反应详情

温度

80 °C

A mixture of 58.5 g (0.31 mol) of 5-bromothiophene-2-carbaldehyde, 75.5 g (0.31 mol) of 4′-ethyl-3-fluoro-4-biphenylboronic acid, 17.0 g (14.7 mmol) of tetrakis(triphenylphosphine)palladium(0) and 375 ml of 2 N sodium carbonate solution in 935 ml of toluene/ethanol (1:1.5) is heated at 80° C. for 1 h. After cooling, the precipitated product is firstly dissolved by addition of THF. The organic phase is separated off, and the aqueous phase is extracted with MTBE. The combined organic phases are washed with sat. sodium chloride solution, and the solution is dried using sodium sulfate. The residue remaining after removal of the solvents is digested in toluene, and the product is filtered off, giving 5-(4′-ethyl-3-fluorobiphenyl-4-yl)thiophene-2-carbaldehyde as a yellow solid.

1. temperatureAfter cooling
2. customThe organic phase is separated off
3. extractionthe aqueous phase is extracted with MTBE
4. washThe combined organic phases are washed with sat. sodium chloride solution
5. customthe solution is dried
6. customafter removal of the solvents
7. filtrationthe product is filtered off