反应详情

CDI (39.7 mg, 0.245 mmol) is added to a solution of α-methyl-3-(2-methylpropyl)-2-oxo-1-(2-phenylethyl)-3-pyrrolidineacetic acid (74.0 mg, 0.233 mmol) and CH2Cl2 (2.0 mL). The solution is stirred for 1 hour at room temperature. To this is added O-benzylhydroxylamine.HCl (63.2 mg, 0.396 mmol) and N-methylmorpholine (44 μL, 0.40 mmol). The resultant solution is stirred for 16 hours at room temperature. Aqueous workup (CH2Cl2, MgSO4) and purification by flash chromatography (2:1 EtOAc:hexane) gives 88.1 mg (89%) of the title compound as an oil.

1. customAqueous workup (CH2Cl2, MgSO4) and purification by flash chromatography (2:1 EtOAc:hexane)