Triethylamine → HCID 76567932, compound

Participants

Reaction Steps

In a manner similar to the method described in example 193, racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-2′-[2-(2-hydroxy-ethoxy)-5-iodo-3-methoxy-phenyl]spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione prepared in example 196c (0.3 g, 0.46 mmol) was reacted with trimethylsilyl acetylene (0.65 mL, 4.6 mmol), CuI (10 mg), triethylamine (1.9 mL, 13.8 mmol), and dichlorobis(triphenylphosphine)palladium (32 mg, 0.046 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′-[5-ethynyl-2-(2-hydroxy-ethoxy)-3-methoxy-phenyl]spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as a light brown solid (Yield 28 mg).

Provenance & Evidence