Triethylamine → HCID 74931514, compound

Participants

Reaction Steps

In a manner similar to the method described in example 6a, racemic(2′R, 3R, 4′S)-6-chloro-4′-(3-chlorophenyl)-2′-[2-(4-cyano-phenoxy)-5-iodo-phenyl]spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (0.65 g, 0.96 mmol) was reacted with trimethylsilyl acetylene (0.94 g, 9.6 mmol), CuI (10 mg), triethylamine (2.89 g, 28.7 mmol), and dichlorobis(triphenylphosphine) palladium (0) (53.6 mg, 0.077 mmol) in anhydrous N,N-dimethylformamide, and then treated with aqueous NaOH in methanol to give racemic(2′R, 3R, 4′S)-6-chloro-4′-(3-chlorophenyl)-2′-[2-(4-cyano-phenoxy)-5-ethynyl-phenyl]spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as an off white solid (Yield 0.285 g, 51%)

Provenance & Evidence