Water → HCID 59392453, compound

Participants

Reaction Steps

45.1 g of ascorbic acid (255.2 mmol; 3 eq.) are dissolved in 100 ml of DMF, 521 mg of 4-dimethylaminopyridine (4.27 mmol; 0.05 eq.) are added, and 25 g of 2-phenyl-3H-benzimidazole-5-sulfonyl chloride (85.4 mmol; 1 eq.), dissolved in 66 ml of DMF, are added dropwise at 0° C. The mixture is subsequently warmed to room temperature, and, after 6 hrs., 100 ml of water and 100 ml of chloroform are added, the mixture is extracted, dried, and the solvent is removed in vacuo. The residue is recrystallised from toluene, giving the product as a pale-beige solid.

Provenance & Evidence