反应详情

In a manner similar to the method described in example 4d, racemic (2′S,3S,4′R)-6-chloro-2′-(4-chlorophenyl)-4′-cyclohexyl-2,3-dihydro-2,6′-dioxospiro[indole-3,3′-piperidine]-1-carboxylic acid ethyl ester (0.4 g, 0.78 mmol) was reacted with NaOH (56 mg, 1.4 mmol) in methanol to give racemic (2′S,3S,4′R)-6-chloro-2′-(4-chlorophenyl)-4′-cyclohexylspiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as a white solid (Yield 0.15 g, 44%).