Sodium Azide → Phenylmethyl 3-azido-4-hydroxy-1-pyrrolidinecarboxylate

Participants

Reaction Conditions

Reaction Steps

To a stirred mixture of benzyl 6-oxa-3-azabicyclo[3.1.0]hexane-3-carboxylate (5.2 g, 23.72 mmol) (Method 197) in DMF (30 mL) was added sodium azide (2.313 g, 35.58 mmol) in a mixture of acetone (20.00 mL) and water (10.00 mL). The resulting mixture was stirred at 80° C. for 24 h. The mixture was then diluted with water and ether, separated, and the organic layer was washed with brine, dried and conc. in vacuo. The resulting material was purified via silica gel chromatography (eluted with 15% to 35% ethyl acetate/hexane), yielding the title compound as a yellow solid (4.10 g, 65.9%). 1H NMR (400 MHz, dichloromethane-d2) δ ppm 7.50-7.25 (m, 5 H), 5.43-5.25 (m, 2 H), 4.31 (brs, 1 H), 4.00 (brs, 1 H), 3.77 (dd, 1 H), 3.69 (dd, 1 H), 3.53 (d, 1 H), 3.44 (dd, 1 H), 2.17 (brs, 1 H); m/z 263.

Provenance & Evidence