Methanol → racemic (2'R,3R,4'S)-6-chloro-4'-(3-chlorophenyl)-1'-[(hydroxycarbonyl)-methyl]-2'-(2-methylphenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

HRID 1727994Notes

Reaction equation

HRID 1727994 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:36])[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]([CH2:24][C:25]([O:27]C)=[O:26])[CH:11]3[C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=3[CH3:35])[C:5]2=[CH:4][CH:3]=1.CO.[OH-].[Na+]>O1CCCC1>[Cl:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:36])[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]([CH2:24][C:25]([OH:27])=[O:26])[CH:11]3[C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=3[CH3:35])[C:5]2=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 887MethanolHCID 14798Sodium HydroxideHCID 131727320racemic (2'R,3R,4'S)-6-chloro-4'-(3-chlorophenyl)-1'-[(methoxycarbonyl)-methyl]-2'-(2-methylphenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

Product 1

HCID 73315581racemic (2'R,3R,4'S)-6-chloro-4'-(3-chlorophenyl)-1'-[(hydroxycarbonyl)-methyl]-2'-(2-methylphenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To the solution of racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-1′-[(methoxycarbonyl)-methyl]-2′-(2-methylphenyl)spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (0.21 g, 0.4 mmol) prepared in 29b in the mixture of methanol (10 mL) and tetrahydrofuran (20 mL) was added aqueous NaOH solution (1N, 10 mL, 10 mmol). The reaction mixture was stirred at room temperature for overnight and then concentrated. The residue was neutralized to “pH” ˜7, then extracted with ethyl acetate. The organic layer was separated, washed with H2O, brine, dried over MgSO4 and concentrated to give racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-1′-[(hydroxycarbonyl)-methyl]-2′-(2-methylphenyl)spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as a white foam.

Workup

  1. concentrationconcentrated
  2. extractionextracted with ethyl acetate
  3. customThe organic layer was separated
  4. washwashed with H2O, brine
  5. dry with materialdried over MgSO4
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-7bcdc78ee2964eceb69bed4f5ad49a1a
Source dataset
uspto-grants-2009_02
Patent number
US07495007B2

Reaction notes

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