Benzenesulfonic Acid → Clopidogrel Besylate
Reaction equation
[CH3:1][O:2][C:3]([C@@H:5]([N:13]1[CH2:21][C:17]2[CH:18]=[CH:19][S:20][C:16]=2[CH2:15][CH2:14]1)[C:6]1[CH:7]=[CH:8][CH:9]=[CH:10][C:11]=1[Cl:12])=[O:4].[C:22]1([S:28]([OH:31])(=[O:30])=[O:29])[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1>CO>[CH3:1][O:2][C:3]([C@@H:5]([N:13]1[CH2:21][C:17]2[CH:18]=[CH:19][S:20][C:16]=2[CH2:15][CH2:14]1)[C:6]1[C:11]([Cl:12])=[CH:10][CH:9]=[CH:8][CH:7]=1)=[O:4].[CH:25]1[CH:26]=[CH:27][C:22]([S:28]([OH:31])(=[O:30])=[O:29])=[CH:23][CH:24]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
Clopidogrel base was dissolved in methanol to obtain a clear solution. Benzenesulfonic acid was added to the solution at 20° C. The reaction mixture was heated to reflux temperature for 2 to 10 hrs. The solvent was evaporated to dryness under reduced pressure to obtain the title compound.
Workup
- customto obtain a clear solution