Donepezil → HCID 24801487, compound

HRID 1888050Notes

Reaction equation

HRID 1888050 reaction equation
[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(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]

Participants

4

Reactant 2

HCID 3152DonepezilHCID 444972Fumaric Acid

Product 1

HCID 24801487HCID 24801487, compound

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

Fumaric acid (1.16 g, dissolved in 35 ml of absolute ethanol) is slowly added to a solution of Donepezil (3.79 g) in ethyl acetate (70 ml) with stirring at room temperature. The solid precipitated is filtered and dried at 55° C. under vacuum to give the title compound. Melting point: 167.7° C.

Workup

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

Sources & evidence

ORD record
ord-f1be81983fc14148a325a52fadcdeb1f
Source dataset
uspto-grants-2013_08
Patent number
US08501779B2

Reaction notes

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