Isopropanol → 2-[(Propan-2-yl)oxy]thiophene

Participants

Reaction Conditions

Reaction Steps

To a mixture of 10 mL anhydrous isopropanol and 5 mL anhydrous tetrahydrofuran under argon at room temperature was added sodium metal (350 mg, 15.22 mmol). The resulting mixture was stirred vigorously at 35° C. until all the sodium metal was consumed (ca. 20 minutes). Copper(I) iodide (386 mg, 2.03 mmol) and 2-iodothiophene (2.13 g, 10.14 mmol) were added and the resulting suspension heated to 90° C. and stirred vigorously for 16 h. After cooling to room temperature, 20 mL of 0.5 M potassium cyanide aqueous solution was added and the resulting mixture stirred for 30 minutes. Organics were extracted with hexanes (2×75 mL), washed with water (3×50 mL) and brine (50 mL), dried over magnesium sulfate, filtered and concentrated. The residue was subjected to chromatography on silica gel (100% hexanes) to give 2-isopropoxythiophene (250 mg, 16%). Used without further characterization.

Provenance & Evidence