Organic electroluminescence compound with screw structure and luminescent device thereof
A compound and luminescence technology, applied in organic chemistry, electrical solid devices, electrical components, etc., can solve problems such as charge imbalance in the light-emitting layer, lower device efficiency, and difficult flow of electrons, and achieve good electroluminescence efficiency and long life , good thermal stability effect
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Embodiment 1
[0051] Synthesis of compound 1
[0052]
[0053] Synthesis of Intermediate 1-1
[0054] Add 4-bromo-9,9'-spirobifluorene (20g, 51mmol), 2-chloroaniline (10g, 76mmol), sodium tert-butoxide (10g, 102mmol), palladium acetate (0.5g), X -phos (1g) and o-xylene (200ml), heated to reflux for 8 hours, hot filtered to remove inorganic matter, cooled, concentrated, and the crude product was purified by column chromatography to obtain 13g of product with a yield of 58%.
[0055] Synthesis of intermediate body 1-2
[0056] In a flask, add Intermediate 1-1 (12g, 27mmol), potassium carbonate (7.5g, 54mmol), tricyclohexylphosphine tetrafluoroborate (1g), palladium acetate (0.5g) and dimethylacetamide (150ml ), heated to reflux under nitrogen protection for 8 hours, removed most of the solvent under reduced pressure, cooled, added water and dichloromethane, extracted, the organic layer was dried and concentrated, and the thick product was purified by column chromatography to obtain 5.8g ...
Embodiment 2
[0064] Synthesis of compound 7
[0065]
[0066] Synthesis of Intermediate 7-1
[0067] The synthesis method is the same as that of intermediate 1-3, except that p-bromoiodobenzene is used instead of m-bromoiodobenzene, and the yield is 75%.
[0068] Synthesis of Intermediate 7-2
[0069] The synthesis method is the same as that of Intermediate 1-4, except that Intermediate 1-4 is replaced by Intermediate 7-1, and the yield is 82%.
[0070] Synthesis of compound 7
[0071] The synthesis method is the same as that of compound 1, except that intermediate 1-4 is replaced by intermediate 7-2, and the yield is 71%. MS: e / z=648.35.
Embodiment 3
[0073] Synthesis of compound 23
[0074]
[0075] The synthesis method was the same as that of compound 1, except that 3-chloro-benzothiophene[3,2-c]pyridine was used instead of 3-chloro-benzofuro[3,2-c]pyridine, and the yield was 79%. MS: e / z=664.36.
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