Sodium Carbonate → 2-(4'-Ethyl-3-fluorobiphenyl-4-yl)selenophene

Beteiligte Stoffe

Reaktionsschritte

A mixture of 34.2 g (0.16 mol) of 2-bromoselenophene, 40.0 g (0.16 mol) of 3-fluoro-4′-ethylbiphenyl-4-ylboronic acid, 10.0 g (8.65 mmol) of tetrakis-(triphenylphosphine)palladium(0) and 200 ml of 2 N sodium carbonate soln. in 500 ml of toluene/ethanol (2:3) is heated at 90° C. for 2 h. After cooling, the organic phase is separated off, and the aqueous phase is extracted with toluene. The combined organic phases are washed with water, and the solution is dried using sodium sulfate. The solution is concentrated to dryness, and the residue is purified by column chromatography (SiO2, n-heptane:toluene=9:1). 2-(4′-Ethyl-3-fluorobiphenyl-4-yl)-selenophene is obtained as a yellow solid.

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