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A mixture of sodium azide (9.5 g, 0.14 mol), 3-bromomethyl-3-hydroxymethyloxetane (24.0 g, 0.14 mol), 20 mL of acetone and 20 mL of water was refluxed for 12 h. The acetone was evaporated and the resulting residue was extracted with two portion of 40 mL of ethyl acetate. The combined organic extracts were dried over magnesium sulfate (MgSO4). The solvent was removed by evaporation. 18.0 g, representing a 94% yield, of 3-azidomethyl-3-hydroxymethyloxetane were obtained as an oil. This oil was found to be essentially pure by gas-liquid chromatography (GLC) analysis. NMR: 1H NMR 3.70 (s, 2 H), 3.84 (d, J=4.9 Hz, 2 H), 4.44 (s, 4 H); 13C NMR 44.283, 53,852, 64,073, 76.227.

1. temperaturewas refluxed for 12 h
2. customThe acetone was evaporated
3. extractionthe resulting residue was extracted with two portion of 40 mL of ethyl acetate
4. dry with materialThe combined organic extracts were dried over magnesium sulfate (MgSO4)
5. customThe solvent was removed by evaporation