Pyrazolopyrimidine compound, application of pyrazolopyrimidine compound and luminous device
A pyrazolopyrimidine and compound technology, applied in the field of organic electroluminescent materials, can solve problems such as charge imbalance in the light-emitting layer, lower device efficiency, and difficult flow of electrons, and achieve high luminous purity, good thermal stability, and high luminescence efficiency effect
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Embodiment 1
[0046] Synthetic route of compound 7
[0047]
[0048] The synthetic method of compound 7
[0049] In a flask, add 3-iodo-6-bromopyrazolo[1,5-a]pyrimidine (1g, 3.1mmol), 4-dianilinophenylboronic acid (1.8g, 6.2mmol), potassium carbonate (0.86g , 6.2mmol), tetrakistriphenylphosphine palladium (50mg), tetrahydrofuran (20mL) and water (10mL), under the protection of nitrogen, heated to reflux for 12 hours, cooled, extracted with dichloromethane, dried, concentrated, the crude product was Purified by column chromatography to obtain 1.59 g of the product with a yield of 85%.
Embodiment 2
[0051] Synthetic route of compound 10
[0052]
[0053] The synthetic method of intermediate 10-1
[0054] The synthesis method is the same as that of compound 7, the raw materials used are 3-iodo-6-bromopyrazolo[1,5-a]pyrimidine and 2-triphenylene boronic acid, and the yield is 67%.
[0055] The synthetic method of compound 10
[0056] Its synthesis method is the same as that of compound 7, the raw materials used are intermediate 10-1 and 4-carbazolylphenylboronic acid, and the yield is 78%.
Embodiment 3
[0058] Synthetic route of compound 11
[0059]
[0060] Its synthesis method is the same as that of compound 7, the raw materials used are 3-iodo-6-bromopyrazolo[1,5-a]pyrimidine and 4-carbazolylphenylboronic acid, and the yield is 82%.
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