Methanol → 1-Bromo-7-t-butyl-3-phenylpyrene

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Reaction Steps

Then, a mixed solution of 1.5 g of 7-t-butyl-1-phenylpyrene, 25 ml of dichloromethane and 8 ml of methanol was cooled to 0° C. under a nitrogen stream, and 1.7 g of benzyltrimethylammonium tribromide dissolved in 5 ml of dichloromethane was added dropwise. After this mixed solution was stirred at room temperature for 2 hours, 20 ml of water was added, and this was extracted with 20 ml of dichloromethane. The organic layer was washed with 20 ml of water two times, dried with magnesium sulfate, and evaporated. To the resulting solid was added 10 ml of methanol, and this was allowed to stand overnight. The precipitated solid was filtered, and vacuum-dried to obtain 1.9 g of 1-bromo-7-t-butyl-3-phenylpyrene.

Provenance & Evidence