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

Participants

Reaction Steps

Next, 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 gas stream and then 1.7 g of benzyltrimethylammonium tribromide dissolved in 5 ml of dichloromethane was added dropwise. This mixed solution was stirred at room temperature for 2 hours and 20 ml of water was poured into the solution, followed by extraction with 20 ml of dichloromethane. The organic layer was washed twice with 20 ml of water, dried over magnesium sulfate and then evaporated. To the resulting solid, 10 ml of methanol was added, followed by standing overnight. The precipitated solid was filtered and then vacuum-dried to obtain 1.9 g of 1-bromo-7-t-butyl-3-phenylpyrene.

Provenance & Evidence