Organic electroluminescent compound, a plurality of host materials and organic electroluminescent device comprising the same
A host material and compound technology, which is applied in the field of organic electroluminescent compounds, can solve problems such as not specifically disclosing specific combinations of various host materials
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example 1
[0153] Example 1: Preparation of Compound C-295
[0154]
[0155] Synthesis of Compound 1-1
[0156] In a flask, 2-bromo-7-chlorodibenzo[b,d]furan (10 g, 35.17 mmol), (4,4,4',4',5,5,5',5'-octamethyl) Base-2,2'-bis(1,3,2-dioxaborolane) (14 g, 53.5 mmol), PdCl 2 (PPh 3 ) 2 (2.5 g, 3.57 mmol), and KOAc (8.78 g, 89.25 mmol) were dissolved in 180 mL of 1,4-dioxane, and the mixture was refluxed at 150 °C for 2 hours. After the reaction was completed, the organic layer was extracted with ethyl acetate, and magnesium sulfate was used to remove residual moisture. The residue was dried and separated by column chromatography to obtain 9 g of Compound 1-1 (yield: 76.8%).
[0157] Synthesis of Compounds 1-2
[0158] In a flask, compound 1-1 (9 g, 27.4 mmol), 2-chloro-4(naphthalen-2-yl)-6-phenyl-1,3,5-triazine (9.6 g, 30 mmol), K 2 CO 3 (9.46g, 68.5mmol), and Pd (PPh 3 ) 4 (1.58 g, 1.37 mmol) was dissolved in 137 mL of toluene, 68.5 mL of ethanol and 68.5 mL of water, and ...
example 2
[0162] Example 2: Preparation of Compound C-304
[0163]
[0164] In a flask, compound 1-2 (5 g, 10.3 mmol), (naphthalene-2-yl)-boronic acid (2.13 g, 12.4 mmol), Pd 2 (dba) 3 (417 mg, 0.515 mmol), S-Phos (423 mg, 1.03 mmol), and NaOtBu (2.5 g, 25.75 mmol) were dissolved in 50 mL of xylene, and the mixture was refluxed at 160 °C for 2 hours. After the reaction was completed, the organic layer was extracted with ethyl acetate, and magnesium sulfate was used to remove residual moisture. The residue was dried, and separated by column chromatography to obtain 1.1 g of compound C-304 (yield: 18.6%).
[0165] MW melting point C-304 575.2 239.5℃
example 3
[0166] Example 3: Preparation of Compound C-296
[0167]
[0168] Synthesis of compound 3-1
[0169] In a flask, 8-bromo-1-chlorodibenzo[b,d]furan (10 g, 35.17 mmol), (4,4,4',4',5,5,5',5'-octa Methyl-2,2'-bis(1,3,2-dioxaborane) (14g, 53.5mmol), PdCl 2 (PPh 3 ) 2 (2.5 g, 3.57 mmol), and KOAc (8.78 g, 89.25 mmol) were dissolved in 180 mL of 1,4-dioxane, and the mixture was refluxed at 150 °C for 4 hours. After the reaction was completed, the organic layer was extracted with ethyl acetate, and magnesium sulfate was used to remove residual moisture. The residue was dried, and separated by column chromatography to obtain 9.2 g of compound 3-1 (yield: 78.5%).
[0170] Synthesis of compound 3-2
[0171] In a flask, compound 3-1 (9.2 g, 28 mmol), 2-chloro-4(naphthalen-2-yl)-6-phenyl-1,3,5-triazine (10.2 g, 32.2 mmol), K 2 CO 3 (9.67g, 70mmol), and Pd (PPh 3 ) 4 (1.61 g, 1.4 mmol) was dissolved in 140 mL of toluene, 70 mL of ethanol and 70 mL of water, and the mixtu...
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