Sodium Carbonate → 2-(5,6-Dichloro-2-(triethylsilyl)-1H-indol-3-yl)ethanol

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

4,5-Dichloro-2-iodoaniline (1.50 g; 5.21 mmol), 4-(triethylsilyl)but-3-yn-1-ol (1.65 mL; 7.81 mmol), bis(diphenylphosphino)ferrocene]palladium(II) chloride (0.212 g; 0.260 mmol), lithium chloride (0.221 g; 5.21 mmol) and sodium carbonate (1.10 g; 10.42 mmol) were suspended in DMF (14 mL) and the mixture was stirred at 100° C. for 15 hours. The solution was concentrated under reduced pressure and diluted with ethyl acetate. The organic layer was successively washed with brine, sodium thiosulfate, dried and concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel (eluent 2 to 20% ethyl acetate in heptane) to afford 2.0 g (quantitative yield) of the title compound as a brown oil.

Herkunft & Nachweise