HCID 178493213, Verbindung → Sodium Hydroxide

HRID 1786725Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1786725
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][N:6]=[C:7]([CH2:11][S+:12]([O-:26])[C:13]2[N-:14][C:15]3[CH:16]=[CH:17][C:18]([O:22][CH:23]([F:25])[F:24])=[CH:19][C:20]=3[N:21]=2)[C:8]=1[O:9][CH3:10].[Na+:27]>CC(C)=O>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][N:6]=[C:7]([CH2:11][S+:12]([O-:26])[C:13]2[NH:14][C:15]3[CH:16]=[CH:17][C:18]([O:22][CH:23]([F:24])[F:25])=[CH:19][C:20]=3[N:21]=2)[C:8]=1[O:9][CH3:10].[OH-:2].[Na+:27]

Komponenten

4

Edukt 1

HCID 178493213HCID 178493213, Verbindung

Produkt 2

HCID 14798Sodium HydroxideHCID 178493214Pantoprazole

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Versuchsvorschrift

Pantoprazole sodium Form II can be prepared by forming a solution of pantoprazole and excess sodium hydroxide in acetone and crystallizing Form II from the solution. Preferably, pantoprazole is added as the free base, though the sodium salt may be used. Excess sodium hydroxide is conveniently added as a concentrated aqueous NaOH solution. Sodium hydroxide should be added in an amount of from about 1 to about 2 molar equivalents with respect to pantoprazole. In a particularly preferred procedure, pantoprazole is dissolved in about 3-6 volumes of acetone. The solution is cooled to about 0° C. Then, the concentrated NaOH solution is added. Crystallization of the novel form of pantoprazole sodium is substantially complete within about 1-5 hours. The crystals can then be separated from the acetone by conventional means, such as by filtering or decanting and they may be washed, preferably with acetone.

Quellen und Nachweise

ORD-Eintrag
ord-ebf0d7669a01422dbfdb9f26b0eb75bf
Quelldatensatz
uspto-grants-2009_03
Patentnummer
US07507829B2

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