Potassium Permanganate → 1,2-Benzisothiazol-3(2H)-one, 5,6-dimethoxy-, 1,1-dioxide
Reaktionsgleichung
[CH3:1][C:2]1[CH:7]=[C:6]([O:8][CH3:9])[C:5]([O:10][CH3:11])=[CH:4][C:3]=1[S:12]([NH2:15])(=[O:14])=[O:13].[Mn]([O-])(=O)(=O)=[O:17].[K+]>[OH-].[Na+]>[CH3:9][O:8][C:6]1[C:5]([O:10][CH3:11])=[CH:4][C:3]2[S:12](=[O:14])(=[O:13])[NH:15][C:1](=[O:17])[C:2]=2[CH:7]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
16 gm (0.08 mol) of 2-methyl-4,5-dimethoxy-benzene sulfonamide were dissolved in 500 ml of an aqueous 5% sodium hydroxide solution, and the solution was heated at its boiling point for 2 hours after addition of 39.6 gm (0.25 mol) of potassium permanganate. After cooling, the reaction mixture was suction-filtered through celite, and the desired product was precipitated by addition of concentrated hydrochloric acid. Rf -value (benzene/acetone = 3/1): 0.2-0.4.