4'-ethyl 5'-methyl (3R,4'S,5'R)-5-chloro-2-oxo-5'-phenyl-1-(phenylcarbamoyl)spiro[indoline-3,3'-pyrrolidine]-4',5'-dicarboxylate 在
silica gel 、 potassium hydroxide 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以70%的产率得到(3R,4'S,5'R)-4'-ethyl 5'-methyl 5-chloro-2-oxo-5'-phenylspiro[indoline-3,3'-pyrrolidine]-4',5'-dicarboxylate