Hydrochloric Acid → Firategrast

HRID 1454112Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1454112
[F:1][C:2]1[CH:37]=[CH:36][CH:35]=[C:34]([F:38])[C:3]=1[C:4]([NH:6][C@@H:7]([CH2:13][C:14]1[CH:19]=[CH:18][C:17]([C:20]2[C:25]([O:26][CH3:27])=[CH:24][C:23]([CH2:28][O:29][CH2:30][CH3:31])=[CH:22][C:21]=2[O:32][CH3:33])=[CH:16][CH:15]=1)[C:8]([O:10]CC)=[O:9])=[O:5].Cl>O.O1CCOCC1>[F:1][C:2]1[CH:37]=[CH:36][CH:35]=[C:34]([F:38])[C:3]=1[C:4]([NH:6][C@@H:7]([CH2:13][C:14]1[CH:15]=[CH:16][C:17]([C:20]2[C:21]([O:32][CH3:33])=[CH:22][C:23]([CH2:28][O:29][CH2:30][CH3:31])=[CH:24][C:25]=2[O:26][CH3:27])=[CH:18][CH:19]=1)[C:8]([OH:10])=[O:9])=[O:5]

Komponenten

5

Edukt 2

HCID 313Hydrochloric AcidHCID 11237832HCID 11237832, Verbindung

Produkt 1

HCID 9935681FirategrastAusbeute 90 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

To a solution of ethyl (αS)-α-[(2,6-difluorobenzoyl)amino]-4′-ethoxymethyl-2′,6′-dimethoxy(1,1′-biphenyl)-4-propionate (500 mg) in water (12.6 ml) and dioxane (50 ml) was added hydrochloric acid (12.4 g) and the mixture was stirred for 60 hours at 60° C. The organic solvent was removed in vacuo and the aqueous layer was cooled. The crystalline precipitates were collected by filtration and recrystallized from ethanol-water to yield (αS)-α-[(2,6-difluorobenzoyl)amino]-4′-ethoxymethyl-2′,6′-dimethoxy(1,1′-biphenyl)-4-propionic acid (426 mg). The physicochemical data were the same as that obtained in Example 1.

Aufarbeitung

  1. customThe organic solvent was removed in vacuo
  2. temperaturethe aqueous layer was cooled
  3. customThe crystalline precipitates
  4. filtrationwere collected by filtration
  5. customrecrystallized from ethanol-water

Quellen und Nachweise

ORD-Eintrag
ord-87be99053b094cac8fd986cbd9be5ba4
Quelldatensatz
uspto-grants-2009_01
Patentnummer
US07476758B2

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