ethyl 2,5-dihydro-4-hydroxy-5-oxo-1-pentyl-1H-pyrrole-3-carboxylate 、
盐酸羟胺 在
silica gel 、 dichloromethane ethanol 作用下,
以
吡啶 为溶剂,
反应 16.0h,
以to give the title compound (5.18 g, 98%) as a colorless solid的产率得到Ethyl 4-(hydroxyimino)-5-oxo-1-pentyl-3-pyrrolidinecarboxylate