Sodium Hydroxide → HCID 21497797, compound
Reaction equation
C([NH:4][C:5]1[CH:32]=[CH:31][C:8]([O:9][C:10]2[C:18]([S:19](=[O:22])(=[O:21])[NH2:20])=[CH:17][C:13]([C:14]([OH:16])=[O:15])=[CH:12][C:11]=2[NH:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[CH:7][CH:6]=1)(=O)C.[OH-].[Na+]>>[NH2:4][C:5]1[CH:32]=[CH:31][C:8]([O:9][C:10]2[C:18]([S:19](=[O:21])(=[O:22])[NH2:20])=[CH:17][C:13]([C:14]([OH:16])=[O:15])=[CH:12][C:11]=2[NH:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[CH:7][CH:6]=1Participants
3
Procedure
The mixture of 1.4 g of 4-(4-acetamidophenoxy)-3-benzylamino-5-sulfamoylbenzoic acid and 14 ml of 2N aqueous sodium hydroxide is refluxed for one hour under nitrogen. Aftercooling to room temperature it is filtered and the filtrate acidified with glacial acetic acid to pH = 4. The precipitate formed is filtered off and recrystallized from aqueous ethanol, to yield the 4-(4-aminophenoxy)-3-benzylamino-5-sulfamoylbenzoic acid of the formula ##SPC12##
Workup
- temperatureis refluxed for one hour under nitrogen
- customAftercooling to room temperature
- filtrationis filtered
- customThe precipitate formed
- filtration