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TITLE.
[ CAS No. 81090-53-1 ] 4,4'-Dibromotriphenylamine
DATE.
2022年11月15日 18:07:27
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[ CAS No. 81090-53-1 ] 4,4'-Dibromotriphenylamine

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Step 1: Synthesis of 4,4'-dibromotriphenylamine] [0479]A synthetic scheme of 4,4'-dibromotriphenylamine in Step 1 is shown in the following (K-I). [0480][0481]After 12 g (50 mmol) of triphenylamine was dissolved in a mixture solvent of 250 mL of ethyl acetate in a 500-mL conical flask, 18 g (100 mmol) of λT-bromo succinimide (abbreviation: NBS) was added to this solution. After that, this mixture was stirred at room temperature for 24 hours. After completion of the reaction, this mixture solution was washed with water, and magnesium sulfate was added thereto to remove moisture. This mixture solution was filtrated and the obtained filtrate was concentrated and dried to obtain 20 g of an objective white solid at a yield of 99 percent
After 12 g (50 mmol) of triphenylamine was dissolved in 250 mL of ethyl acetate in a 500-mL conical flask, 18 g (100 mmol) of iV-Bromosuccinimide (abbreviation: NBS) was added to this solution. After that, this mixture was stirred at room temperature for 24 hours to be reacted. After completion of the reaction, this mixture solution was washed with water, and magnesium sulfate was added thereto to remove moisture. This mixture solution was filtrated, and the obtained filtrate was concentrated and dried to obtain 20 g of an objective white solid at a yield of 99 percent. A synthesis scheme of Step 1 is shown in (b-4) given below.

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