Iodoethane → HCID 18366004, compound

Participants

Reaction Conditions

Reaction Steps

1.0 g (4.2 mmol) of 3-(4-hydroxytetrahydrofuran-3-yloxy)-4-methoxybenzonitrile (A15) in 5 ml of dimethylformamide are added dropwise under a nitrogen atmosphere to a solution of 140 mg (4.6 mmol) of sodium hydride in 5 ml of dimethylformamide and the mixture is heated at 40° C. for 1 h. 600 μl (7.5 mmol) of ethyl iodide, dissolved in 1 ml of dimethylformamide, are then added dropwise at RT. The mixture is stirred at RT for 2 h, concentrated, treated with 25 ml of water and acidified with 2 N hydrochloric acid. After extraction with 3×25 ml of ethyl acetate, the combined organic phases are washed with saturated sodium chloride solution, dried over magnesium sulfate and concentrated. For further purification, the product is chromatographed on silica gel [toluene/ethyl acetate=4:1]. The product-containing fractions are concentrated and the residue is crystallized from isopropanol. 660 mg of the title compound of m.p. 64-66° C. are obtained.

Provenance & Evidence