Triethylamine → HCID 74931579, compound

Participants

Reaction Steps

In a manner similar to the method described in example 6a, racemic(2′R, 3R, 4′S)-2′-[2-(4-carbamoyl-phenoxy)-5-iodo-phenyl]-6-chloro-4′-(3-chlorophenyl)spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (0.35 g, 0.5 mmol) was reacted with trimethylsilyl acetylene (0.49 g, 5 mmol), CuI (3 mg), triethylamine (1.52 mL, 15 mmol), and dichlorobis(triphenylphosphine) palladium (0) (28 mg, 0.04 mmol) in anhydrous N,N-dimethylformamide, and then treated with aqueous NaOH in methanol to give racemic(2′R, 3R, 4′S)-2′-[2-(4-carbamoyl-phenoxy)-5-ethynyl-phenyl]-6-chloro-4′-(3-chlorophenyl)spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as an off white solid (Yield 0.25 g, 84%)

Provenance & Evidence