Sodium Hydroxide → N-[(2-chloro-6-methylphenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine

HRID 895925Notes

Reaction equation

HRID 895925 reaction equation
C[O:2][C:3](=[O:36])[C@H:4]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([C:23]2[C:24](=[O:35])[N:25]([CH3:34])[C:26]([CH3:33])=[CH:27][C:28]=2[C:29]([F:32])([F:31])[F:30])=[CH:19][CH:18]=1)[NH:5][C:6]([C:8]1[C:13]([CH3:14])=[CH:12][CH:11]=[CH:10][C:9]=1[Cl:15])=[O:7].[OH-].[Na+]>C(O)C>[Cl:15][C:9]1[CH:10]=[CH:11][CH:12]=[C:13]([CH3:14])[C:8]=1[C:6]([NH:5][C@H:4]([C:3]([OH:36])=[O:2])[CH2:16][C:17]1[CH:18]=[CH:19][C:20]([C:23]2[C:24](=[O:35])[N:25]([CH3:34])[C:26]([CH3:33])=[CH:27][C:28]=2[C:29]([F:32])([F:31])[F:30])=[CH:21][CH:22]=1)=[O:7]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 69714689N-[(2-chloro-6-methylphenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine methyl ester

Product 1

HCID 69714767N-[(2-chloro-6-methylphenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanineYield 80.5%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
42.5 °C

Procedure

To a suspension of N-[(2-chloro-6-methylphenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine methyl ester (91 mg, 0.174 mmol) in ethanol (5 mL) was added 1N aqueous sodium hydroxide solution (4 mL) at room temperature. The resulting solution was heated to 40-45° C. and stirred for 4 h. Then, the ethanol was removed under vacuum and the residue was diluted with water (25 mL). The aqueous solution was washed with diethyl ether (25 mL) to remove any neutral impurities. The aqueous layer was acidified with 1.0 N HCl and was extracted with ethyl acetate (2×25 mL). The combined organic extracts were washed with brine solution (50 mL) and were dried over anhydrous magnesium sulfate. Filtration of the drying agent and concentration of the filtrate afforded 71 mg (80% yield) of N-[(2-chloro-6-methylphenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine as a white solid: mp 220-223° C. ES-HRMS m/e calcd for C25H22ClF3N2O4 (M+Na) 529.1111. found 529.1119.

Workup

  1. customThen, the ethanol was removed under vacuum
  2. additionthe residue was diluted with water (25 mL)
  3. washThe aqueous solution was washed with diethyl ether (25 mL)
  4. customto remove any neutral impurities
  5. extractionwas extracted with ethyl acetate (2×25 mL)
  6. washThe combined organic extracts were washed with brine solution (50 mL)
  7. dry with materialwere dried over anhydrous magnesium sulfate
  8. filtrationFiltration of the drying agent and concentration of the filtrate

Sources & evidence

ORD record
ord-196ca1d7d2334db5b3f9d84ac781bb1e
Source dataset
uspto-grants-2005_07
Patent number
US06916933B2

Reaction notes

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