Reacción #11347

Ecuación de reacción

Thionyl chloride

benzothiazole-6-sulfonic acid

dimethylformamide

→

6-Chlorosulfonylbenzothiazole

Disolventes

dichloroethane

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturathe reaction mixture was heated
2. 2
   Temperaturaat reflux
3. 3
   Otroto yield a clear solution
4. 4
   Temperaturaat reflux
5. 5
   Otrothe solvent was removed in vacuo and excess HCl and thionyl chloride
6. 6
   Otrowas chased by evaporation with dichloroethane

Procedimiento

Thionyl chloride (4 mL) was added to a suspension of the benzothiazole-6-sulfonic acid (0.60 g, 2.79 mmol) in dichloroethane (15 mL) and the reaction mixture was heated at reflux and dimethylformamide (5 mL) was added to the reaction mixture to yield a clear solution. After 1.5 hr. at reflux, the solvent was removed in vacuo and excess HCl and thionyl chloride was chased by evaporation with dichloroethane.

Fuente