Diisopropylethylamine → 6-chloro-4'-(3-chlorophenyl)-2'-(5-fluoro-2-methylphenyl)-1'-methyl spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

HRID 1728010Notes

Reaction equation

HRID 1728010 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]2[N:8](CCO)[C:9](=[O:33])[C:10]3([CH:15]([C:16]4[CH:21]=[CH:20][CH:19]=[C:18]([Cl:22])[CH:17]=4)[CH2:14][C:13](=[O:23])[N:12]([CH3:24])[CH:11]3[C:25]3[CH:30]=[C:29]([F:31])[CH:28]=[CH:27][C:26]=3[CH3:32])[C:5]2=[CH:4][CH:3]=1.CCN(C(C)C)C(C)C>CO>[Cl:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:33])[C:10]3([CH:15]([C:16]4[CH:21]=[CH:20][CH:19]=[C:18]([Cl:22])[CH:17]=4)[CH2:14][C:13](=[O:23])[N:12]([CH3:24])[CH:11]3[C:25]3[CH:30]=[C:29]([F:31])[CH:28]=[CH:27][C:26]=3[CH3:32])[C:5]2=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 81531DiisopropylethylamineHCID 775810676-Chloro-4'-(3-chlorophenyl)-2'-(5-fluoro-2-methylphenyl)-2,3-dihydro-1'-methyl-2,6'-dioxo spiro[indole-3,3'-piperidine]-1-ethanol

Product 1

HCID 775808366-chloro-4'-(3-chlorophenyl)-2'-(5-fluoro-2-methylphenyl)-1'-methyl spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dioneYield 70.9%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-2′-(5-fluoro-2-methylphenyl)-2,3-dihydro-1′-methyl-2,6′-dioxospiro[indole-3,3′-piperidine]-1-ethanol (0.09 g, 0.175 mmol) prepared in example 56b in methanol (10 mL) was added N,N′-diisopropylethylamine (2 mL, 11.1 mmol) and the crude was refluxed for 1 h. The reaction mixture was concentrated and the residue was partitioned between ethyl acetate and water. The organic layer was separated, and concentrated. The residue was purified by chromatography (EtOAc:CH2Cl2=1:2) to give racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-2′-(5-fluoro-2-methylphenyl)-1′-methylspiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as a white solid (Yield 0.06 g, 70.6%).

Workup

  1. temperaturethe crude was refluxed for 1 h
  2. concentrationThe reaction mixture was concentrated
  3. customthe residue was partitioned between ethyl acetate and water
  4. customThe organic layer was separated
  5. concentrationconcentrated
  6. customThe residue was purified by chromatography (EtOAc:CH2Cl2=1:2)

Sources & evidence

ORD record
ord-dc8c4527ccfc493ebdec3f7690b30232
Source dataset
uspto-grants-2009_02
Patent number
US07495007B2

Reaction notes

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