Organic electroluminescence compound and its preparation method and application
A compound and luminescent technology, applied in organic chemistry, preparation of amino compounds from amines, luminescent materials, etc., can solve the problems of high driving voltage, reduced lifespan, low glass transition temperature, etc., achieve high power efficiency and simple preparation method , the effect of high yield
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Embodiment 1
[0057] Example 1: Preparation of Compound 1
[0058]
[0059] Synthesis of intermediate C-1: bromobenzene (B-1) (15.7 g, 100 mmol) was stirred in 250 mL of dry THF, cooled to -78°C, and 44 mL of n-butyllithium solution was added dropwise under the protection of nitrogen atmosphere. , continue to react for 3h. Then compound A-1 (34.4 g, 100 mmol) was added, the temperature was slowly raised to room temperature, and the reaction was carried out for 16 h. After the reaction, 200 mL of saturated ammonium chloride aqueous solution was slowly added dropwise, stirred for 0.5 h, 300 mL of ethyl acetate was added for layering and extraction, the obtained organic phase was dried over anhydrous magnesium sulfate, and separated and purified by silica gel column chromatography to obtain 31.6 g of intermediate C-1, yield 75%.
[0060] Synthesis of compound 1: Intermediate C-1 (31.6 g, 75 mmol) and intermediate D-1 (31.8, 80 mmol) were placed in 300 mL of dry THF, methanesulfonic acid (...
Embodiment 2
[0061] Example 2: Preparation of Compound 12
[0062]
[0063] Compound 12 was prepared according to the method of Example 1 (yield: 70%, MW: 957.97). The difference from Example 1 is that Intermediate B-12 is used instead of Intermediate B-1 and Intermediate D-12 is used instead of Intermediate D-1.
Embodiment 3
[0064] Example 3: Preparation of Compound 19
[0065]
[0066] Compound 19 was prepared according to the method of Example 1 (yield: 79%, MW: 940.33). The difference from Example 1 is that Intermediate B-19 is used instead of Intermediate B-1 and Intermediate D-19 is used instead of Intermediate D-1.
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