Carbazolyl-functional bi-beta-diketo derivative and its production
A technology of functionalization and derivatives, applied in the field of carbazole-functionalized bis-β-diketone compounds, 9-n-butyl-3
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[0037] synthetic part
[0038] 1. Synthesis of N-n-butylcarbazole (BCz)
[0039] Pour 7.52 g of carbazole and 4.4 g of NaOH into a 150 ml round bottom flask, add 60 ml of acetone, stir, and the temperature rises to 60°C to reflux. After about 10 minutes, add 5 drops of Aliquid336, and then reflux for 2 hours, then add 5.5ml of n-bromobutane, and continue to reflux for 24 hours. Replace the device with a distillation device to evaporate the acetone as much as possible. Pour the remaining reactants into a 1000mL beaker filled with ice-water mixture, stir vigorously with a large magnetic stirring bar, and a large amount of yellow solids precipitate out. After stirring for 30 minutes, put it in the refrigerator for 3 to 4 hours, and filter it with suction. A crude product of 8.03 g was obtained. Recrystallized with absolute ethanol to obtain 7.89 g of white needle-like crystals, with a yield of 91.6%.
[0040] 2. Synthesis of 3,6-diacetyl-N-n-butylcarbazole (BCB)
[0041] Ad...
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