反应详情

温度

0 °C

To a mixture of tert-butyl [(1S)-2-hydroxy-1-methylethyl]carbamate 57 (4.03 g, 23.0 mmol), N-hydroxyphthalimide (5.63 g, 34.5 mmol) and triphenylphosphine (9.05 g, 34.5 mmol) in anhydrous THF (172 mL) at 0° C. under nitrogen was added DIAD (6.69 mL, 34.5 mmol) in anhydrous THF (40 mL) over 15 minutes. The mixture was stirred at 0° C. for 30 min and at room temperature for 2.5 h. Solvent was evaporated off and the residue was subjected to chromatography to give a white solid 58 (7.38 g).

1. customSolvent was evaporated off