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Methanol → (S)-3-(3-carboxymethoxy-4-methyl-phenyl)-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester

HRID 1269544
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1269544
[F:1][C:2]([F:34])([F:33])[C:3]1[CH:32]=[CH:31][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][CH2:25][C:26]([O:28]CC)=[O:27])[CH:18]=3)[CH2:12]2)=[O:10])=[CH:5][CH:4]=1.C(=O)([O-])[O-].[K+].[K+].CO>O>[F:33][C:2]([F:1])([F:34])[C:3]1[CH:32]=[CH:31][C:6]([CH2:7][O:8][C:9]([N:11]2[CH2:16][CH2:15][CH2:14][C@@H:13]([C:17]3[CH:22]=[CH:21][C:20]([CH3:23])=[C:19]([O:24][CH2:25][C:26]([OH:28])=[O:27])[CH:18]=3)[CH2:12]2)=[O:10])=[CH:5][CH:4]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 887MethanolHCID 11430Potassium CarbonateHCID 688836293-(3-Ethoxycarbonylmethoxy-4-methyl-phenyl)-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester

Produkt 1

HCID 10003946(S)-3-(3-carboxymethoxy-4-methyl-phenyl)-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl esterAusbeute 97,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962
Water
Lösungsmittel

Versuchsvorschrift

A mixture of 3-(3-ethoxycarbonylmethoxy-4-methyl-phenyl)-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester (118 mg, 0.25 mmol), potassium carbonate (68 mg, 0.49 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 110 mg (97%) of (S)-3-(3-carboxymethoxy-4-methyl-phenyl)-piperidine-1-carboxylic acid 4-trifluoromethyl-benzyl ester as a white solid.

Aufarbeitung

  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

Quellen und Nachweise

ORD-Eintrag
ord-8c258cfdcc434b0faa24879562cbed0f
Quelldatensatz
uspto-grants-2007_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07199243B2

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