Sodium Hydroxide → (3R,5S)-(tert-butoxycarbonyl)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-3-carboxylic acid

HRID 1509434Notes

Reaction equation

HRID 1509434 reaction equation
[CH3:1][O:2][CH2:3][CH2:4][CH2:5][CH2:6][N:7]1[C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=2[N:9]=[C:8]1[C:16]([N:18]([CH2:36][CH:37]([CH3:39])[CH3:38])[C@@H:19]1[CH2:24][N:23]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:22][C@H:21]([C:32]([O:34]C)=[O:33])[CH2:20]1)=[O:17].[OH-].[Na+]>CO>[C:28]([O:27][C:25]([N:23]1[CH2:24][C@@H:19]([N:18]([C:16]([C:8]2[N:7]([CH2:6][CH2:5][CH2:4][CH2:3][O:2][CH3:1])[C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=3[N:9]=2)=[O:17])[CH2:36][CH:37]([CH3:38])[CH3:39])[CH2:20][C@@H:21]([C:32]([OH:34])=[O:33])[CH2:22]1)=[O:26])([CH3:30])([CH3:31])[CH3:29]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 583555501-tert-Butyl 3-methyl(3R,5S)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-1,3-dicarboxylate

Product 1

HCID 58355779(3R,5S)-(tert-butoxycarbonyl)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-3-carboxylic acidYield 102.6%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
50 °C

Procedure

1-tert-Butyl 3-methyl (3R,5S)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-1,3-dicarboxylate (15 g) was dissolved in methanol (150 ml), 4N-aqueous sodium hydroxide solution (250 ml) was added, and the mixture was stirred at 50° C. for 1 hr. The solvent was evaporated under reduced pressure, and the residue was ice-cooled, neutralized with 2N hydrochloric acid, and extracted twice ethyl acetate (500 ml). The extract was washed with brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was dried under reduced pressure to give the object product (15.0 g).

Workup

  1. customThe solvent was evaporated under reduced pressure
  2. temperaturecooled
  3. extractionextracted twice ethyl acetate (500 ml)
  4. washThe extract was washed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customThe residue was dried under reduced pressure

Sources & evidence

ORD record
ord-de1ebcb1f6544e599ff1db2a94481f69
Source dataset
uspto-grants-2015_12
Patent number
US09221836B2

Reaction notes

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