Methanol → 3-[[6-(4-Hydroxy-1-piperidyl)-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoic acid

HRID 239959Notes

Reaction equation

HRID 239959 reaction equation
[OH-].[Na+].[OH:3][CH:4]1[CH2:9][CH2:8][N:7]([C:10]2[N:15]=[C:14]([C:16]([NH:18][C:19]3[C:20]([CH3:30])=[C:21]([CH:26]=[CH:27][C:28]=3[CH3:29])[C:22]([O:24]C)=[O:23])=[O:17])[C:13]([CH3:31])=[CH:12][CH:11]=2)[CH2:6][CH2:5]1.CO>C1COCC1>[OH:3][CH:4]1[CH2:9][CH2:8][N:7]([C:10]2[N:15]=[C:14]([C:16]([NH:18][C:19]3[C:20]([CH3:30])=[C:21]([CH:26]=[CH:27][C:28]=3[CH3:29])[C:22]([OH:24])=[O:23])=[O:17])[C:13]([CH3:31])=[CH:12][CH:11]=2)[CH2:6][CH2:5]1

Participants

5

Reactant 3

HCID 887MethanolHCID 14798Sodium HydroxideHCID 86707342Methyl 3-[[6-(4-hydroxy-1-piperidyl)-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoate

Product 1

HCID 867073443-[[6-(4-Hydroxy-1-piperidyl)-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoic acidYield 41.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of aqueous 2N NaOH (2.00 ml) is added to a stirred solution of methyl 3-[[6-(4-hydroxy-1-piperidyl)-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoate (0.21 g, 0.52 mmol) in THF:MeOH (3 ml:1 ml). After 16 h at ambient temperature, the organic solvent is removed under reduced pressure and the residue is diluted with water, acidified to pH 6 with aqueous 1N HCl, and extracted with ethyl acetate (2×20 ml). The organic layers are combined and dried over anhydrous sodium sulfate. The solvent is removed under reduced pressure and the resulting precipitate is triturated with pentane and filtered to afford the title compound as a white solid (0.082 g, 39%). Mass spectrum (m/z): 384.2 (M+1).

Workup

  1. customthe organic solvent is removed under reduced pressure
  2. additionthe residue is diluted with water
  3. extractionextracted with ethyl acetate (2×20 ml)
  4. dry with materialdried over anhydrous sodium sulfate
  5. customThe solvent is removed under reduced pressure
  6. customthe resulting precipitate is triturated with pentane
  7. filtrationfiltered

Sources & evidence

ORD record
ord-9834ab5cc9e3464185ab88c0bcbcf939
Source dataset
uspto-grants-2014_02
Patent number
US08642768B2

Reaction notes

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