Hydrochloric Acid → Ethyl Acetate

HRID 860697Notes

Reaction equation

HRID 860697 reaction equation
C[O:2][C:3](=[O:35])[CH2:4][CH2:5][C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:13][CH:14]([C:16]2[N:17]=[C:18]([C:22]3[CH:27]=[CH:26][C:25]([C:28]4[N:33]=[CH:32][CH:31]=[CH:30][N:29]=4)=[CH:24][CH:23]=3)[S:19][C:20]=2[CH3:21])[CH3:15])=[CH:8][C:7]=1[CH3:34].[OH-:36].[Na+].Cl>O1CCCC1.C(OCC)(=O)C>[CH3:34][C:7]1[CH:8]=[C:9]([O:12][CH2:13][CH:14]([C:16]2[N:17]=[C:18]([C:22]3[CH:27]=[CH:26][C:25]([C:28]4[N:33]=[CH:32][CH:31]=[CH:30][N:29]=4)=[CH:24][CH:23]=3)[S:19][C:20]=2[CH3:21])[CH3:15])[CH:10]=[CH:11][C:6]=1[CH2:5][CH2:4][C:3]([OH:35])=[O:2].[C:9]([O:12][CH2:13][CH3:14])(=[O:36])[CH3:8]

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 58765697HCID 58765697, compound

Product 2

HCID 8857Ethyl AcetateYield 68%HCID 10310884HCID 10310884, compound

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

3-(2-Methyl-4-{2-[5-methyl-2-(4-pyrimidin-2-yl-phenyl)-thiazol-4-yl]-propoxy}-phenyl)-propionic acid methyl ester (698 mg, 1.43 mmol) is dissolved in tetrahydrofuran (2 mL) and 5N sodium hydroxide (2 mL) solution is added with stirring at room temperature. The reaction is heated to reflux and monitored by HPLC. Upon complete conversion, the reaction is allowed to cool to room temperature and neutralized with 5N hydrochloric acid (2 mL), diluted with ethyl acetate, and extracted. The organic layer is washed with water and brine, dried over anhydrous sodium sulfate, filtered, and concentrated. The pure 3-(2-Methyl-4-{2-[5-methyl-2-(4-pyrimidin-2-yl-phenyl)-thiazol-4-yl]-propoxy}-phenyl)-propionic acid (462 mg, 0.9755 mmol) may also be obtained by recrystalization from ethyl acetate (68% yield), MS (ES): ?? (M++1).

Workup

  1. temperatureThe reaction is heated
  2. temperatureto reflux
  3. extractionextracted
  4. washThe organic layer is washed with water and brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-197862121bdf4fb782c4b923840925c9
Source dataset
uspto-grants-2006_12
Patent number
US07153878B2

Reaction notes

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