Reaktion #1755455

Reaktionsgleichung

1-(4′-phenylsulfonylphenyl)benzimidazole

trimethyloxonium tetrafluoroborate

ethanol

→

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

Ausbeute 80.0%

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

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

Vorschrift

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%.

Quelle