Lithiation of 1-benzenesulfonylimidazole. Characterization of authentic 2-lodoimidazole

Lilhiulion of 1-betizenesulfonylimidazole takes place readily at ?20° or 0° in THE. The lithium reagent gives products of addition to typical carhonyl compounds but only in low yield, lodination occurs at the 2-position, in low yield, and authentic 2-iodoimidazole is obtained by cleavage ol the henzenesulfonyl group.