Sodium Hydroxide → HCID 13560490, compound
Reaction equation
C([O:3][C:4]([CH2:6][CH:7]1[NH:12][C:11]2[CH:13]=[C:14]([Cl:21])[C:15]([S:17](=[O:20])(=[O:19])[NH2:18])=[CH:16][C:10]=2[S:9](=[O:23])(=[O:22])[NH:8]1)=[O:5])C.[OH-].[Na+]>C(O)C>[C:4]([CH2:6][CH:7]1[NH:12][C:11]2[CH:13]=[C:14]([Cl:21])[C:15]([S:17](=[O:20])(=[O:19])[NH2:18])=[CH:16][C:10]=2[S:9](=[O:22])(=[O:23])[NH:8]1)([OH:5])=[O:3]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
Combine 3-ethoxycarbonylmethyl-6-chloro-7-sulfamoyl-3, 4-dihydro-1,2,4-benzothiadiazine-1,1-dioxide (7.7 g) with ethanol (EtOH) (250 ml) and 1N sodium hydroxide (NaOH) (70 ml) for 4 hours. Concentrate to 50 ml, add 1N hydrochloric acid (HCl) (70 ml), and extract with ethyl acetate (EtOAc). Dry the EtOAc extract over anhydrous magnesium sulfate and concentrate to obtain 3-carboxymethyl-6-chloro-7-sulfamoyl-3,4-dihydro-1, 2,4-benzothiadiazine-1,1-dioxide.
Workup
- concentrationConcentrate to 50 ml
- additionadd 1N hydrochloric acid (HCl) (70 ml)
- extractionextract with ethyl acetate (EtOAc)
- dry with materialDry the EtOAc
- extractionextract over anhydrous magnesium sulfate
- concentrationconcentrate
Sources & evidence
- ORD record
- ord-5696fc6fffbf4b228f4d20b0ed954d51
- Source dataset
- uspto-grants-1991_05
- Patent number
- US05017567
Reaction notes
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