Benzimidazole → 1-(4'-Phenylsulfonylphenyl)benzimidazole

Participants

Reaction Conditions

Reaction Steps

To a solution of benzimidazole (11.8 g, 0.10 mol) in DMF (500 ml), is added, at room temperature under nitrogen, sodium hydride (60% in mineral oil, 4.4 g, 0.11 mol), and the mixture is stirred for 10 min. The mixture is admixed with 4-chlorophenyl phenyl sulfone (26.1 g, 0.10 mol) and stirred at 100° C. for 16 h. After again adding sodium hydride (60% in mineral oil, 2.0 g, 0.05 mol) at room temperature, the mixture is stirred at 130° C. for 16 h. After cooling to room temperature, the mixture is added to ice-water. Precipitated product is filtered off and washed with water. Yield: 91%.

Provenance & Evidence