Propargyl alcohol → [3-(3-Hydroxyprop-1-ynyl)phenoxy]acetic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

The compound (1.00 g, 3.00 mmol) of Example 22-1 was dissolved in triethylamine (30 ml) under an atmosphere of nitrogen. Thereto were added propargyl alcohol (0.35 ml, 6.00 mmol), copper(I) iodide (6.00 mg, 30.0 μmol) and dichlorobis(triphenylphosphine)palladium (II) (42.0 mg, 60.0 μmol) and the mixture was stirred for 1 hour at 70° C. The mixture was cooled and thereto was added ethyl acetate. The mixture was washed with 10% aqueous citric acid solution, water, an aqueous saturated sodium hydrogencarbonate solution and an aqueous saturated sodium chloride solution in the order and dried over sodium sulfate. The solvent was removed and purified with silica gel chromatography (hexane:ethyl acetate, 3:1–2:1) to give the subject compound as a yellow oil(537 mg, 68%).

Provenance & Evidence