Host material and organic electroluminescence device comprising same
A host material and host technology, applied in the field of organic electroluminescent devices, can solve problems such as lack of materials, and achieve the effect of high luminous efficiency
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Embodiment 1
[0049] Embodiment 1: the synthesis of compound 1-1
[0050]
[0051] (1) Synthesis of intermediate 1-1-2
[0052] After compound 1-1-1 (85.0 g, 310 mmol) was dissolved in 1,4-dioxane (800 mL), 2-(4,4,5,5-tetramethyl-1,3 ,2-dioxaborolan-2-yl)aniline (81.5g, 372mmol), Pd(PPh 3 ) 4 (18g, 15.5mmol) and K 2 CO 3 (128 g, 930 mmol) saturated solution, and the resultant was stirred at 100° C. for 6 hours. After the reaction was terminated, the resultant was cooled to room temperature, and extracted with distilled water and ethyl acetate. The organic layer was treated with MgSO 4 Dried, and then filtered and concentrated. The concentrated residue was purified using column chromatography using ethyl acetate and hexane as developing solvents to obtain the target compound 1-1-2 (53.3 g, yield: 60%). LC-MS: M / Z 286.11 (M + ).
[0053] (2) Synthesis of intermediate 1-1-3
[0054] After compound 1-1-2 (80.8, 282 mmol) was dissolved by adding tetrahydrofuran, triethylamine (118 ...
Embodiment 2
[0059] Embodiment 2: the synthesis of compound 2-54
[0060]
[0061] Compound 2-54 was synthesized with reference to the method of Example 1, and the synthesis of compound 1-1 was referred to for other steps to obtain compound 2-54 (42.3 g, yield: 56%). LC-MS: M / Z755.26 (M + ).
Embodiment 3
[0062] Embodiment 3: the synthesis of compound 2-69
[0063]
[0064] Compound 2-69 was synthesized with reference to the method of Example 1, and the synthesis of compound 1-1 was referred to for other steps to obtain compound 2-69 (49.2 g, yield: 63%). LC-MS: M / Z781.31 (M + ).
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