Multiple host materials and organic electroluminescence devices including the multiple host materials
A host material and host technology, applied in the direction of luminescent materials, organic chemistry, organic chemistry methods, etc., can solve problems such as the specific combination of host materials that are not specifically disclosed, and achieve the effects of good life characteristics, low driving voltage, and high power efficiency
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example 1
[0145] Example 1: Preparation of Compound C-1
[0146]
[0147] Synthesis of compound 1-1
[0148] In a flask, (9-phenyl-9H-carbazol-4-yl)boronic acid (96g, 334.3mmol), 2-bromo-1-chloro-3-nitrobenzene (71.8g, 304mmol), Pd 2 (dba) 3 (15g, 16.71mmol), S-Phos (10.9g, 26.76mmol) and K 3 PO 4 (315 g, 1.64 mol) was dissolved in 1500 mL of toluene, and the mixture was stirred at 130° C. for 4 hours. After the reaction was completed, the organic layer was extracted with ethyl acetate, and residual moisture was removed using magnesium sulfate. The residue was dried and separated by column chromatography to obtain compound 1-1 (67 g, yield: 56.6%).
[0149] Synthesis of Compound 1-2
[0150] In a flask, compound 1-1 (23.5g, 58.9mmol), (2-chlorophenyl) boronic acid (18.4g, 117.8mmol), Pd 2 (dba) 3 (2.7mg, 2.95mmol), S-Phos (2.4mg, 5.89mmol), and K 3 PO 4 (63 g, 294.5 mmol) was dissolved in 300 mL of toluene, and the mixture was stirred at 130° C. for 12 hours. After th...
example 2
[0158] Example 2: Preparation of Compound C-29
[0159]
[0160] In a flask, compound 1-4 (4g, 9.84mmol), 3-bromo-1,1':2',1"-terphenyl (3.65g, 11.8mmol), Pd 2 (dba) 3 (448 mg, 0.492 mmol), S-Phos (448 mg, 0.984 mmol), and NaOtBu (2.84 g, 29.52 mmol) were dissolved in 50 mL of o-xylene, and the mixture was stirred at 170° C. for 4 hours. After the reaction was completed, the organic layer was extracted with ethyl acetate, and residual moisture was removed using magnesium sulfate. The residue was dried and separated by column chromatography to obtain compound C-29 (1.5 g, yield: 24%).
[0161] compound MW M.P. C-29 643.78 282℃
example 3
[0162] Example 3: Preparation of Compound C-196
[0163]
[0164] Synthesis of Compound 3-1
[0165] Compound A (60g, 283mmol), compound B (100g, 424mmol), tetrakis (triphenylphosphine) palladium (16.3g, 14.1mmol), cesium carbonate (276g, 849mmol), 1400mL of toluene, 350mL of ethanol and 350mL Distilled water was added to the reaction vessel, and the mixture was stirred at 130 °C for 12 h. After the reaction was completed, the reaction mixture was cooled to room temperature and extracted with ethyl acetate. The extracted organic layer was dried with magnesium sulfate, and the solvent was removed by a rotary evaporator. The residue was then separated by column chromatography to obtain compound 3-1 (38 g, yield: 41%).
[0166] Synthesis of compound 3-2
[0167] Compound 3-1 (38g, 117mmol), phenylboronic acid (35g, 234mmol), tris(dibenzylideneacetone) dipalladium (5.3g, 5.86mmol), S-Phos (4.8g, 11.7mmol), phosphoric acid Tripotassium (62 g, 293 mmol) and 600 mL of t...
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