Dimethyl Sulfoxide → HCID 54501125, compound

Participants

Reaction Steps

To a stirred solution of 0.77 g. of 1-isopropylsulfonyl-2-amino-6-(α-hydroxycarbonylmethylenebenzyl)benzimidazole (from Example 17) in 10 ml. of dimethylsulfoxide containing 0.1 g. of a fifty percent suspension of sodium hydride in mineral oil was added in one portion 0.3 g. of methyl iodide. The reaction mixture was stirred at room temperature for fifteen minutes, and then was diluted by the addition of 50 ml. of water. The aqueous mixture was extracted several times with ethyl acetate. The extracts were combined, washed with water, dried, and the solvent was removed by evaporation under reduced pressure to provide 1-isopropylsulfonyl-2-amino-6-(α-methoxycarbonylmethylenebenzyl)benzimidazole as a yellow solid.

Provenance & Evidence