Organic electroluminescent compound, organic electroluminescent material, and organic electroluminescent device comprising same
A technology of luminescence and compounds, which is applied in luminescent materials, organic chemistry, organic semiconductor devices, etc., can solve the problems of low glass transition temperature, no advantage in power efficiency, and shortened device life.
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example 1
[0091] Example 1 prepares compound C-73
[0092]
[0093] 1) Preparation of compound 1-1
[0094] In 20g compound A (81.2mmol), 26.8g two (pinacolate) diborane (105mmol), 2.8g two (triphenylphosphine) dichloride palladium (II) (4mmol), 16g potassium acetate ( 162 mmol) and 400 mL of 1,4-dioxane were introduced into the reaction vessel, and the mixture was stirred overnight at 140°C. After the reaction was completed, the reaction product was cooled to room temperature, and then extracted with ethyl acetate. After drying the extracted organic layer with magnesium sulfate, the solvent was removed with a rotary evaporator. After that, the resulting product was purified by column chromatography to obtain 15.4 g of Compound 1-1 (77%).
[0095] 2) Preparation of compound 1-2
[0096] In 14g compound 1-1 (56.6mmol), 6.1mL 2-bromoaniline (54mmol), 2.6g tetrakis (triphenylphosphine) palladium (2.3mmol), 19.6g potassium carbonate (142mmol), 280mL toluene, 70mL ethanol After ...
example 2
[0106] Example 2: Preparation of Compound C-7
[0107]
[0108] After 3.1 g of compound 1-4 (9.3 mmol) prepared by the same method as in Example 1, 2.6 g of 3-bromo-1,1'-biphenyl (11.2 mmol), 256 mg of tris(dibenzylideneacetone) After dipalladium(0) (0.28 mmol), 227 mg of tris(o-tolyl)phosphine (0.74 mmol), 1.8 g of sodium tert-butoxide (18.6 mmol) and 93 mL of toluene were introduced into the reaction vessel, the mixture was stirred at 120 °C 3 hours. After the reaction was completed, the reaction product was cooled to room temperature, and then extracted with ethyl acetate. After drying the extracted organic layer with magnesium sulfate, the solvent was removed with a rotary evaporator. After that, the resulting product was purified by column chromatography to obtain 2.8 g of Compound C-7 (62%).
[0109] MW UV PL M.P. C-7 484.6 307nm 395nm 274℃
example 3
[0110] Example 3: Preparation of Compound C-91
[0111]
[0112] After 3.5 g of compound 1-4 (10.5 mmol) prepared by the same method as in Example 1, 4.9 g of 2-(3-bromophenyl)-4,6-diphenyl-1,3,5- Triazine (12.6mmol), 385mg tris(dibenzylideneacetone) dipalladium (0) (0.4mmol), 256mg tris(o-tolyl)phosphine (0.8mmol), 2.0g sodium tert-butoxide (21mmol) and 90mL After introducing toluene into the reaction vessel, the mixture was stirred at 130°C for 2 hours. After the reaction was completed, the reaction product was cooled to room temperature, and the solvent was removed with a rotary evaporator. After that, the resulting product was purified by column chromatography to obtain 2.4 g of Compound C-91 (36%).
[0113] MW UV PL M.P. C-91 640.10 308nm 428nm 198℃
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