Methanol → 3-[3-(1-Carboxy-1-methyl-ethoxy)-4-methyl-phenyl]-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester

HRID 1269536Notes

Reaction equation

HRID 1269536 reaction equation
[F:1][C:2]([F:36])([F:35])[C:3]1[CH:34]=[CH:33][C:6]([CH2:7][O:8][C:9]([N:11]2[CH2:16][CH2:15][CH2:14][CH:13]([C:17]3[CH:22]=[CH:21][C:20]([CH3:23])=[C:19]([O:24][C:25]([C:28]([O:30]CC)=[O:29])([CH3:27])[CH3:26])[CH:18]=3)[CH2:12]2)=[O:10])=[CH:5][CH:4]=1.C(=O)([O-])[O-].[K+].[K+].CO>O>[F:35][C:2]([F:1])([F:36])[C:3]1[CH:34]=[CH:33][C:6]([CH2:7][O:8][C:9]([N:11]2[CH2:16][CH2:15][CH2:14][CH:13]([C:17]3[CH:22]=[CH:21][C:20]([CH3:23])=[C:19]([O:24][C:25]([C:28]([OH:30])=[O:29])([CH3:27])[CH3:26])[CH:18]=3)[CH2:12]2)=[O:10])=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 887MethanolHCID 11430Potassium CarbonateHCID 688868503-[3-(1-Ethoxycarbonyl-1-methyl-ethoxy)-4-methyl-phenyl]-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester

Product 1

HCID 103450363-[3-(1-Carboxy-1-methyl-ethoxy)-4-methyl-phenyl]-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl esterYield 94%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 3-[3-(1-ethoxycarbonyl-1-methyl-ethoxy)-4-methyl-phenyl]-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester (156 mg, 0.31 mmol), potassium carbonate (85 mg, 0.62 mmol), methanol (10 mL) and water (2 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 (50 mL), acidified with 1N aqueous hydrochloric acid and extracted with ethyl acetate (2×50 mL). The combined organic extracts were washed with saturated aqueous sodium chloride, dried over anhydrous sodium sulfate, filtered, concentrated under reduced pressure to yield 139 mg (94%) of 3-[3-(1-carboxy-1-methyl-ethoxy)-4-methyl-phenyl]-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester as a white solid.

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 3 h
  3. concentrationconcentrated under reduced pressure
  4. extractionextracted with ethyl acetate (2×50 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-0e328756097745bc8bc6d54338499c63
Source dataset
uspto-grants-2007_04
Patent number
US07199243B2

Reaction notes

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