Reacción #1755455

Ecuación de reacción

1-(4′-phenylsulfonylphenyl)benzimidazole

trimethyloxonium tetrafluoroborate

ethanol

→

1-(4′-phenylsulfonylphenyl)-3-methylbenzimidazolium tetrafluoroborate

Rendimiento 80.0%

Disolventes

dichloromethane

Condiciones de reacción

Tratamiento posterior

1. 1
   Filtraciónthe precipitate which forms is filtered off
2. 2
   Lavadowashed with cold petroleum ether

Procedimiento

A solution of 1-(4′-phenylsulfonylphenyl)benzimidazole (6.7 g, 20 mmol) in dichloromethane (100 ml) is admixed at −10° C. with trimethyloxonium tetrafluoroborate (3.3 g, 22 mmol) and stirred under argon for 16 h. After adding ethanol, the precipitate which forms is filtered off and washed with cold petroleum ether. Yield: 80%.

Fuente