Hydrochloric Acid → 5-Hydroxybenzo[b]thiophene-3-carboxylic acid
Reaktionsgleichung
C1(S([O:10][C:11]2[CH:22]=[CH:21][C:14]3[S:15][CH:16]=[C:17]([C:18]([OH:20])=[O:19])[C:13]=3[CH:12]=2)(=O)=O)C=CC=CC=1.Cl>[OH-].[Na+]>[OH:10][C:11]1[CH:22]=[CH:21][C:14]2[S:15][CH:16]=[C:17]([C:18]([OH:20])=[O:19])[C:13]=2[CH:12]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 40 °C
Versuchsvorschrift
5-Benzenesulfonyloxybenzo[b]thiophene-3-carboxylic acid (6) (100 mg, 0.3 mmol) prepared in Examples above was dissolved in 1 N sodium hydroxide (1.2 ml) and heated at 40° C. for 8 hours with stirring. To the reaction solution was added 1 N hydrochloric acid (1.2 ml), and the deposited crystals were filtered, washed with water and dried to provide 58 mg of the title compound (11). Yield: 96.6% mp 262-263° C.