Methanol → (R)-2-methyl-5-{1-[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazole-5-carbonyl]-piperidin-3-yl}-benzoic acid

HRID 1269524Notes

Reaction equation

HRID 1269524 reaction equation
C([O:3][C:4](=[O:36])[C:5]1[CH:10]=[C:9]([C@H:11]2[CH2:16][CH2:15][CH2:14][N:13]([C:17]([C:19]3[S:23][C:22]([C:24]4[CH:29]=[CH:28][C:27]([C:30]([F:33])([F:32])[F:31])=[CH:26][CH:25]=4)=[N:21][C:20]=3[CH3:34])=[O:18])[CH2:12]2)[CH:8]=[CH:7][C:6]=1[CH3:35])C.C(=O)([O-])[O-].[K+].[K+].CO>O>[CH3:35][C:6]1[CH:7]=[CH:8][C:9]([C@H:11]2[CH2:16][CH2:15][CH2:14][N:13]([C:17]([C:19]3[S:23][C:22]([C:24]4[CH:25]=[CH:26][C:27]([C:30]([F:33])([F:31])[F:32])=[CH:28][CH:29]=4)=[N:21][C:20]=3[CH3:34])=[O:18])[CH2:12]2)=[CH:10][C:5]=1[C:4]([OH:36])=[O:3]

Participants

5

Reactant 3

HCID 887MethanolHCID 11430Potassium CarbonateHCID 68884364(R)-2-methyl-5-{1-[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazole-5-carbonyl]-piperidin-3-yl}-benzoic acid ethyl ester

Product 1

HCID 10254929(R)-2-methyl-5-{1-[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazole-5-carbonyl]-piperidin-3-yl}-benzoic acidYield 94.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of (R)-2-methyl-5-{1-[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazole-5-carbonyl]-piperidin-3-yl}-benzoic acid ethyl ester (3.31 g, 6.41 mmol), potassium carbonate (1.77 g, 12.82 mmol), methanol (25 mL) and water (6 mL) was heated at reflux for 3 h, cooled to room temperature and concentrated under reduced pressure. The resulting residue was taken up in water (150 mL), acidified with 1N aqueous hydrochloric acid and extracted with ethyl acetate (2×100 mL). The combined organic extracts were washed with saturated aqueous sodium chloride, dried over anhydrous sodium sulfate, filtered, concentrated under reduced pressure to yield 2.95 g (94%) (R)-2-methyl-5-{1-[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazole-5-carbonyl]-piperidin-3-yl}-benzoic acid as a white solid.

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 3 h
  3. concentrationconcentrated under reduced pressure
  4. extractionextracted with ethyl acetate (2×100 mL)
  5. washThe combined organic extracts were washed with saturated aqueous sodium chloride
  6. dry with materialdried over anhydrous sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-557008ce7d1844cc9b9ae7eb47bd238b
Source dataset
uspto-grants-2007_04
Patent number
US07199243B2

Reaction notes

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