1-Chloro-2-fluoroethane → 2-(2-Fluoroethylthio)-phenylsulfonamide

Beteiligte Stoffe

Reaktionsschritte

A mixture of 5.8 g of the 2-mercaptophenylsulfonamide triethylamine salt obtained in accordance with Example H6 and 1.7 g of 2-chloro-1-fluoroethane in 40 ml of methanol is stirred in a bomb tube for 23 hours at a temperature of +50° to +55° C. The reaction mixture is then evaporated and water is added to the residue which remains. The mixture is extracted with ethyl acetate, and the organic phase is washed and dried. Evaporation of the solution gives 3.5 g of 2-(2-fluoroethylthio)-phenylsulfonamide (74.5% of theory) having a melting point of +83° to +85° C.

Herkunft & Nachweise