9-Phenylcarbazole → 10-phenyl-11,11-bis(9-phenyl-9H-carbazol-3-yl)-11H-indeno[1,2-b]quinoline

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The chemical compound can be obtained by performing nucleophilic addition reactions twice between starting materials and different aniline aromatic rings (e.g. carbazole or triphenylamine) along with using non-metal catalytic Eaton's reagents on different chemical equivalent basis. First, 10-phenyl-11H-indeno[1,2-b]quinolin-11-one (860 mg, 2.80 mmol) and 9-phenyl-9H-carbazole (1500 mg, 6.10 mmol) are placed in a round bottom flask and then dissolved in 5 ml of dichloromethane. Subsequently, 800 μl of Eaton's reagent is slowly dripped into the flask to promote reaction. After 12 hours of reaction at 100° C., the crude product is extracted with 20 ml of dichloromethane and sodium bicarbonate for three times. Finally, an organic layer of the crude product is dehydrated with magnesium sulfate and concentrated to be sublimated and purified to obtain 1820 mg of 10-phenyl-11,11-bis(9-phenyl-9H-carbazol-3-yl)-11H-indeno[1,2-b]quinoline. The percentage yield is 83.8%.

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