Organic electroluminescence compound containing benzonaphthofuran and luminescent device
An electroluminescence and compound technology, applied in the field of organic electroluminescence devices, can solve the problems of reduced device efficiency, unbalanced charge in the light-emitting layer, difficult electron flow, etc. Effect
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Embodiment 1
[0054] Synthetic route of compound 9
[0055]
[0056] The synthetic method of intermediate 9-1
[0057] In the flask, add bromobenzonaphthofuran (5g, 17mmol), 3-boronic acid-9-phenylcarbazole (5.4g, 18.6mmol), potassium carbonate (5.4g, 40mmol), palladium acetate (0.05 g), X-phos (0.1g), tetrahydrofuran (50mL), and water (20mL), heated to reflux for 10 hours under nitrogen protection, cooled, extracted with dichloromethane, dried, concentrated, and the crude product was purified by column chromatography Obtained 6.6 g, 85% yield.
[0058] The synthetic method of intermediate 9-2
[0059] In the flask, add intermediate 9-1 (6g, 13mmol), dry tetrahydrofuran (70mL), cool to -78°C under nitrogen protection, slowly add 2.5M n-butyllithium n-hexane solution (15.6mmol) , slowly warming up to room temperature and stirring for 2 hours, cooling to -78°C again, slowly adding triisopropyl borate (4g, 15.6mmol), after the addition was complete, slowly warming up to room temperature,...
Embodiment 2
[0063] Synthetic route of compound 20
[0064]
[0065] The synthesis method is the same as that of compound 9, the raw materials used are intermediate 9-2 and bromobenzimidazole, and the yield is 78%.
Embodiment 3
[0067] Synthetic route of compound 24
[0068]
[0069] The synthesis method of intermediate 24-1 is the same as that of intermediate 9-1, the raw material used is 9-phenyl-2-carbazole boronic acid, and the yield is 79%.
[0070] The synthesis method of intermediate 24-2 is the same as that of intermediate 9-2, the raw material used is intermediate 24-1, and the yield is 38%.
[0071] The synthesis method of compound 24 was the same as that of compound 9, and the yield was 73%.
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