Cesium carbonate → racemic (2'R,3R,4'S)-1'-(aminocarbonyl-methyl)-6-bromo-4'-(3-chlorophenyl)-2'-(1-methyl cyclopropyl)-2,3-dihydro-2,6'-dioxospiro[indole-3,3'-piperidine] 1-methoxyethyl trimethylsilane

Participants

Reaction Conditions

Reaction Steps

To a mixture of racemic (2′R,3R,4′S)-6-bromo-4′-(3-chlorophenyl)-2′-(1-methyl cyclopropyl)-2,3-dihydro-2,6′-dioxospiro[indole-3,3′-piperidine]-1-methoxyethyl trimethylsilane (800 mg, 1.36 mmol) and 2-bromo-acetamide (938 mg, 6.8 mmol) in DMF (1 mL) was added Cs2CO3 (4.4 g, 13.4 mmol). The mixture was stirred at 50° C. for 1.5 h, then purified by column chromatography to give title compound (60 mg, 6.8%).

Provenance & Evidence