Imidazole → 1-(Phenylsulfonyl)-1H-imidazole

Participants

Reaction Steps

A mixture of imidazole (27.2 g, 0.4 mol), and benzenesulphonyl chloride (35.3 g, 0.2 mol) in dry tetrahydrofuran (200 ml) was stirred at ambient temperature for 1 h, when the resulting precipitate was removed by filtration. The filtrate was evaporated under reduced pressure and the resulting solid was recrystallised from benzene/petroleum ether (b.p. 40°-60°), to afford 1-(benzenesulphonyl)imidazole, m.p. 82°-83°.

Provenance & Evidence