Reacción #75122

Ecuación de reacción

1,3-dihydro-1-(3-hydroxypropyl)-5-(trifluoromethyl)-2H-benzimidazol-2-one

sulfinyl chloride

→

1-(3-chloropropyl)-1,3-dihydro-5-(trifluoromethyl)-2H-benzimidazol-2-one

Rendimiento 56.0%

Disolventes

trichloromethane

Condiciones de reacción

Tratamiento posterior

1. 1
   TemperaturaUpon completion, the whole is heated
2. 2
   Temperaturato reflux
3. 3
   Temperaturaat reflux temperature
4. 4
   TemperaturaAfter cooling
5. 5
   Otrothe reaction mixture is evaporated
6. 6
   Otrothe residue is crystallized from 2,2'-oxybispropane

Procedimiento

To a stirred mixture of 23 parts of 1,3-dihydro-1-(3-hydroxypropyl)-5-(trifluoromethyl)-2H-benzimidazol-2-one in 150 parts of trichloromethane are added dropwise 32 parts of sulfinyl chloride. Upon completion, the whole is heated to reflux and stirring is continued for 1 hour at reflux temperature. After cooling, the reaction mixture is evaporated and the residue is crystallized from 2,2'-oxybispropane, yielding 14 parts (56%) of 1-(3-chloropropyl)-1,3-dihydro-5-(trifluoromethyl)-2H-benzimidazol-2-one.

Fuente