Potassium Hydroxide → 5-(4-Carboxymethylphenylthio)thiophene-2-sulfonamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

4-Mercaptophenylacetic acid (2.3 g) was dissolved in dimethylformamide under a nitrogen atmosphere and 1.8 g of potassium hydroxide dissolved in a minimum amount of water was added. 5-bromothiophene-2-sulfonamide (3.3 g) dissolved in dimethylformamide was added and the mixture heated at 120° C. for 2 hours. After cooling to room temperature water was added to the reaction mixture, the pH was adjusted to 8.6 and the mixture was extracted with ethyl acetate. The aqueous phase was separated and acidified, causing a solid to precipitate. The solid was collected by filtration and dried under vacuum to a weight of 3.25 g.

Herkunft & Nachweise