Organic electroluminescent compound, plurality of host materials, and organic electroluminescent device comprising same
An electroluminescent device and compound technology, applied in the fields of light-emitting materials, organic chemistry, organic semiconductor devices, etc., can solve the problem of not specifically disclosing the specific combination of host materials, etc., and achieve high power efficiency, excellent life characteristics, and low driving voltage. Effect
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example 1
[0183] Example 1: Preparation of Compound H1-27
[0184]
[0185] Synthesis of compound 1
[0186] Dibenzofuran-2-amine (20g, 144.7mmol), 2-bromodibenzofuran (23.8g, 96.47mmol), Pd(OAc) 2 (1.1g, 4.82mmol), 2-dicyclohexylphosphino-2', 6'-dimethoxybiphenyl (S-Phos) (3.9g, 9.65mmol), NaOt-Bu (13.9g, 144.7mmol ) and 485 mL o-xylene were added to the flask, and stirred at 160° C. for 3 hours. After the reaction was complete, the mixture was cooled to room temperature. 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 (4.9 g, yield: 10%).
[0187] Synthesis of compound H1-27
[0188] Compound 1 (4.9g, 12.76mmol), compound 2 (4.2g, 14.0mmol), Pd(dba 3 ) 2 (0.584g, 0.638mmol), S-Phos (0.523g, 1.276mmol), NaOt-Bu (1.8g, 19.14mmol) and 65mL o-xylene were added to the flask and stirred at 160°C for 2 hours. After the reaction was compl...
example 2
[0190] Example 2: Preparation of Compound H1-46
[0191]
[0192] Compound 3 (25g, 74.48mmol), Compound 2 (42.58g, 81.93mmol), Pd(OAc) 2 (0.16g, 7.5mmol), P(t-Bu) 3 (0.28 g, 7.5 mmol), NaOt-Bu (14.31 g, 150 mmol), and 284.09 mL of o-xylene were added to the flask and stirred at 160° C. for 2 hours. After the reaction was complete, the mixture was cooled to room temperature. 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 H1-46 (23.4 g, yield: 50%).
[0193] compound MW melting point H1-46 628.22 256.5℃
example 3
[0194] Example 3: Preparation of Compound H1-43
[0195]
[0196] Compound 4 (20g, 56.96mmol), Compound 2 (18.8g, 57.13mmol), Pd(OAc) 2 (0.13g, 5.7mmol), P(t-Bu) 3 (0.22g, 5.7mmol), NaOt-Bu (11g, 113.92mmol) and 227.27mL o-xylene were added to the flask and stirred at 160°C for 2 hours. After the reaction was complete, the mixture was cooled to room temperature. 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 H1-43 (12.5 g, yield: 34%)
[0197] compound MW melting point H1-43 644.19 249℃
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