Compound for organic electroluminescence device and organic electroluminescence device thereof
A technology of electroluminescent devices and compounds, applied in organic chemistry, electric solid devices, luminescent materials, etc., can solve the problems of single type, etc., and achieve the effects of increasing service life, improving transmittance, and improving light extraction efficiency
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Embodiment 1
[0107] Embodiment 1: the preparation of compound 2
[0108]
[0109] Under nitrogen protection, compound a-1 (7.53g, 35.35mmol), compound b-1 (6.23g, 35mmol), K 2 CO 3 (14.51g, 105mmol), stirred with 300mL of toluene solvent. Add catalyst Pd(PPh 3 ) 4 (0.40g, 0.35mmol), distilled water 60mL, the temperature was raised to reflux, and the reaction was stirred for 10h. After fully reacting, 80 mL of distilled water was added to terminate the reaction. The crude intermediate A-1 was obtained by filtration under reduced pressure, washed three times with distilled water, and then recrystallized with toluene and ethanol (10:1) to obtain 6.90 g of the target compound A-1 with a yield of 74%.
[0110] Under nitrogen protection, intermediate A-1 (5.85g, 22mmol), 4-bromobiphenyl (20.72g, 88.90mmol), sodium tert-butoxide (4.81g, 50mmol) were dissolved in 200ml dehydrated toluene, and stirred A toluene solution of palladium acetate (0.07 g, 0.33 mmol) and tri-tert-butylphosphine (...
Embodiment 2
[0112] Embodiment 2: the preparation of compound 4
[0113]
[0114] Under nitrogen protection, compound a-1 (43.0g, 202mmol), iodobenzene (22.25ml, 200mmol), sodium tert-butoxide (38.45g, 400mmol) were dissolved in 1800ml dehydrated toluene, and palladium acetate (0.45g , 2mmol), a toluene solution of tri-tert-butylphosphine (1.6g, 8mmol), and reflux for 8 hours. After cooling, filter through a diatomaceous earth / silica gel funnel, the filtrate is distilled under reduced pressure to remove the organic solvent, and the concentrated solution is recrystallized with toluene and ethanol (10:1), and filtered to obtain (45.1g, 156mmol) intermediate B- 1. The yield is 78%.
[0115] Under the protection of nitrogen, the intermediate B-1 (40.5g, 140mmol), 1-iodonaphthalene (20.6ml, 141mmol), sodium tert-butoxide (40.35g, 420mmol) were dissolved in 1500ml dehydrated toluene, and palladium acetate was added under stirring (0.30g, 1.4mmol), tri-tert-butylphosphine (1.15g, 5.6mmol) in...
Embodiment 3
[0119] Embodiment 3: the preparation of compound 18
[0120]
[0121] The synthesis of intermediate B-1 and intermediate C-2 is the same as in Example 2, except that 1-iodonaphthalene in Example 2 is replaced by 4-iodobiphenyl.
[0122] Under nitrogen protection, intermediate C-2 (26.74g, 60.60mmol), D-2 (4.97g, 30mmol), K 2 CO 3 (12.44g, 90mmol), stirred with 300mL of toluene solvent. Add catalyst Pd(PPh 3 ) 4 (0.35g, 0.30mmol), distilled water 70mL, the temperature was raised to reflux, and the reaction was stirred for 10h. After fully reacting, 80 mL of distilled water was added to terminate the reaction. The crude compound 18 was obtained by filtration under reduced pressure, washed three times with distilled water, and then recrystallized with toluene and ethanol (10:1) to obtain 17.25 g of the target compound 18 with a yield of 72%.
[0123] Mass Spectrum m / z: 798.44 (calculated: 798.30). Theoretical element content (%)C 56 h 38 N 4 o 2 : C, 84.19; H, 4.79;...
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