Dimedone → 5-(4,6-Dimethoxypyrimidin-2-yl)oxy-3-ethylthiocarbonyl-2-methylbenzofuran-4-carboxylic Acid

Beteiligte Stoffe

Reaktionsschritte

1.60 g of allyl 5-(4,6-dimethoxypyrimidin-2-yl)oxy-3-ethylthiocarbonyl-2-methylbenzofuran-4-carboxylate and 0.54 g of dimedone were dissolved in 14 ml of tetrahydrofuran, and 40 mg of tetrakistriphenylphosphine palladium (0) was added thereto under a nitrogen atmosphere. The mixture was stirred at room temperature for 3 hours. The reaction solution was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (n-hexane/ethyl acetate=2/1) to obtain 1.33 g (yield: 91%) of the desired compound.

Herkunft & Nachweise