Réaction #1755455

Équation de réaction

1-(4′-phenylsulfonylphenyl)benzimidazole

trimethyloxonium tetrafluoroborate

ethanol

→

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

Rendement 80.0%

Solvants

dichloromethane

Conditions de réaction

Traitement

1. 1
   Filtrationthe precipitate which forms is filtered off
2. 2
   Lavagewashed with cold petroleum ether

Mode opératoire

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%.

Source