Tetrahydrofuran → 3-(2,6-Dichloro-phenyl)-2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid

HRID 19344Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 19344
C[O:2][C:3](=[O:29])[CH:4]([N:14]1[CH2:18][C:17]([O:19][C:20]2[C:25]([F:26])=[CH:24][CH:23]=[CH:22][C:21]=2[F:27])=[CH:16][C:15]1=[O:28])[CH2:5][C:6]1[C:11]([Cl:12])=[CH:10][CH:9]=[CH:8][C:7]=1[Cl:13].O1CCCC1.O.[OH-].[Li+]>O>[Cl:13][C:7]1[CH:8]=[CH:9][CH:10]=[C:11]([Cl:12])[C:6]=1[CH2:5][CH:4]([N:14]1[CH2:18][C:17]([O:19][C:20]2[C:21]([F:27])=[CH:22][CH:23]=[CH:24][C:25]=2[F:26])=[CH:16][C:15]1=[O:28])[C:3]([OH:29])=[O:2]

Komponenten

5

Edukt 3

HCID 8028TetrahydrofuranHCID 168937Lithium hydroxide, monohydrateHCID 668937393-(2,6-Dichloro-phenyl)-2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid methyl ester

Produkt 1

HCID 668948733-(2,6-Dichloro-phenyl)-2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acidAusbeute 74 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
25 °C

Versuchsvorschrift

A mixture of 3-(2,6-dichloro-phenyl)-2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid methyl ester (56 mg, 0.13 mmol) in a 1:1 solution of tetrahydrofuran:water (4 mL) was treated with lithium hydroxide monohydrate (11 mg, 0.26 mmol). The mixture was then stirred for 1 h at 25° C. After such time, the mixture was concentrated in vacuo to remove the tetrahydrofuran and then diluted with 1N aqueous hydrochloric acid until the pH was acidic and then extracted with ethyl acetate. The organic layers were dried over sodium sulfate and concentrated in vacuo to afford 3-(2,6-dichloro-phenyl)-2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid (40 mg, 74%) as a tan solid: HR-ES-MS m/z calculated for C19H13NO4Cl2F2 [M+H]+ 428.0263, observed 428.0263.

Aufarbeitung

  1. concentrationAfter such time, the mixture was concentrated in vacuo
  2. customto remove the tetrahydrofuran
  3. additiondiluted with 1N aqueous hydrochloric acid until the pH
  4. extractionextracted with ethyl acetate
  5. dry with materialThe organic layers were dried over sodium sulfate
  6. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-90308d5bd24241f3af084306973d5996
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07741327B2

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