Losartan → Losartan potassium salt

HRID 917002

Reaktionsgleichung

Reaktionsgleichung von HRID 917002
[CH3:1][CH2:2][CH2:3][CH2:4][C:5]1[N:9]([CH2:10][C:11]2[CH:12]=[CH:13][C:14]([C:17]3[CH:18]=[CH:19][CH:20]=[CH:21][C:22]=3[C:23]3[N:27]=[N:26][NH:25][N:24]=3)=[CH:15][CH:16]=2)[C:8]([CH2:28][OH:29])=[C:7]([Cl:30])[N:6]=1.[OH-].[K+:32]>C(O)(C)C.O.CCCCCCC>[CH3:1][CH2:2][CH2:3][CH2:4][C:5]1[N:9]([CH2:10][C:11]2[CH:16]=[CH:15][C:14]([C:17]3[CH:18]=[CH:19][CH:20]=[CH:21][C:22]=3[C:23]3[N:27]=[N:26][N-:25][N:24]=3)=[CH:13][CH:12]=2)[C:8]([CH2:28][OH:29])=[C:7]([Cl:30])[N:6]=1.[K+:32]

Komponenten

6

Edukt 2

HCID 3961LosartanHCID 14797Potassium Hydroxide

Produkt 1

HCID 11476710Losartan potassium saltAusbeute 48 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 3776IsopropanolLösungsmittelHCID 8900HeptaneLösungsmittel

Versuchsvorschrift

To 40.81 g losartan of Example 1 in 235 ml i-propanol, a solution of 5.5 g potassium hydroxide in 5.7 ml of water was added at a temperature of 38-40° C. to a pH 12 during half an hour. Approximately 35 ml of azeotropic mixture i-propanol/water were removed by distillation, 141.5 ml of n-heptane were added, and reaction mixture was stirred at room temperature until a white precipitate was formed. The resulting precipitate was diluted with 54 ml n-heptane, filtered, washed with 108 ml n-heptane, and dried in vacuo at 50° C. to yield 21.36 g of losartan potassium.

Aufarbeitung

  1. customApproximately 35 ml of azeotropic mixture i-propanol/water were removed by distillation, 141.5 ml of n-heptane
  2. additionwere added
  3. customreaction mixture
  4. customwas formed
  5. filtrationfiltered
  6. washwashed with 108 ml n-heptane
  7. customdried in vacuo at 50° C.

Quellen und Nachweise

ORD-Eintrag
ord-7dc1418ad6184e2cb35e2918cdc5fd29
Quelldatensatz
uspto-grants-2007_09
Patentnummer
US07271269B2

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