反应详情

In a manner similar to the method described in example 24c, racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-2,3-dihydro-2′-(2-methylphenyl-2,6′-dioxospiro[indole-3,3′-piperidine]-1-carboxylic acid tert-butyl ester (0.3 g, 0.54 mmol) prepared in example 24b was reacted with LiH (86 mg, 10.9 mmol) (Aldrich) and iodoethane (2 mL, 25 mmol) in N,N-dimethyl-formamide to give racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-1′-ethyl-2,3-dihydro-2′-(2-methylphenyl)-2,6′-dioxospiro[indole-3,3′-piperidine]-1-carboxylic acid tert-butyl ester as a white foam (Yield: 0.2 g, 63%).