Triethylamine → HCID 74931357, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of racemic(2′R, 3R, 4′S)-6-chloro-4′-(3-chlorophenyl)-2′-[5-iodo-2-(4-piperidinyloxy)-phenyl]spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (0.1 g, 0.15 mmol) prepared in example 5a in ethanol (2 mL) was added triethylamine (45.7 mg, 0.46 mmol) and 2-bromoethanol (42.4 mg, 0.345 mmol) (Aldrich). The reaction mixture was heated at 80° C. for 18 h, then cooled to room temperature and concentrated. The residue was partitioned between ethyl acetate and water. The organic layer was separated, and the aqueous layer was extracted with ethyl acetate. The organic layers were combined, washed with brine, dried over MgSO4, and concentrated. The residue was purified by chromatography (MeOH:EtOAc:NEt3=12:88:5) to give racemic(2′R, 3R, 4′S)-6-chloro-4′-(3-chlorophenyl)-2′-{2-[1-(2-hydroxy-ethyl)-4-piperidinyloxy]-5-iodo-phenyl}spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as a white solid (Yield 36 mg, 34%)

Provenance & Evidence