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Under a nitrogen atmosphere, 15.7 g (77.9 mmol) of 2-chlorocarbazole, 20.02 g (77.9 mmol) of <strong>[62162-97-4]2-bromophenanthrene</strong>,, 110 g of o-xylene, 175 mg (0.8 mmol) of palladium acetate and 473 mg (2.3 mmol) of tri-tert-butylphosphine were added, and the mixture was heated at 55 ° C. for 10 minFollowed by stirring. To this solution, 16.14 g (116.8 mmol) of potassium carbonate was added, and the mixture was stirred at 135 ° C. for 5 hours. After completion of the reaction, the reaction solution was cooled to room temperature, then 50 mL of pure waterThe precipitated crystals were collected by filtration and washed with pure water and methanol to obtain 23.8 g of white crystals (yield 81percent, purity 99.6percent). From 1 H-NMR, the obtained white coloredIt was confirmed that the crystal was the desired 2-chloro-9- (2-phenanthryl) carbazole
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