Donepezil → Donepezil Maleate

HRID 1888062

Reaktionsgleichung

Reaktionsgleichung von HRID 1888062
[C:1]([OH:8])(=[O:7])/[CH:2]=[CH:3]\[C:4]([OH:6])=[O:5].[CH3:9][O:10][C:11]1[CH:12]=[C:13]2[CH2:22][CH:21]([CH2:23][CH:24]3[CH2:29][CH2:28][N:27]([CH2:30][C:31]4[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=4)[CH2:26][CH2:25]3)[C:19](=[O:20])[C:14]2=[CH:15][C:16]=1[O:17][CH3:18].C(OCCC)CC>C(OCC)(=O)C>[CH3:9][O:10][C:11]1[CH:12]=[C:13]2[CH2:22][CH:21]([CH2:23][CH:24]3[CH2:25][CH2:26][N:27]([CH2:30][C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)[CH2:28][CH2:29]3)[C:19](=[O:20])[C:14]2=[CH:15][C:16]=1[O:17][CH3:18].[C:1]([O-:8])(=[O:7])/[CH:2]=[CH:3]\[C:4]([O-:6])=[O:5]

Komponenten

5

Versuchsvorschrift

Maleic acid (1.161 g, dissolved in 10 ml of absolute ethanol) is slowly added to a solution of Donepezil (3.79 g) in ethyl acetate (20 ml) with stirring at room temperature followed by adding 10 ml of dipropyl ether. The solid precipitated is filtered and dried at 55° C. under vacuum to give the title compound. Melting point: 132.2° C.

Aufarbeitung

  1. customThe solid precipitated
  2. filtrationis filtered
  3. customdried at 55° C. under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-e972cfdd215e4ece8d31f48654aff5ab
Quelldatensatz
uspto-grants-2013_08
Patentnummer
US08501779B2

Verknüpfte Notizen

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