Sodium Hydroxide → HCID 69336100, compound

HRID 844863Notes

Reaction equation

HRID 844863 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]([CH2:33][CH3:34])[C:26](=[O:32])[N:27]([CH2:30][CH3:31])[C:28]=2[CH3:29])=[CH:19][CH:18]=1)[NH:5][C:6]([C:8]1[C:13]([Cl:14])=[CH:12][CH:11]=[CH:10][C:9]=1[Cl:15])=[O:7].[OH-].[Na+]>C(O)C>[Cl:14][C:13]1[CH:12]=[CH:11][CH:10]=[C:9]([Cl:15])[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]([CH2:33][CH3:34])[C:26](=[O:32])[N:27]([CH2:30][CH3:31])[C:28]=2[CH3:29])=[CH:21][CH:22]=1)=[O:7]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 69336818HCID 69336818, compound

Product 1

HCID 69336100HCID 69336100, compoundYield 80.2%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
50 °C

Procedure

To a suspension of N-[(2,6-dichlorophenyl)carbonyl]-4-(1,3-diethyl-6-methyl-2,4-dioxo-5-pyrimidinyl)-L-phenylalanine methyl ester (0.77 mmol, 0.41 g) in ethanol (2 mL) was added aqueous 1.0 N sodium hydroxide (1.5 mL) at room temperature. The mixture was heated to 50° C. and the resulting clear solution was stirred for 2 h. Then, the ethanol was removed under reduced pressure and the residue was diluted with water (25 mL) and NaOH (2 mL, 1.0N) to dissolve the sodium salt. The aqueous solution was washed with diethyl ether (30 mL) to remove any neutral impurities. The aqueous layer was acidified with 1.0 N HCl and the product was extracted into 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 320 mg (80% yield) of N-[(2,6-dichlorophenyl)carbonyl]-4-(1,3-diethyl-6-methyl-2,4-dioxo-5-pyrimidinyl)-L-phenylalanine as an amorphous white solid. ES-HRMS m/e calcd for C25H25Cl2N3O5 (M+Na) 541.3921, found 541.3925.

Workup

  1. customThen, the ethanol was removed under reduced pressure
  2. additionthe residue was diluted with water (25 mL) and NaOH (2 mL, 1.0N)
  3. dissolutionto dissolve the sodium salt
  4. washThe aqueous solution was washed with diethyl ether (30 mL)
  5. customto remove any neutral impurities
  6. extractionthe product was extracted into ethyl acetate (2×25 mL)
  7. washThe combined organic extracts were washed with brine solution (50 mL)
  8. dry with materialwere dried over anhydrous magnesium sulfate
  9. filtrationFiltration of the drying agent and concentration of the filtrate

Sources & evidence

ORD record
ord-3dbe1552a00645e5ba082b69cb82c9d2
Source dataset
uspto-grants-2002_04
Patent number
US06380387B1

Reaction notes

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