反应详情

A mixture of racemic trans-benzyl 3-azido-4-hydroxypyrrolidine-1-carboxylate (2.96 g, 11.29 mmol) (Method 195) and triphenylphosphine (3.11 g, 11.85 mmol) in THF (25 mL) was stirred at rt for 7 h. Water (2 mL, 111 mmol) was then added and the mixture then stirred at 50° C. overnight. The mixture was then concentrated under reduced pressure, and the residue was purified via silica gel chromatography (100% DCM to 37:3:60/methanol:Et3N:DCM) to yield the title compound (2.96 g, 11.29 mmol) as an oil. 1H NMR (400 MHz, Dichloromethane-d2) δ ppm 7.38-7.19 (m, 5 H), 5.02 (s, 2 H), 3.89 (brs, 1 H), 3.62 (dd, 2 H), 3.29-3.15 (m, 2 H), 3.12-3.01 (m, 1 H); m/z 236.

1. stirringthe mixture then stirred at 50° C. overnight
2. concentrationThe mixture was then concentrated under reduced pressure
3. customthe residue was purified via silica gel chromatography (100% DCM to 37:3:60/methanol:Et3N:DCM)