Hydrochloric Acid → Firategrast

HRID 1454110Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1454110
[OH-].[Na+].[F:3][C:4]1[CH:39]=[CH:38][CH:37]=[C:36]([F:40])[C:5]=1[C:6]([NH:8][C@@H:9]([CH2:15][C:16]1[CH:21]=[CH:20][C:19]([C:22]2[C:27]([O:28][CH3:29])=[CH:26][C:25]([CH2:30][O:31][CH2:32][CH3:33])=[CH:24][C:23]=2[O:34][CH3:35])=[CH:18][CH:17]=1)[C:10]([O:12]CC)=[O:11])=[O:7].Cl>O.O1CCCC1>[F:3][C:4]1[CH:39]=[CH:38][CH:37]=[C:36]([F:40])[C:5]=1[C:6]([NH:8][C@@H:9]([CH2:15][C:16]1[CH:17]=[CH:18][C:19]([C:22]2[C:23]([O:34][CH3:35])=[CH:24][C:25]([CH2:30][O:31][CH2:32][CH3:33])=[CH:26][C:27]=2[O:28][CH3:29])=[CH:20][CH:21]=1)[C:10]([OH:12])=[O:11])=[O:7]

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 11237832HCID 11237832, Verbindung

Produkt 1

HCID 9935681FirategrastAusbeute 96 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 21881883Oxolane--water (1/1)Lösungsmittel

Versuchsvorschrift

To a solution of sodium hydroxide (2.9 g) in water-tetrahydrofuran (317 ml-159 ml) was added ethyl (αS)-α-[(2,6-difluorobenzoyl)amino]-4′-ethoxymethyl-2′,6′-dimethoxy(1,1′-biphenyl)-4-propionate (31.7 g) at 15° C. and the mixture was stirred for 4 hours at the same temperature. After neutralizing with 1N HCl, the organic solvent was removed in vacuo. 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 (28.8 g).

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-05dc434d64d34e8fb0320530f58f5fc2
Quelldatensatz
uspto-grants-2009_01
Patentnummer
US07476758B2

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