Water → 1-[(4-methylphenyl)sulfonyl]-2-phenyl-1H-imidazole-4-carbaldehyde

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Reaction Steps

To a solution of 2-phenyl-1H-imidazole-4-carbaldehyde (1.73 g) in N,N-dimethylformamide (35 mL) was added sodium hydride (60% in oil, 483 mg) at room temperature, and the mixture was stirred for 1 hr. 4-Methylphenylsulfonyl chloride (1.92 g) was added, and the mixture was stirred at 50° C. for 30 min. The reaction mixture was cooled, water was added, and the mixture was extracted with ethyl acetate. The extract was washed with water, 1 mol/L hydrochloric acid and saturated aqueous sodium hydrogen carbonate solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent:hexane-ethyl acetate=9:1→7:3), and crystallized from diisopropyl ether to give the title compound as colorless crystals (yield 1.95 g, 60%).

Provenance & Evidence