- a palladium complex having a tertiary phosphine as a ligand is more preferable in terms of a good reaction yield, and a palladium complex having a triphenylphosphine as a ligand is easily available and has a good reaction yield. Particularly preferred.
- a palladium complex having a tertiary phosphine as a ligand can also be prepared in a reaction system by adding a tertiary phosphine to a palladium salt or a complex compound.
- a tertiary phosphine that can be used at this time include the same tertiary phosphines as exemplified in “Step 1”.
- Triphenylphosphine is preferable because it is easily available and the reaction yield is good.
- the molar ratio of the tertiary phosphine to the palladium salt or complex compound is preferably 1:10 to 10: 1, and more preferably 1: 2 to 5: 1 from the viewpoint of good reaction yield.
- the same bases as those exemplified in “Step 1” can be exemplified, and potassium carbonate is preferable in terms of a good yield.
- the molar ratio of base to compound (19) is preferably 1: 1 to 10: 1, and more preferably 2: 1 to 3: 1 in terms of good yield.
- the molar ratio of the compound (18) and the compound (19) used in “Step 5” is preferably 1: 2 to 5: 1, and more preferably 1: 2 to 2: 1 in terms of a good yield.
- the solvent that can be used in “Step 5” include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, toluene, benzene, diethyl ether, ethanol, methanol, and xylene, and these may be used in appropriate combination. It is desirable to use a mixed solvent of toluene and ethanol in terms of good yield.
- Step 5 can be performed at a temperature appropriately selected from 0 ° C. to 150 ° C., and is more preferably performed at 40 ° C. to 80 ° C. in terms of a good yield.
- Compound (10) can be obtained by carrying out a normal treatment after completion of “Step 5”. If necessary, it may be purified by recrystallization, column chromatography, sublimation or the like, but it can also be subjected to “Step 4” without isolation.
- the cyclic azine derivative (1c) of the present invention can be produced by a method represented by the following reaction formula.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Z 2 represents a carbon atom or a nitrogen atom.
- R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and R 1 in two B (OR 1 ) 2s may be the same or different. Two R 1 s in each B (OR 1 ) 2 may be combined to form a ring containing an oxygen atom and a boron atom.
- Ar 5 and Ar 6 represent a phenyl group or a pyridyl group.
- Z 3 represents a carbon atom or a nitrogen atom. However, when Z 3 is a carbon atom, Ar 5 and Ar 6 cannot simultaneously be a phenyl group.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom. ]
- Compound (13) is disclosed in, for example, Dalton Trans. , 4659-4665, 2007, or Japanese Patent Application Laid-Open No. 2002-363161, or the method shown in Experimental Example-42 or 43.
- the compound (13) the following 13-1 to 13-19 [wherein Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- the present invention is not limited to this.
- Step 6 is a step for producing the cyclic azine derivative (1c) of the present invention by reacting compound (12) with compound (13) in the presence of a base and a palladium catalyst.
- the target product can be obtained in high yield by applying reaction conditions of a general Suzuki-Miyaura reaction.
- the palladium catalyst that can be used in “Step 6” include the same palladium salts or complex compounds exemplified in “Step 1”. Among these, a palladium complex having a tertiary phosphine as a ligand is preferable in terms of a good yield.
- a palladium complex having triphenylphosphine as a ligand is more preferable in terms of easy availability and good yield.
- the amount of the palladium catalyst used in “Step 6” is not particularly limited as long as it is a so-called catalyst amount. However, the molar ratio of the palladium catalyst to the compound (12) is 1:50 to 1: 10 is preferred.
- these palladium complexes having a tertiary phosphine as a ligand can also be prepared in a reaction system by adding a tertiary phosphine to a palladium salt or complex compound.
- a tertiary phosphine that can be used at this time include the same tertiary phosphines as exemplified in “Step 1”.
- Triphenylphosphine is preferred because it is readily available and yields are good.
- the molar ratio of the tertiary phosphine to the palladium salt or complex compound is preferably 1:10 to 10: 1, and more preferably 1: 2 to 5: 1 in terms of a good yield.
- Bases that can be used include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, lithium carbonate, cesium carbonate, potassium acetate, sodium acetate, potassium phosphate, sodium phosphate, sodium fluoride, potassium fluoride, Examples thereof include cesium fluoride, and sodium carbonate is preferable in terms of a good yield.
- the molar ratio of the base and the compound (12) is not particularly limited, but is preferably 1: 2 to 10: 1, and more preferably 1: 1 to 3: 1 in terms of a good yield.
- the molar ratio of the compound (13) and the compound (12) used in “Step 6” is not particularly limited, but is preferably 1: 1 to 5: 1 and 2: 1 to 3: 1 in terms of good yield. Further preferred.
- the reaction of “Step 6” can be carried out in a solvent.
- the solvent that can be used include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, toluene, benzene, diethyl ether, ethanol, methanol, and xylene, and these may be used in appropriate combination. It is desirable to use a mixed solvent of toluene and water in terms of good yield.
- the cyclic azine derivative (1c) of the present invention can be obtained by performing a normal treatment after completion of “Step 6”. If necessary, it may be purified by recrystallization, column chromatography or sublimation.
- Compound (12) which is a raw material of “Step 6” for producing the cyclic azine derivative (1c) of the present invention, is produced by the method shown in the following reaction formula, for example, as shown in Experimental Examples-34 to 36. be able to.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- Z 2 represents a carbon atom or a nitrogen atom.
- R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and R 1 in two B (OR 1 ) 2s may be the same or different.
- Two R 1 s in each B (OR 1 ) 2 may be combined to form a ring containing an oxygen atom and a boron atom.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- Compound (20) can be produced, for example, by the method shown in Experimental Examples 37 to 42.
- Step 7 Compound (12) used in “Step 6” is produced by reacting Compound (20) with borane compound (16) or diboron compound (17) in the presence of a base and a palladium catalyst. It is a process. In this step, for example, the reaction conditions disclosed in The Journal of Organic Chemistry, 60, 7508-7510, 1995 or Journal of Organic Chemistry, 65, 164-168, 2000 are applied. The object can be obtained efficiently.
- Examples of the palladium catalyst that can be used in “Step 7” include the same palladium salts or complex compounds exemplified in “Step 1”. Among these, a palladium complex having a tertiary phosphine as a ligand is preferable in terms of a good yield. A palladium complex having triphenylphosphine as a ligand is particularly preferable because it is easily available and yield is good.
- the amount of the palladium catalyst used in “Step 7” is not particularly limited as long as it is a so-called catalyst amount. However, the molar ratio of the palladium catalyst to the compound (20) is 1:50 to 1: 10 is preferred.
- a palladium complex having tertiary phosphine as a ligand can also be prepared in a reaction system by adding tertiary phosphine to a palladium salt or complex compound.
- the tertiary phosphine the tertiary phosphine exemplified in “Step 1” can be exemplified. Among them, triphenylphosphine is preferable because it is easily available.
- the molar ratio of the tertiary phosphine and the palladium salt or complex compound used in “Step 7” is not particularly limited, but is preferably 1:10 to 10: 1, and 1: 2 to 5: 1 in terms of good yield. Is more preferable.
- Bases that can be used include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, lithium carbonate, cesium carbonate, potassium acetate, sodium acetate, potassium phosphate, sodium phosphate, sodium fluoride, potassium fluoride, Cesium fluoride and the like can be exemplified, and potassium acetate is desirable in terms of a good yield.
- the molar ratio of the base and the compound (20) is not particularly limited, but is preferably 1: 2 to 10: 1, and more preferably 1: 1 to 3: 1 in terms of a good yield.
- the molar ratio of the borane compound (16) or diboron compound (17) and the compound (20) used in “Step 2” is not particularly limited, but is preferably 1: 1 to 5: 1 and is 2 in terms of good yield. 1 to 3: 1 is more preferable.
- the reaction of “Step 7” can be carried out in a solvent.
- the solvent that can be used include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, 1,4-dioxane, toluene, benzene, diethyl ether, ethanol, methanol, and xylene, and these may be used in appropriate combination. It is desirable to use tetrahydrofuran or 1,4-dioxane in terms of a good yield.
- the compound (12) obtained in this step may be isolated after the reaction or may be subjected to “Step 6” without isolation.
- cyclic azine derivative (1d) of the present invention can be produced by a method represented by the following reaction formula.
- Ar 1 represents an aromatic group which may be substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl group or a pyridyl group.
- R 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and R 1 in two B (OR 1 ) 2s may be the same or different.
- Two R 1 s in each B (OR 1 ) 2 may be combined to form a ring containing an oxygen atom and a boron atom.
- Ar 4 represents an aromatic hydrocarbon group having 2 to 4 rings which may be substituted.
- Y 1 represents a chlorine atom, a bromine atom or an iodine atom.
- Preferable examples of the compound represented by the general formula (15) include the following basic skeletons 15-1 to 15-15, but the present invention is not limited thereto.
- Step 8 is a step of producing the cyclic azine derivative (1d) of the present invention by reacting the compound (14) with the compound (15) in the presence of a base and a palladium catalyst.
- the target product can be obtained in good yield by applying the general reaction conditions of Suzuki-Miyaura reaction.
- Examples of the palladium catalyst that can be used in “Step 8” include the palladium catalyst exemplified in “Step 1”. Palladium chloride, palladium acetate, tris (dibenzylideneacetone) dipalladium, dichlorobis (triphenylphosphine) palladium, and tetrakis (triphenylphosphine) palladium are preferred because they are easily available and yields are good.
- These palladium catalysts can be prepared in a reaction system by adding a tertiary phosphine to a palladium salt or a complex compound.
- a tertiary phosphine that can be added to the palladium salt or the complex compound
- the tertiary phosphine exemplified in “Step 1” can be exemplified, but triphenylphosphine is easily available and has a good yield.
- Tri (tert-butyl) phosphine, 2- (di-tert-butylphosphino) biphenyl and 2-dicyclohexylphosphino-2 ′, 4 ′, 6′-triisopropylbiphenyl are preferred.
- the molar ratio of the palladium catalyst to the compound (6) is preferably 1: 200 to 1: 2, and more preferably 1: 100 to 1:10 in terms of a good yield.
- the molar ratio of the tertiary phosphine to the palladium catalyst is preferably 1:10 to 10: 1, and more preferably 1: 2 to 5: 1 in terms of a good yield.
- Examples of the base that can be used in “Step 8” include the bases exemplified in “Step 1”, but sodium hydroxide is particularly preferable in terms of a good yield.
- the molar ratio of base to compound (6) is preferably 1: 2 to 10: 1, and more preferably 1: 1 to 3: 1 in terms of good yield.
- the molar ratio of the compound (15) and the compound (14) used in “Step 8” is preferably 2: 1 to 5: 1, and more preferably 2: 1 to 3: 1 in terms of a good yield.
- Step 8 examples of the solvent that can be used in “Step 8” include water, dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, toluene, benzene, diethyl ether, and xylene, and these may be used in appropriate combination. It is desirable to use tetrahydrofuran in terms of a good yield.
- the reaction of “Step 8” can be carried out at a temperature appropriately selected from 0 ° C. to 150 ° C., and more preferably from 50 ° C. to 80 ° C. in terms of good yield.
- the cyclic azine derivative (1d) of the present invention can be obtained by performing ordinary treatment after completion of “Step 8”. You may refine
- the compound (14) which is a raw material of “Step 8” for producing the cyclic azine derivative (1d) of the present invention can be synthesized according to the method shown in “Step 7”.
- a desired thin film can be formed by a vacuum deposition method, a spin coating method, an ink jet method, a casting method, a dipping method, or the like.
- a vacuum deposition method a spin coating method, an ink jet method, a casting method, a dipping method, or the like.
- the film formation by the vacuum evaporation method can be performed by using a general-purpose vacuum evaporation apparatus.
- the vacuum degree of the vacuum chamber when forming a film by the vacuum deposition method is determined by taking into account the manufacturing tact time and manufacturing cost of manufacturing the organic electroluminescence device, and commonly used diffusion pumps, turbo molecular pumps, cryopumps, etc.
- the deposition rate is preferably 0.005 to 1.0 nm / sec depending on the thickness of the film to be formed.
- a spin coating method using a general-purpose apparatus Film formation by an inkjet method, a cast method, a dip method, or the like is also possible.
- 6-bromoquinoline (0.34 g, 1.62 mmol was dissolved in tetrahydrofuran (7 mL), and a hexane solution (1.03 mL) containing butyllithium (1.63 mmol) was added dropwise at ⁇ 78 ° C.
- dichloro (tetramethylethylenediamine) zinc (0.41 g, 1.63 mmol) was added, and the mixture was warmed to room temperature and stirred for 1 hour.
- 9-phenanthreneboronic acid (1.91 g, 8.56 mmol), 2- (3,5-dibromophenyl) -4,6-diphenyl-1,3,5-triazine (4.00 g, 8. 56 mmol) and tetrakis (triphenylphosphine) palladium (98.9 mg, 0.086 mmol) were suspended in a mixed solvent of toluene (320 mL) and ethanol (40 mL), and the temperature was raised to 60 ° C. To this, 1M aqueous K 2 CO 3 solution (25.7 mL, 25.7 mmol) was slowly added dropwise, followed by stirring for 4 hours.
- a 1M aqueous K 2 CO 3 solution (9.63 mL, 9.63 mmol) was slowly added dropwise thereto, followed by stirring for 3 hours.
- 4- (2-pyridyl) phenylboronic acid (0.96 g, 4.82 mmol) and 1M K 2 CO 3 (6.42 mL, 6.42 mmol) were added, and the temperature was raised to 60 ° C. And stirred for 17 hours.
- the reaction mixture was cooled to room temperature, low-boiling components were distilled off under reduced pressure, methanol was added, and the precipitated solid was filtered off.
- a white solid (yield 0.68 g, 33% yield) of -yl] -4,6-diphenyl-1,3,5-triazine was obtained.
- 1-pyreneboronic acid (0.53 g, 2.14 mmol)
- 2- (3,5-dibromophenyl) -4,6-diphenyl-1,3,5-triazine (1.00 g, 2.14 mmol)
- Tetrakis (triphenylphosphine) palladium (24.7 mg, 0.0214 mmol) was suspended in a mixed solvent of toluene (80 mL) and ethanol (10 mL), and the temperature was raised to 60 ° C.
- a 1M aqueous K 2 CO 3 solution (8.56 mL, 8.56 mmol) was slowly added dropwise thereto, followed by stirring for 3 hours.
- 9-phenanthreneboronic acid (0.43 g, 1.93 mmol)
- 2- (3,5-dibromophenyl) -4,6-diphenyl-1,3,5-triazine (0.90 g, 1. 93 mmol)
- tetrakis (triphenylphosphine) palladium (22.3 mg, 0.0193 mmol)
- toluene 75 mL
- ethanol 10 mL
- a 1M aqueous K 2 CO 3 solution (5.78 mL, 5.78 mmol) was slowly added dropwise thereto, followed by stirring for 7 hours.
- Phenyl] -1,3,5-triazine-containing mixture (0.50 g), 6-bromo-2,2′bipyridine (288 mg, 1.22 mmol), tetrakis (triphenylphosphine) palladium (47.3 mg,. 0409 mmol) was suspended in toluene (25 mL). 2M Na 2 CO 3 aqueous solution (10 mL, 20 mmol) was added thereto, and the mixture was stirred at 90 ° C. for 15 hours. After cooling the reaction mixture to room temperature, the organic layer was distilled off under reduced pressure to obtain a crude product.
- 9-phenanthreneboronic acid (5.00 g, 10.7 mmol), 2- (3,5-dibromophenyl) -4,6-diphenyl-1,3,5-triazine (2.38 g, 10. 7 mmol) and tetrakis (triphenylphosphine) palladium (124 mg, 0.107 mmol) were suspended in a mixed solvent of toluene (400 mL) and ethanol (50 mL), and the temperature was raised to 50 ° C. A 1M aqueous K 2 CO 3 solution (32.1 mL, 32.1 mmol) was slowly added dropwise thereto, followed by stirring for 3 hours.
- 9,9-dimethyl-2-benzo [c] fluoreneboronic acid (185 mg, 0.644 mmol), 2- (3,5-dibromophenyl) -4,6-diphenyl-1,3,5- Triazine (300 mg, 0.644 mmol) and tetrakis (triphenylphosphine) palladium (7.44 mg, 0.00644 mmol) were suspended in a mixed solvent of toluene (24 mL) and ethanol (3 mL), and the temperature was raised to 50 ° C.
- a 1M aqueous K 2 CO 3 solution (1.93 mL, 1.93 mmol) was slowly added dropwise thereto, and the mixture was stirred for 3 hours, heated to 80 ° C., and further stirred for 3 hours.
- 4- (2-pyridyl) phenylboronic acid 256 mg, 1.29 mmol
- 1M K 2 CO 3 2.90 mL, 2.90 mmol
- the reaction mixture was cooled to room temperature, low-boiling components were distilled off under reduced pressure, methanol was added, and the precipitated solid was filtered off.
- 9-phenanthreneboronic acid 0.538 g, 2.42 mmol
- 2- (3,5-dibromophenyl) -4,6-di-p-tolyl-1,3,5-triazine (1. 20 g, 2.42 mmol)
- tetrakis (triphenylphosphine) palladium 28.0 mg, 0.0242 mmol
- toluene 90 mL
- ethanol 10 mL
- Example 33 2- ⁇ 4,4 ′′ -bis (2-pyridyl)-[1,1 ′: 3 ′, 1 ′′]-terphenyl-5′-yl ⁇ -4,6-di-p-tolyl-1 , 3,5-triazine Tg measurement
- reaction mixture was cooled to room temperature, low-boiling components were removed under reduced pressure, and the resulting crude product was purified by silica gel chromatography (developing solvent / chloroform), washed with hexane, and then 4,6-bis (4 -Tert-butylphenyl) -2- [3,5-bis (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl] -1,3,5-triazine A yellow solid (yield 170 mg, 75% yield) was obtained.
- the milky white suspension was stirred at room temperature for 1 hour, then heated to 140 ° C., and the organic solvent (70 mL) and water (30 mL) were distilled off.
- the reaction mixture was allowed to cool and then filtered, and the resulting solid was suspended in chlorobenzene (100 mL).
- the suspension was heated at 130 ° C. and insoluble materials were removed by filtration.
- the same extraction operation was repeated three more times using chlorobenzene (100 mL). After allowing to cool, the filtrates were combined and methanol (400 mL) was added.
- the obtained red solid was pulverized in an argon stream and added to a 28% aqueous ammonia solution cooled to 0 ° C. The resulting suspension was stirred for an additional hour at room temperature. The precipitated solid was collected by filtration and washed successively with water and then with methanol. The solid was dried and extracted with a Soxhlet extractor (extraction solvent: chloroform). The extract was allowed to cool, and the precipitated solid was collected by filtration and dried to give a white powder of 4,6-bis (3-biphenylyl) -2- (3,5-dibromophenyl) -1,3,5-triazine ( Yield 2.80 g, yield 32%) was obtained.
- phenylboronic acid (3.80 g), 2- (3,5-dibromophenyl) pyridine (8.15 g), tetrakis (triphenylphosphine) palladium (1.20 g) were added with 2M aqueous sodium carbonate solution ( 26 mL), ethanol (26 mL), and toluene (52 mL), and the mixture was refluxed for 22 hours. After cooling the reaction mixture to room temperature, low-boiling components were distilled off under reduced pressure, and then water and chloroform were added.
- reaction mixture is cooled to room temperature, low-boiling components are removed under reduced pressure, and the resulting crude product is purified by silica gel chromatography (developing solvent / chloroform), washed with hexane, and the target 2- [3- A yellow solid (yield 1.55 g, yield 99%) of (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) biphenyl-5-yl] pyridine was obtained.
- the crude product obtained was purified by alumina chromatography (developing solvent / chloroform) to obtain the desired 4,6-bis (3-biphenylyl) -2- [3,5- Scan (2,2 ': 6', 2 "- terpyridine-4'-yl) phenyl] -1,3,5-triazine as a white solid (yield 110 mg, 85% yield).
- the crude product obtained was purified by alumina chromatography (developing solvent / chloroform) to obtain the desired 4,6-bis (4-biphenylyl) -2- [3,5- Scan (2,2 ': 6', 2 "- terpyridine-4'-yl) phenyl] -1,3,5-triazine as a white solid (yield 80.0 mg, 62% yield).
- the obtained crude product was purified by silica gel column chromatography (developing solvent / chloroform) to obtain the desired 4,6-diphenyl-2- [3,5,3 ′′, 5 ′′ -tetra (2-pyridyl) -1 , 1 ′; 3 ′, 1 ′′ -terphenyl-5′-yl] -1,3,5-triazine was obtained as a white solid (yield 2.10 g, yield 64%).
- 1-pyreneboronic acid (1.26 g, 5.13 mmol)
- 2- (3,5-dibromophenyl) -4,6-diphenyl-1,3,5-triazine (1.00 g, 2.14 mmol)
- Dichlorobis (triphenylphosphine) palladium (60.1 mg, 0.081 mmol) was suspended in tetrahydrofuran (75 mL), and the temperature was raised to 70 ° C.
- a 4N aqueous NaOH solution (4.01 mL, 16.1 mmol) was slowly added dropwise thereto, and the mixture was refluxed for 3 hours.
- 9-phenanthreneboronic acid (0.11 g, 0.50 mmol) was added and refluxed for 2 hours. After cooling to room temperature, low-boiling components were distilled off under reduced pressure, methanol was added, and the precipitated solid was filtered off. The obtained crude product was recrystallized from o-xylene, and the target 2- [3,5-di (9-phenanthryl) phenyl] -4,6-di-p-tolyl-1,3,5 was obtained. A gray solid of triazine (yield 0.74 g, yield 44%) was obtained.
- 9-phenanthreneboronic acid 0.52 g, 2.36 mmol
- 2- (3-bromo-5-chlorophenyl) -4,6-diphenyl-1,3,5-triazine (0.91 g, 2 .15 mmol)
- tetrakis (triphenylphosphine) palladium 24.8 mg, 0.022 mmol
- toluene 80 mL
- ethanol 10 mL
- Test example-1 As the substrate, a glass substrate with an ITO transparent electrode in which an indium-tin oxide (ITO) film having a width of 2 mm was patterned in a stripe shape was used.
- the substrate was cleaned with isopropyl alcohol and then surface treated by ozone ultraviolet cleaning.
- Each layer was vacuum-deposited on the cleaned substrate by a vacuum deposition method, and an organic electroluminescence device having a light-emitting area of 4 mm 2 as shown in FIG.
- the glass substrate was introduced into a vacuum evaporation tank, and the pressure was reduced to 1.0 ⁇ 10 ⁇ 4 Pa.
- a hole injection layer 2 a hole transport layer 3, a light emitting layer 4 and an electron transport layer 5 are sequentially formed as an organic compound layer on the glass substrate shown in FIG. 1, and then a cathode layer 6 is formed.
- a hole injection layer 2 sublimation-purified phthalocyanine copper (II) was vacuum-deposited with a film thickness of 25 nm.
- the light emitting layer 4 includes 4,4′-bis (2,2-diphenylethen-1-yl) diphenyl (DPVBi) and 4,4′-bis [4- (di-p-tolylamino) phenylethene-1- [Il] biphenyl (DPAVBi) was vacuum-deposited at a thickness of 97 nm and a thickness of 40 nm.
- DPVBi 4,4′-bis (2,2-diphenylethen-1-yl) diphenyl
- DPAVBi 4,4′-bis [4- (di-p-tolylamino) phenylethene-1- [Il] biphenyl
- 2- [4,4 ′′ -di (2-pyridyl) -1,1 ′: 3 ′, 1 ′′ -terphenyl-5′-yl] -4 synthesized in Experimental Example-1 was used.
- 6-Diphenylpyrimidine was vacuum-deposited with a thickness of 20 nm
- Each organic material was formed into a film by a resistance heating method, and the heated compound was vacuum-deposited at a film formation rate of 0.3 nm / second to 0.5 nm / second. Finally, a metal mask was disposed so as to be orthogonal to the ITO stripe, and the cathode layer 6 was formed.
- the cathode layer 6 was made into a two-layer structure by vacuum-depositing lithium fluoride and aluminum with thicknesses of 0.5 nm and 100 nm, respectively. Each film thickness was measured with a stylus type film thickness meter (DEKTAK). Furthermore, this element was sealed in a nitrogen atmosphere glove box having an oxygen and moisture concentration of 1 ppm or less. For the sealing, a glass sealing cap and the above-described film-forming substrate epoxy type ultraviolet curable resin (manufactured by Nagase ChemteX Corporation) were used.
- a direct current was applied to the produced organic electroluminescence device, and the light emission characteristics were evaluated using a luminance meter of LUMINANCE METER (BM-9) manufactured by TOPCON.
- V voltage
- cd / m 2 luminance
- cd / A current efficiency
- lm / W power efficiency
- the measured value of the produced blue fluorescent element was 5.8 V, 2160 cd / m 2 , 10.8 cd / A, 5.9 lm / W.
- the luminance half time of this element was 171 hours.
- Test Example-2 instead of the light emitting layer 4 of Test Example 1, an organic electroluminescent device in which Alq (tris (8-quinolinolato) aluminum (III)) was vacuum-deposited with a film thickness of 40 nm was produced in the same manner as Test Example 1.
- the measured value of the produced green fluorescent element was 5.1 V, 958 cd / m 2 , 4.8 cd / A, 2.9 lm / W.
- the luminance half time of this device was 1618 hours.
- Test Example-3 Under the device preparation conditions of Test Example 1, as the hole injection layer 2, sublimated and purified phthalocyanine copper (II) was vacuum-deposited with a thickness of 10 nm. As the hole transport layer 3, N, N′-di (naphthylene-1-yl) -N, N′-diphenylbenzidine (NPD) was vacuum-deposited with a film thickness of 30 nm. 4,4′-bis (carbazol-9-yl) biphenyl (CBP) is used as the host material of the light-emitting layer 4, and tris (2-phenylpyridine) iridium (III) (Ir (ppy) 3) is used as the dopant.
- the film was co-deposited to a thickness of 30 nm using a dope concentration of 6%.
- 2- [4,4 ′′ -di (2-pyridyl) -1,1 ′: 3 ′, 1 ′′ -terphenyl-5′-yl] -4,6-diphenyl of the present invention is used.
- Pyrimidine was vacuum deposited with a film thickness of 50 nm.
- the measured values of the produced green phosphorescent element were 7.5 V, 6610 cd / m 2 , 33.5 cd / A, and 13.9 lm / W.
- the luminance half time of this device was 230 hours.
- Test Example-4 instead of the electron transport layer 5 of Test Example 1, 2- [3,3 ′′ -di (2-pyridyl) -1,1 ′: 3 ′, 1 ′′ -terphenyl-5′-yl] -4, An organic electroluminescent device in which 6-diphenylpyrimidine was vacuum-deposited with a thickness of 20 nm was produced in the same manner as in Test Example-1.
- the measured value of the produced blue fluorescent element was 6.3 V, 2110 cd / m 2 , 10.6 cd / A, 5.3 lm / W.
- the luminance half time of this device was 165 hours.
- Device comparison example-1 Instead of the electron transport layer 5 in Test Example 1, an organic electroluminescent device in which Alq was vacuum-deposited with a film thickness of 20 nm was produced in the same manner as in Test Example-1.
- the measured values of the produced blue fluorescent element were 7.1 V, 1883 cd / m 2 , 9.4 cd / A, and 4.2 lm / W.
- the luminance half time of this device was 163 hours.
- Device comparison example-2 Instead of the electron transport layer 5 in Test Example 2, an organic electroluminescent device in which Alq was vacuum-deposited with a film thickness of 20 nm was produced in the same manner as in Test Example-2.
- the measured value of the produced green fluorescent element was 5.6 V, 957 cd / m 2 , 4.8 cd / A, 2.6 lm / W.
- the luminance half time of this device was 1318 hours.
- Test example-5 instead of the electron transport layer 5 of Test Example 1, 2- [5- (9-phenanthryl) -4 ′-(2-pyridyl) biphenyl-3-yl] -4,6 obtained in Test Example-15
- An organic electroluminescent device in which diphenyl-1,3,5-triazine was vacuum-deposited with a thickness of 20 nm was prepared in the same manner as in Test Example-1.
- the measured values of the fabricated element were 5.3 V and 10.5 cd / A.
- the luminance half time of this element was 155 hours.
- Test Example-6 An organic electroluminescent device was produced in the same manner as in Test Example-5 except that the light emitting layer 4 of Test Example-5 was changed to Alq 3 having a thickness of 40 nm.
- the voltage when the current density was 20 mA / cm 2 was 5.2 V, and the current efficiency was 2.5 cd / A.
- the luminance half time of this device was 2015 hours.
- Test Example-7 An organic electroluminescent device was produced in the same manner as in Test Example-5 except that the electron transport layer 5 of Test Example-5 was changed to Alq 3 having a thickness of 20 nm.
- the voltage when the current density was 20 mA / cm 2 was 6.9 V, and the current efficiency was 6.1 cd / A.
- the luminance half time of this device was 53 hours.
- Test Example-8 An organic electroluminescent element was produced in the same manner as in Test Example-6 except that the electron transport layer 5 of Test Example-6 was changed to Alq 3 having a thickness of 20 nm.
- the voltage when the current density was 20 mA / cm 2 was 5.4 V, and the current efficiency was 4.3 cd / A.
- the luminance half time of this device was 1785 hours.
- Test example-9 The electron transport layer 5 of Test Example 5 was formed from 4,6-diphenyl-2- [5- (1-naphthyl) -4 ′-(2-pyridyl) biphenyl-3-yl] -1,3, having a thickness of 20 nm.
- An organic electroluminescent device was produced in the same manner as in Test Example-5 except that 5-triazine was used.
- the optical characteristics the voltage when the current density was 20 mA / cm 2 was 6.0 V and the current efficiency was 11.1 cd / A. The luminance half time of this element was 113 hours.
- Test example-10 Except that the electron transport layer 5 of Test Example 5 was changed to 2- [5- (9-phenanthryl) -3 ′-(3-pyridyl) biphenyl-3-yl] -1,3,5-triazine having a thickness of 20 nm. Produced an organic electroluminescent device in the same manner as in Test Example-5. As for the optical characteristics, the voltage when the current density was 20 mA / cm 2 was 6.1 V, and the current efficiency was 11.5 cd / A. The luminance half time of this element was 117 hours.
- Test Example-11 The electron transport layer 5 of Test Example 5 was formed to 2- [3- (2,2′-bipyridin-6-yl) -5- (9-phenanthryl) phenyl] -4,6-diphenyl-1, An organic electroluminescent element was produced in the same manner as in Test Example-5 except that 3,5-triazine was used.
- the optical characteristics the voltage when the current density was 20 mA / cm 2 was 5.3 V, and the current efficiency was 8.0 cd / A.
- Test Example-12 The electron transport layer 5 of Test Example 5 was formed into 4,6-diphenyl-2- [5- (9-phenanthryl) -3 ′-(2-pyridyl) biphenyl-3-yl] -1,3, having a thickness of 20 nm.
- An organic electroluminescent device was produced in the same manner as in Test Example-5 except that 5-triazine was used.
- the optical characteristics the voltage when the current density was 20 mA / cm 2 was 6.6 V, and the current efficiency was 9.7 cd / A.
- Test Example-13 In Test Example-5, the hole injection layer 2 was 10 nm of phthalocyanine copper (II), and the hole transport layer 3 was 30 nm of N, N′-bis (1-naphthyl) -N, N′-diphenyl-4,4 '-Biphenyl (NPD), the light-emitting layer 4 is converted into 4,4'-bis (9H-carbazol-9-yl) biphenyl (CBP) and tris (2-phenylpyridinato) iridium (III) (Ir (PPy) 3 ) In the ratio of 94: 6 wt%, and the electron transport layer 5 is 5 nm of bis (2-methyl-8-quinolinolate) -4- (phenylphenolate) aluminum (BAlq) and 45 nm of 2- [5- ( A layer in which 9,9-dimethylfluoren-2-yl) -4 ′-(2-pyridyl) biphenyl-3-yl]
- an organic electroluminescent element was produced in the same manner as in Test Example 5, and the optical characteristics were evaluated.
- the optical characteristics the voltage when the current density was 20 mA / cm 2 was 7.7 V, and the current efficiency was 29.2 cd / A.
- Test Example-14 In Test Example 9, the same procedure as in Test Example 13 except that the electron transport layer 5 was changed to 5 nm of bis (2-methyl-8-quinolinolate) -4- (phenylphenolate) aluminum (BAlq) and 45 nm of Alq 3 .
- the organic electroluminescent element was produced by the method and the optical characteristics were evaluated. As for the optical characteristics, when the current density was 20 mA / cm 2 , the voltage was 9.0 V and the current efficiency was 26.7 cd / A.
- Test Example-15 instead of the electron transport layer 5 in Test Example 1, 2- [3,5-bis (2,2 ′: 6 ′, 2 ′′ -terpyridin-4′-yl) phenyl]-synthesized in Experimental Example-44
- An organic electroluminescent device in which 4,6-diphenyl-1,3,5-triazine was vacuum-deposited with a thickness of 20 nm was produced in the same manner as in Test Example-1.
- the measured values of the fabricated element were 5.5 V, 2230 cd / m 2 , 11.2 cd / A, and 6.4 lm / W.
- the luminance half time of this element was 113 hours.
- Test Example-16 As in Test Example-15, a hole injection layer 2, a hole transport layer 3, a light emitting layer 4 and an electron transport layer 5 were sequentially formed as an organic compound layer on the glass substrate shown by 1 in FIG. An organic electroluminescent element having a cathode layer 6 formed thereon was produced.
- As the hole injection layer 2 sublimation-purified phthalocyanine copper (II) was vacuum-deposited with a thickness of 10 nm.
- As the hole transport layer 3 N, N′-di (1-naphthyl) -N, N′-diphenylbenzidine (NPD) was vacuum-deposited with a thickness of 30 nm.
- Test Example-17 instead of the electron transport layer 5 of Test Example-15, an organic electroluminescent device in which Alq, which is a general-purpose electron transport material, was vacuum-deposited with a film thickness of 20 nm was produced in the same manner as Test Example-15.
- the measured values of the fabricated element were 7.2 V, 1859 cd / m 2 , 9.3 cd / A, and 4.0 lm / W.
- the luminance half time of this device was 83 hours.
- Test Example-18 instead of the electron transport layer 5 of Test Example-16, an organic electroluminescent element obtained by vacuum-depositing Alq, which is a general-purpose electron transport material, with a film thickness of 50 nm was produced in the same manner as Test Example-16.
- the measured values of the fabricated element were 10.4 V, 3450 cd / m 2 , 17.3 cd / A, and 5.2 lm / W.
- the luminance half time of this device was 108 hours.
- a method for manufacturing a mobility element will be described.
- a glass substrate with an ITO transparent electrode in which an ITO (indium tin oxide) film having a width of 2 mm was patterned in a stripe shape was used as the substrate.
- the substrate was cleaned with isopropyl alcohol and then surface treated by ozone ultraviolet cleaning.
- An organic material whose mobility is measured by vacuum deposition was vacuum deposited on the cleaned substrate, and a mobility measuring element was produced. Details are described below.
- the mobility of the charge transport material can be measured by any method, but this time, a time-of-flight mobility measurement method, which is a general measurement method, was used.
- the mobility measuring apparatus manufactured by Optel Co., Ltd. was used. The measurement was performed at room temperature, and the mobility was determined from the moving speed of the charge generated when the nitrogen laser was irradiated from the ITO transparent electrode side to the Al electrode.
- the mobility of 2- [3,5-di (1-pyrenyl) phenyl] -4,6-diphenyl-1,3,5-triazine is 7.6 ⁇ 10 ⁇ 5 cm 2 / V ⁇ SEC. there were. This value was higher than 1 ⁇ 10 ⁇ 6 cm 2 / V ⁇ SEC of hydroxyquinoline aluminum complex (Alq), which is a general electron transport material described in JP-A No. 2002-158091.
- Alq hydroxyquinoline aluminum complex
- Test Example-20 The mobility of 2- [3,5-di (9-phenanthryl) phenyl] -4,6-di-p-tolyl-1,3,5-triazine was measured in the same manner as in Test Example-19. It was. The mobility was 2.4 ⁇ 10 ⁇ 5 cm 2 / V ⁇ SEC.
- Test Example-21 The mobility of 2- [3,5-di (1-pyrenyl) phenyl] -4,6-di-p-tolyl-1,3,5-triazine was measured in the same manner as in Test Example-19. It was. The mobility was 6.0 ⁇ 10 ⁇ 5 cm 2 / V ⁇ SEC.
- Test Example-22 The mobility of 2- [3,5-di (9-anthryl) phenyl] -4,6-diphenyl-1,3,5-triazine was measured in the same manner as in Test Example-19. The mobility was 2.9 ⁇ 10 ⁇ 4 cm 2 / V ⁇ SEC.
- Test Example-23 The cyclic azine derivative of the present invention is an azine derivative A described in JP-A-2008-280330. It was also high compared with the melting point and Tg of. Tg is as follows.
- the use of the pyrimidine derivative of the present invention can achieve lower power consumption and longer life in a wide range of fluorescent elements and phosphorescent elements as compared with existing materials.
- the compound of the present invention can be applied to organic electroluminescent devices using other fluorescent light emitting materials and phosphorescent materials, and can also be applied to coating-based devices. In addition to flat panel display applications, it is also effective for lighting applications that require both low power consumption and long life.
- the cyclic azine derivative having a novel structure according to the present invention is useful as an organic compound layer of a fluorescent or phosphorescent organic electroluminescent device. That is, an organic electroluminescence device capable of low-voltage driving and high-efficiency emission is provided by using it as an electron transport layer of a fluorescent or phosphorescent organic electroluminescence device. More specifically, the thin film comprising the cyclic azine derivative of the present invention has high surface smoothness, amorphousness, heat resistance, electron transport ability, hole blocking ability, redox resistance, water resistance, oxygen resistance, electron injection characteristics.
- the cyclic azine derivative of the present invention is a wide band gap compound, it can be applied not only to conventional fluorescent device applications but also to phosphorescent devices.
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Abstract
Description
これらの環状アジン誘導体は、良好な電荷輸送特性持つことから蛍光又は燐光有機電界発光素子の構成成分として有用である。よって、本発明は、さらに、これらを有機電界発光素子の有機化合物層の少なくとも一層に用いた、駆動性及び発光性に優れた高効率有機電界発光素子に関する。
また、これらの文献は1,3,5-トリアジンの2,4,6位に全て等しい置換基を有する実施例しか記載されておらず、ガラス転移温度(Tg)に関する具体的な実施例もない。また、有機電界発光素子に用いられるためには薄膜状態で凹凸のないアモルファス性が重要であり、対称性の高い骨格をもつトリアジン誘導体は結晶性が高いという問題点がある。本発明の化合物(1d)は、1,3,5-トリアジンの2,4,6位に異なる置換基を配することで膜の結晶化を制御することを特徴としており、分子骨格に起因する材料の性質が対称型トリアジン誘導体とは異なる。
特許文献2:特開2004-31004号公報
特許文献3:WO2004039786号公報
特許文献4:WO2005105950号公報
特許文献5:WO2007069569号公報
特許文献6:WO2005085387号公報
特許文献7:特開2008-280330号公報
特許文献8:特開2001-143869号公報
特許文献9:特開2004-22334号公報
特許文献10:特開2004-2297号公報
特許文献11:特開2007-137829号公報
本発明のさらに他の目的は、工業的に有利な、上記環状アジン誘導体を構成成分とする有機電界発光素子を提供することにある。
で示される環状アジン誘導体に関するものである。
で示される化合物と、一般式(7)
で示される化合物とを、場合によっては塩基の存在下に、パラジウム触媒の存在下にカップリング反応させることを特徴とする一般式(1a)
で示される環状アジン誘導体の製造方法に関するものである。
で示される化合物と、一般式(9)
で示される化合物とを、塩基及びパラジウム触媒の存在下にカップリング反応させることを特徴とする一般式(1a)
で示される環状アジン誘導体の製造方法に関するものである。
で示される化合物と、一般式(11)
で示される化合物とを、場合によっては塩基の存在下に、パラジウム触媒の存在下でカップリング反応させることを特徴とする一般式(1b)
で示される環状アジン誘導体の製造方法に関するものである。
で示される化合物と、一般式(13)
で示される化合物とを、塩基及びパラジウム触媒の存在下にカップリング反応させることを特徴とする、一般式(1c)
で示される環状アジン誘導体の製造方法に関するものである。
で示される化合物と、一般式(15)
で示される化合物とを、塩基及びパラジウム触媒の存在下にカップリング反応させることを特徴とする、一般式(1d)
で示される環状アジン誘導体の製造方法に関するものである。
で示される環状アジン誘導体を構成成分とする有機電界発光素子に関するものである。
より具体的には、本発明の環状アジン誘導体から成る薄膜は、高い表面平滑性、アモルファス性、耐熱性、電子輸送能、正孔ブロック能、酸化還元耐性、耐水性、耐酸素性、電子注入特性等をもつため、有機電界発光素子の材料として有用であり、とりわけ電子輸送材、正孔ブロック材、発光ホスト材等として用いることができる。
2.正孔注入層
3.正孔輸送層
4.発光層
5.電子輸送層
6.陰極層
一般式(1)において、Ar1で表される炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよい芳香族基の具体例としては、炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよいフェニル基、炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよいナフチル基、炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよいアントリル基、炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよいフェナントリル基、炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよいピリジル基等を挙げることができる。以下、さらに具体的な例を挙げるが、本発明はこれらに限定されるものではない。
炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよいフェニル基としては、フェニル基のほか、p-トリル基、m-トリル基、o-トリル基、4-トリフルオロメチルフェニル基、3-トリフルオロメチルフェニル基、2-トリフルオロメチルフェニル基、2,4-ジメチルフェニル基、3,5-ジメチルフェニル基、2,6-ジメチルフェニル基、メシチル基、2-エチルフェニル基、3-エチルフェニル基、4-エチルフェニル基、2,4-ジエチルフェニル基、3,5-ジエチルフェニル基、2-プロピルフェニル基、3-プロピルフェニル基、4-プロピルフェニル基、2,4-ジプロピルフェニル基、3,5-ジプロピルフェニル基、2-イソプロピルフェニル基、3-イソプロピルフェニル基、4-イソプロピルフェニル基、2,4-ジイソプロピルフェニル基、3,5-ジイソプロピルフェニル基、2-ブチルフェニル基、3-ブチルフェニル基、4-ブチルフェニル基、2,4-ジブチルフェニル基、3,5-ジブチルフェニル基、2-tert-ブチルフェニル基、3-tert-ブチルフェニル基、4-tert-ブチルフェニル基、2,4-ジ-tert-ブチルフェニル基、3,5-ジ-tert-ブチルフェニル基等の置換フェニル基、4-ビフェニリル基、3-ビフェニリル基、2-ビフェニリル基等のビフェニリル基、1,1’:4’,1”-ターフェニル-3-イル基、1,1’:4’,1”-ターフェニル-4-イル基、1,1’:3’,1”-ターフェニル-3-イル基、1,1’:3’,1”-ターフェニル-4-イル基、1,1’:3’,1”-ターフェニル-5’-イル基、1,1’:2’,1”-ターフェニル-3-イル基、1,1’:2’,1”-ターフェニル-4-イル基、1,1’:2’,1”-ターフェニル-4’-イル基等のターフェニリル基、2-(2-ピリジル)フェニル基、3-(2-ピリジル)フェニル基、4-(2-ピリジル)フェニル基、2-(3-ピリジル)フェニル基、3-(3-ピリジル)フェニル基、4-(3-ピリジル)フェニル基、2-(4-ピリジル)フェニル基、3-(4-ピリジル)フェニル基、4-(4-ピリジル)フェニル基等が挙げられる。
有機電界発光素子用材料としての性能がよい点で、ピリジル基で置換されたフェニル基としては、2-(2-ピリジル)フェニル基、3-(2-ピリジル)フェニル基、4-(2-ピリジル)フェニル基、3-(3-ピリジル)フェニル基、4-(3-ピリジル)フェニル基、3-(4-ピリジル)フェニル基、4-(4-ピリジル)フェニル基、5-フェニル-3-(2-ピリジル)フェニル基、5-フェニル-3-(3-ピリジル)フェニル基、5-フェニル-3-(4-ピリジル)フェニル基、3,5-ジ(2-ピリジル)フェニル基が挙げられ、合成が容易である点で、2-(2-ピリジル)フェニル基、3-(2-ピリジル)フェニル基、4-(3-ピリジル)フェニル基、4-(4-ピリジル)フェニル基がさらに好ましい。
有機電界発光素子用材料としての性能がよい点で、縮環フェニル基としては、2-ナフチル基、9-アントリル基、3-フェナントリル基、6-キノリル基が好ましく、合成が容易である点で、6-キノリル基がさらに好ましい。
一般式(11)で示される化合物は、例えば、特開2008-280330号公報(0061)~(0076)に開示されている方法を用いて製造することができる。化合物(11)としては、次の11-1から11-79で示される化合物を例示することができるが、本発明はこれらに限定されるものではない。
で示される、本発明の環状アジン誘導体(1c)におけるベンゼン環上の置換基の例として、次の13a-1から13a-19を例示することができるが、本発明はこれに限定されるものではない。
で示される工程1によって製造することができる。
「工程1」の反応は、MがB(OR1)2である鈴木-宮浦反応の場合には塩基の存在に反応を実施することにより、収率を向上させることができる。「工程1」で用いることのできる塩基としては、水酸化ナトリウム、水酸化カリウム、炭酸ナトリウム、炭酸カリウム、炭酸リチウム、炭酸セシウム、リン酸カリウム、リン酸ナトリウム、フッ化ナトリウム、フッ化カリウム、フッ化セシウム等を例示することができ、収率がよい点で炭酸セシウムが望ましい。塩基と化合物(7)とのモル比は、収率がよい点で1:2から10:1が望ましく、1:1から3:1がさらに望ましい。
「工程1」は、0℃から150℃から適宜選ばれた温度で実施することができ、収率がよい点で40℃から110℃で行うことが望ましい。
で示される工程によっても製造することができる。
「工程2」で用いることのできるパラジウム触媒としては、「工程1」で例示したパラジウム塩及び錯化合物を例示することができる。中でも、第三級ホスフィンを配位子として有するパラジウム錯体は反応収率がよい点で好ましく、入手容易であり、反応収率がよい点で、トリフェニルホスフィンを配位子として有するパラジウム錯体が特に好ましい。パラジウム触媒と化合物(8)とのモル比は、1:200~1:2が好ましく、反応収率がよい点で1:50~1:10がさらに好ましい。
「工程2」の反応は溶媒中で実施することができる。「工程2」で用いることのできる溶媒として、水、ジメチルスルホキシド、ジメチルホルムアミド、テトラヒドロフラン、トルエン、ベンゼン、ジエチルエーテル、エタノール、メタノール又はキシレン等が例示でき、これらを適宜組み合わせて用いてもよい。収率がよい点でトルエン及び水の混合溶媒を用いることが望ましい。
「工程2」は、0℃から150℃から適宜選ばれた温度で実施することができ、収率がよい点で40℃から110℃で行うことがさらに望ましい。
で示した方法により製造することができる。
「工程3」の反応は溶媒中で実施することができる。「工程3」で用いることのできる溶媒として、水、ジメチルスルホキシド、ジメチルホルムアミド、テトラヒドロフラン、トルエン、ベンゼン、ジエチルエーテル、エタノール、メタノール又はキシレン等が例示でき、これらを適宜組み合わせて用いてもよい。収率がよい点でテトラヒドロフランを用いることが望ましい。
「工程3」は、0℃から150℃から適宜選ばれた温度で実施することができ、収率がよい点で40℃から80℃で行うことがさらに望ましい。
で示される工程によって製造することができる。
「工程4」で用いることのできる溶媒として、水、ジメチルスルホキシド、ジメチルホルムアミド、テトラヒドロフラン、トルエン、ベンゼン、ジエチルエーテル、エタノール、メタノール又はキシレン等が例示でき、これらを適宜組み合わせて用いてもよい。収率がよい点でトルエン及びエタノールの混合溶媒を用いることが望ましい。
「工程4」は、0℃から150℃から適宜選ばれた温度で実施することができ、収率がよい点で40℃から80℃で行うことがさらに望ましい。
で示す方法によって製造することができる。
「工程5」で用いることのできる塩基としては、「工程1」で例示した塩基と同様のものを例示することができ、収率がよい点で炭酸カリウムが望ましい。塩基と化合物(19)とのモル比は、1:1から10:1が望ましく、収率がよい点で2:1から3:1がさらに望ましい。
「工程5」で用いることのできる溶媒として、水、ジメチルスルホキシド、ジメチルホルムアミド、テトラヒドロフラン、トルエン、ベンゼン、ジエチルエーテル、エタノール、メタノール又はキシレン等が例示でき、これらを適宜組み合わせて用いてもよい。収率がよい点でトルエン及びエタノールの混合溶媒を用いることが望ましい。
化合物(10)は、「工程5」の終了後に通常の処理をすることで得られる。必要に応じて、再結晶、カラムクロマトグラフィー又は昇華等で精製してもよいが、単離することなく「工程4」に供することもできる。
「工程6」で用いることのできるパラジウム触媒としては、「工程1」で例示したパラジウム塩又は錯化合物と同様のものを例示することができる。中でも、第三級ホスフィンを配位子として有するパラジウム錯体は収率がよい点で好ましい。入手容易であり、収率がよい点で、トリフェニルホスフィンを配位子として有するパラジウム錯体がさらに好ましい。「工程6」で用いるパラジウム触媒の量は、いわゆる触媒量であれば特に制限はないが、収率がよい点で、パラジウム触媒と化合物(12)とのモル比は、1:50~1:10が好ましい。
「工程6」の反応は溶媒中で実施することができる。用いることのできる溶媒として、水、ジメチルスルホキシド、ジメチルホルムアミド、テトラヒドロフラン、トルエン、ベンゼン、ジエチルエーテル、エタノール、メタノール又はキシレン等が例示でき、これらを適宜組み合わせて用いてもよい。収率がよい点でトルエン及び水の混合溶媒を用いることが望ましい。
本発明の環状アジン誘導体(1c)を製造する「工程6」の原料である化合物(12)は、例えば実験例-34~36に示したように、次の反応式で示した方法により製造することができる。
「工程7」は、化合物(20)を塩基及びパラジウム触媒の存在下に、ボラン化合物(16)又はジボロン化合物(17)と反応させることにより、「工程6」で用いる化合物(12)を製造する工程である。この工程では、例えば、The Journal of Organic Chemistry,60巻,7508-7510,1995年又はJournal of Organic Chemistry,65巻,164-168,2000年に開示されている反応条件を適用することにより、収率よく目的物を得ることができる。
「工程2」で用いるボラン化合物(16)又はジボロン化合物(17)と化合物(20)とのモル比に特に制限はないが、1:1~5:1が好ましく、収率がよい点で2:1~3:1がさらに好ましい。
本工程で得られた化合物(12)は、反応後単離してもよいが、単離せずに「工程6」に供してもよい。
「工程8」で用いる化合物(15)と化合物(14)とのモル比は、2:1から5:1が望ましく、収率がよい点で2:1から3:1がさらに望ましい。
「工程8」の反応は、0℃から150℃から適宜選ばれた温度で実施することができ、収率がよい点で50℃から80℃で行うことがさらに望ましい。
次に、本発明の環状アジン誘導体(1d)を製造する「工程8」の原料である化合物(14)は、「工程7」で示した方法に従い合成できる。
得られたトリアジン誘導体のTgは133℃であった。
得られたトリアジン誘導体のTgは107℃であった。
得られたトリアジン誘導体のTgは119℃であった。
得られたトリアジン誘導体のTgは112℃であった。
得られたトリアジン誘導体のTgは127℃であった。
得られたトリアジン誘導体のTgは122℃であった。
得られたトリアジン誘導体のTgは115℃であった。
得られたトリアジン誘導体のTgは118℃であった。
13C-NMR(CDCl3):δ123.4,128.8,129.1,130.6,133.0,135.7,137.6,139.8,169.3,172.0.
13C-NMR(CDCl3):δ123.4,127.3,127.5,128.2,129.0,129.7,130.7,134.7,137.6,139.9,140.3,145.7,169.3,171.8.
融点及びTgを表1に示した。
融点及びTgを表1に示した。
融点及びTgを表1に示した。
融点及びTgを表1に示した。
融点を表1に示した。また、明確なTgは観測されなかった。
融点及びTgを表1に示した。
続いてアルゴン気流下、上記で得られた2-[3-クロロ-5-(9-フェナントリル)フェニル]-4,6-ジフェニル-1,3,5-トリアジン(0.5g、0.96mmol)、1-ナフタレンボロン酸(0.38g、1.73mmol)、酢酸パラジウム(12.9mg、0.058mmol)、炭酸セシウム(1.13g、3.46mmol)をテトラヒドロフラン(50mL)に懸濁し、70℃に昇温して40時間還流した。室温まで冷却後、減圧下で低沸点成分を留去した後、メタノールを加え、析出した固体をろ別した。得られた粗生成物をカラムクロマトグラフィーによって精製し、目的物の2-[3-(1-ナフチル)-5-(9-フェナントリル)フェニル]-4,6-ジフェニル-1,3,5-トリアジンの灰色固体(収量0.56g、収率95%)を得た。
1H-NMR(CDCl3):δ.7.53-7.77(m,15H),7.96(d,J=9.0Hz,2H),8.00(t,J=7.7Hz,2H),8.15(d,J=4.3Hz,1H),8.16(d,J=4.8Hz,1H),8.78(d,J=7.0Hz,4H),8.81(d,8.5Hz,1H),8.87(d,J=8.2Hz,1H),9.05(d,7.7Hz,2H).
基板には、2mm幅の酸化インジウム-スズ(ITO)膜がストライプ状にパターンされたITO透明電極付きガラス基板を用いた。この基板をイソプロピルアルコールで洗浄した後、オゾン紫外線洗浄にて表面処理を行った。洗浄後の基板に、真空蒸着法で各層の真空蒸着を行い、断面図を図1に示すような発光面積4mm2有機電界発光素子を作製した。まず、真空蒸着槽内に前記ガラス基板を導入し、1.0×10-4Paまで減圧した。その後、図1の1に示す前記ガラス基板上に、有機化合物層として正孔注入層2、正孔輸送層3、発光層4及び電子輸送層5を順次成膜し、その後陰極層6を成膜した。正孔注入層2としては、昇華精製したフタロシアニン銅(II)を25nmの膜厚で真空蒸着した。正孔輸送層3としては、N,N’-ジ(ナフチレン-1-イル)-N,N’-ジフェニルベンジジン(NPD)を45nmの膜厚で真空蒸着した。
作製した青色蛍光素子の測定値は、5.8V、2160cd/m2、10.8cd/A、5.9lm/Wであった。またこの素子の輝度半減時間は、171時間であった。
試験例-1の発光層4に替えて、Alq(トリス(8-キノリノラト)アルミニウム(III))を40nmの膜厚で真空蒸着した有機電界発光素子を、試験例-1と同様に作製した。
作製した緑色蛍光素子の測定値は、5.1V、958cd/m2、4.8cd/A、2.9lm/Wであった。またこの素子の輝度半減時間は、1618時間であった。
試験例-1の素子作成条件において、正孔注入層2として、昇華精製したフタロシアニン銅(II)を10nmの膜厚で真空蒸着した。正孔輸送層3としては、N,N’-ジ(ナフチレン-1-イル)-N,N’-ジフェニルベンジジン(NPD)を30nmの膜厚で真空蒸着した。発光層4のホスト材として、4,4’-ビス(カルバゾール-9-イル)ビフェニル(CBP)を用い、ドーパントとして、トリス(2-フェニルピリジン)イリジウム(III)(Ir(ppy)3)をドープ濃度が6%になるように用いて30nmの膜厚に共蒸着した。電子輸送層5としては、本発明の2-[4,4”-ジ(2-ピリジル)-1,1’:3’,1”-テルフェニル-5’-イル]-4,6-ジフェニルピリミジンを50nmの膜厚で真空蒸着した。
作製した緑色燐光素子の測定値は、7.5V、6610cd/m2、33.5cd/A、13.9lm/Wであった。またこの素子の輝度半減時間は、230時間であった。
試験例-1の電子輸送層5に替えて、2-[3,3”-ジ(2-ピリジル)-1,1’:3’,1”-テルフェニル-5’-イル]-4,6-ジフェニルピリミジンを20nmの膜厚で真空蒸着した有機電界発光素子を、試験例-1と同様に作製した。
作製した青色蛍光素子の測定値は、6.3V、2110cd/m2、10.6cd/A、5.3lm/Wであった。またこの素子の輝度半減時間は、165時間であった。
試験例-1の電子輸送層5に替えて、Alqを20nmの膜厚で真空蒸着した有機電界発光素子を、試験例-1と同様に作製した。
作製した青色蛍光素子の測定値は、7.1V、1883cd/m2、9.4cd/A、4.2lm/Wであった。またこの素子の輝度半減時間は、163時間であった。
試験例-2の電子輸送層5に替えて、Alqを20nmの膜厚で真空蒸着した有機電界発光素子を、試験例-2と同様に作製した。
作製した緑色蛍光素子の測定値は、5.6V、957cd/m2、4.8cd/A、2.6lm/Wであった。またこの素子の輝度半減時間は、1318時間であった。
試験例-3の電子輸送層5に替えて、Alqを50nmの膜厚で真空蒸着した有機電界発光素子を、試験例-2と同様に作製した。
作製した緑色燐光素子の測定値は、7.7V、3850cd/m2、16.9cd/A、6.7lm/Wであった。またこの素子の輝度半減時間は、271時間であった。
試験例-3の電子輸送層5に替えて、BAlq(ビス(2-メチル-8-キノリノラト)4-フェニルフェノラト-アルミニウム)を5nm、Alqを45nmの膜厚で真空蒸着した有機電界発光素子を、試験例-3と同様に作製した。
作製した緑色燐光素子の測定値は、9.3V、6170cd/m2、30.9cd/A、10.4lm/Wであった。またこの素子の輝度半減時間は、202時間であった。
試験例-1の電子輸送層5に替えて、実験例-15で得られた2-[5-(9-フェナントリル)-4’-(2-ピリジル)ビフェニル-3-イル]-4,6-ジフェニル-1,3,5-トリアジンを20nmの膜厚で真空蒸着した有機電界発光素子を、試験例-1と同様に作製した。
作製した素子の測定値は、5.3V、10.5cd/Aであった。またこの素子の輝度半減時間は、155時間であった。
試験例-5の発光層4を膜厚40nmのAlq3にした以外は、試験例-5と同様の方法で有機電界発光素子を作製した。光特性は、電流密度20mA/cm2流した時の電圧が5.2V、電流効率が2.5cd/Aであった。またこの素子の輝度半減時間は、2015時間であった。
試験例-5の電子輸送層5を膜厚20nmのAlq3にした以外は、試験例-5と同様の方法で有機電界発光素子を作製した。光特性は、電流密度20mA/cm2流した時の電圧が6.9V、電流効率が6.1cd/Aであった。また、この素子の輝度半減時間は、53時間であった。
試験例-6の電子輸送層5を膜厚20nmのAlq3にした以外は、試験例-6と同様の方法で有機電界発光素子を作製した。光特性は、電流密度20mA/cm2流した時の電圧が5.4V、電流効率が4.3cd/Aであった。また、この素子の輝度半減時間は、1785時間であった。
試験例-5の電子輸送層5を膜厚20nmの4,6-ジフェニル-2-[5-(1-ナフチル)-4’-(2-ピリジル)ビフェニル-3-イル]-1,3,5-トリアジンにした以外は、試験例-5と同様の方法で有機電界発光素子を作製した。光特性は、電流密度20mA/cm2流した時の電圧が6.0V、電流効率が11.1cd/Aであった。また、この素子の輝度半減時間は、113時間であった。
試験例-5の電子輸送層5を膜厚20nmの2-[5-(9-フェナントリル)-3’-(3-ピリジル)ビフェニル-3-イル]-1,3,5-トリアジンにした以外は、試験例-5と同様の方法で有機電界発光素子を作製した。光特性は、電流密度20mA/cm2流した時の電圧が6.1V、電流効率が11.5cd/Aであった。また、この素子の輝度半減時間は、117時間であった。
試験例-5の電子輸送層5を膜厚20nmの2-[3-(2,2’-ビピリジン-6-イル)-5-(9-フェナントリル)フェニル]-4,6-ジフェニル-1,3,5-トリアジンにした以外は、試験例-5と同様の方法で有機電界発光素子を作製した。光特性は、電流密度20mA/cm2流した時の電圧が5.3V、電流効率が8.0cd/Aであった。
試験例-5の電子輸送層5を膜厚20nmの4,6-ジフェニル-2-[5-(9-フェナントリル)-3’-(2-ピリジル)ビフェニル-3-イル]-1,3,5-トリアジンにした以外は、試験例-5と同様の方法で有機電界発光素子を作製した。光特性は、電流密度20mA/cm2流した時の電圧が6.6V、電流効率が9.7cd/Aであった。
試験例-5において、正孔注入層2を10nmのフタロシアニン銅(II)、正孔輸送層3を30nmのN,N’-ビス(1-ナフチル)-N,N’-ジフェニル-4,4’-ビフェニル(NPD)、発光層4を4,4’-ビス(9H-カルバゾール-9-イル)ビフェニル(CBP)とトリス(2-フェニルピリジナート)イリジウム(III)(Ir(PPy)3)を94:6wt%の割合の膜とし、電子輸送層5を5nmのビス(2-メチル-8-キノリノレート)-4-(フェニルフェノレート)アルミニウム(BAlq)及び45nmの2-[5-(9,9-ジメチルフルオレン-2-イル)-4’-(2-ピリジル)ビフェニル-3-イル]-4,6-ジフェニル-1,3,5-トリアジンを順次成膜した層とした。これ以外は試験例-5と同様の方法で有機電界発光素子を作製し、光特性を評価した。光特性は、電流密度20mA/cm2流した時の電圧が7.7V、電流効率が29.2cd/Aであった。
試験例9において、電子輸送層5を5nmのビス(2-メチル-8-キノリノレート)-4-(フェニルフェノレート)アルミニウム(BAlq)及び45nmのAlq3にした以外は試験例―13と同様の方法で有機電界発光素子を作製し、光特性を評価した。光特性は、電流密度20mA/cm2流した時の電圧が9.0V、電流効率が26.7cd/Aであった。
試験例-1の電子輸送層5に替えて、実験例-44で合成した2-[3,5-ビス(2,2’:6’,2”-ターピリジン-4’-イル)フェニル]-4,6-ジフェニル-1,3,5-トリアジンを20nmの膜厚で真空蒸着した有機電界発光素子を、試験例-1と同様に作製した。
作製した素子の測定値は、5.5V、2230cd/m2、11.2cd/A、6.4lm/Wであった。また、この素子の輝度半減時間は、113時間であった。
試験例-15と同様に、図1の1で示すガラス基板上に有機化合物層として、正孔注入層2、正孔輸送層3、発光層4及び電子輸送層5を順次成膜し、その後陰極層6を成膜した有機電界発光素子を作製した。正孔注入層2としては、昇華精製したフタロシアニン銅(II)を10nmの膜厚で真空蒸着した。正孔輸送層3としては、N,N’-ジ(1-ナフチル)-N,N’-ジフェニルベンジジン(NPD)を30nmの膜厚で真空蒸着した。発光層4としては、4-4’-ビス(9-カルバゾリル)ビフェニル(CBP)とトリス(2-フェニルピリジン)イリジウム(III)(Ir(ppy)3)を94:6(質量%)の割合で30nmの膜厚で真空蒸着した。電子輸送層5としては、本発明の実験例-44で合成した2-[3,5-ビス(2,2’:6’,2”-ターピリジン-4’-イル)フェニル]-4,6-ジフェニル-1,3,5-トリアジンを50nmの膜厚で真空蒸着した。
作製した素子の測定値は、8.4V、4030cd/m2、20.2cd/A、7.5lm/Wであった。また、この素子の輝度半減時間は、82時間であった。
試験例-15の電子輸送層5に代えて、汎用電子輸送材料であるAlqを20nmの膜厚で真空蒸着した有機電界発光素子を試験例-15と同様に作製した。作製した素子の測定値は、7.2V、1859cd/m2、9.3cd/A、4.0lm/Wであった。また、この素子の輝度半減時間は、83時間であった。
試験例-16の電子輸送層5に代えて、汎用電子輸送材料であるAlqを50nmの膜厚で真空蒸着した有機電界発光素子を試験例-16と同様に作製した。作製した素子の測定値は、10.4V、3450cd/m2、17.3cd/A、5.2lm/Wであった。また、この素子の輝度半減時間は、108時間であった。
最初に移動度素子の作製法について説明する。基板には2mm幅のITO(酸化インジウム錫)膜がストライプ状にパターンされた、ITO透明電極付きガラス基板を用いた。この基板をイソプロピルアルコールで洗浄した後、オゾン紫外線洗浄にて表面処理を行った。洗浄後の基板に、真空蒸着法で移動度を測定する有機材料の真空蒸着を行い、移動度測定素子を作製した。以下にその詳細を述べる。
その結果、2-[3,5-ジ(1-ピレニル)フェニル]-4,6-ジフェニル-1,3,5-トリアジンの移動度は7.6×10-5cm2/V・SECであった。この値は、特開2002-158091記載の電子輸送材料として一般的なヒドロキシキノリンアルミニウム錯体(Alq)の1×10-6cm2/V・SECと比較して高いものであった。
試験例-19と同様の方法で、2-[3,5-ジ(9-フェナントリル)フェニル]-4,6-ジ-p-トリル-1,3,5-トリアジンの移動度の測定を行なった。移動度は2.4×10-5cm2/V・SECであった。
試験例-19と同様の方法で、2-[3,5-ジ(1-ピレニル)フェニル]-4,6-ジ-p-トリル-1,3,5-トリアジンの移動度の測定を行なった。移動度は6.0×10-5cm2/V・SECであった。
試験例-19と同様の方法で、2-[3,5-ジ(9-アントリル)フェニル]-4,6-ジフェニル-1,3,5-トリアジンの移動度の測定を行なった。移動度は2.9×10-4cm2/V・SECであった。
より具体的には、本発明の環状アジン誘導体から成る薄膜は、高い表面平滑性、アモルファス性、耐熱性、電子輸送能、正孔ブロック能、酸化還元耐性、耐水性、耐酸素性、電子注入特性等をもつため、有機電界発光素子の材料として有用であり、とりわけ電子輸送材、正孔ブロック材、発光ホスト材等として用いることができる。また、本発明の環状アジン誘導体は、ワイドバンドギャップ化合物なため、従来の蛍光素子用途のみならず、燐光素子への応用も十分可能である。
Claims (13)
- 一般式(1)
で示される環状アジン誘導体。
- 式(1)中のAr1が、炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよいフェニル基、ナフチル基又はピリジル基である請求項1に記載の環状アジン誘導体。
- 式(2)中のAr2が、炭素数1から4のアルキル基で置換されたフェニル基、ハロゲン原子で置換されたフェニル基、置換基を有していてもよいフェニル基で置換されたフェニル基、置換基を有していてもよいピリミジル基で置換されたフェニル基、置換基を有していてもよいチアゾリル基で置換されたフェニル基、ピリジル基で置換されたフェニル基、又はフェナントリル基で置換されたフェニル基である請求項1又は2に記載の環状アジン誘導体。
- 式(2)中のAr2が、キノリル基である請求項1又は2に記載の環状アジン誘導体。
- 式(5)中のAr4が置換されていてもよいナフチル基、置換されていてもよいアントリル基、置換されていてもよいフェナントリル基、置換されていてもよいフルオレニル基、置換されていてもよいピレニル基又は置換されていてもよいトリフェニレニル基である請求項1又は2に記載の環状アジン誘導体。
- 一般式(6)
で示される化合物と、一般式(7)
で示される化合物とを、場合によっては塩基の存在下に、パラジウム触媒の存在下にカップリング反応させることを特徴とする一般式(1a)
で示される環状アジン誘導体の製造方法。 - 一般式(8)
で示される化合物と、一般式(9)
で示される化合物とを、塩基及びパラジウム触媒の存在下にカップリング反応させることを特徴とする一般式(1a)
で示される環状アジン誘導体の製造方法。 - 一般式(10)
で示される化合物と、一般式(11)
で示される化合物とを、場合によっては塩基の存在下に、パラジウム触媒の存在下でカップリング反応させることを特徴とする一般式(1b)
で示される環状アジン誘導体の製造方法。 - 一般式(12)
〔式(12)中、Ar1は、炭素数1~4のアルキル基、フェニル基又はピリジル基で置換されていてもよい芳香族基を表す。Z2は、炭素原子又は窒素原子を表す。R1は水素原子、炭素数1~4のアルキル基又はフェニル基を表し、2つのB(OR1)2中のR1は同一又は異なっていてもよい。それぞれのB(OR1)2中の2つのR1は一体となって酸素原子及びホウ素原子を含んで環を形成することもできる。〕
で示される化合物と、一般式(13)
で示される化合物とを、塩基及びパラジウム触媒の存在下にカップリング反応させることを特徴とする、一般式(1c)
で示される環状アジン誘導体の製造方法。 - 一般式(14)
で示される化合物と、一般式(15)
で示される化合物とを、塩基及びパラジウム触媒の存在下にカップリング反応させることを特徴とする、一般式(1d)
で示される環状アジン誘導体の製造方法。 - パラジウム触媒が、第三級ホスフィンを配位子として有するパラジウム触媒である請求項6から10のいずれかに記載の環状アジン誘導体の製造方法。
- 式(7)および式(11)において、Mで表される金属基又はヘテロ原子基が、-B(OR1)2又は-ZnR2〔但し、R1は水素原子、炭素数1から4のアルキル基又はフェニル基を表し、2つのB(OR1)2中のR1は同一又は異なっていてもよく、また、それぞれのB(OR1)2中の2つのR1は一体となって酸素原子及びホウ素原子を含んで環を形成することもできる。R2は、ハロゲン原子を表す。〕で示される基であることを特徴とする請求項6又は8に記載の環状アジン誘導体の製造方法。
- 一般式(1)
で示される環状アジン誘導体を構成成分とする有機電界発光素子。
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Also Published As
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EP2818462B1 (en) | 2017-11-08 |
CN102574813B (zh) | 2016-03-30 |
KR20120046778A (ko) | 2012-05-10 |
EP2468731A4 (en) | 2013-01-16 |
US20120214993A1 (en) | 2012-08-23 |
US9120773B2 (en) | 2015-09-01 |
CN102574813A (zh) | 2012-07-11 |
KR101761431B1 (ko) | 2017-07-25 |
EP2468731B1 (en) | 2014-11-05 |
EP2468731A1 (en) | 2012-06-27 |
TWI482758B (zh) | 2015-05-01 |
EP2818462A1 (en) | 2014-12-31 |
TW201124384A (en) | 2011-07-16 |
US20150329544A1 (en) | 2015-11-19 |
US9624193B2 (en) | 2017-04-18 |
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