反应详情

温度

80 °C

1 g of 3,8-dibromofluoranthene, prepared by dibromination of fluoranthene in chloroform with elemental bromine, was dissolved under protective gas in 100 ml of dried toluene and degassed repeatedly. 19.4 g of potassium carbonate dissolved in 47 ml of ethanol/water (1:1 parts by volume) and 1 g of 4-biphenylboronic acid were added and degassed again. Subsequently, 0.32 g of tetrakis(triphenylphosphine)palladium(0) (Pd(PPh3)4) was added under protective gas and the mixture was stirred at 80° C. for 16 hours. The reaction mixture was filtered and dried. Yield: 14% as a yellowish solid. λmax,em (toluene)=479 nm, quantum yield (toluene): 74%.

1. customdegassed repeatedly
2. dissolution19.4 g of potassium carbonate dissolved in 47 ml of ethanol/water (1:1 parts by volume)
3. addition1 g of 4-biphenylboronic acid were added
4. customdegassed again
5. additionSubsequently, 0.32 g of tetrakis(triphenylphosphine)palladium(0) (Pd(PPh3)4) was added under protective gas
6. filtrationThe reaction mixture was filtered
7. customdried
8. customλmax,em (toluene)=479 nm, quantum yield (toluene)