Iodoethane → HCID 22402939, compound

Participants

Reaction Steps

Sodium hydride (1.38 g, 46.0 mmol, 80% oil dispersion) is added in portions to a solution of dimethyl 1-benzyl-2-methyl-4,5-benzimidazoledicarboxylate (10.9 g, 43.8 mmol) in dry dimethylformamide at 0° C. After evolution of hydrogen ceases, ethyl iodide (3.68 mL, 46.1 mmol) is added. The reaction mixture is stirred at room temperature overnight, treated with ethyl acetate, and filtered. The filtrate is concentrated in vacuo; the resultant residue is recrystallized from 50% ethyl acetate:hexanes to yield the title product as a light yellow powder (3.84 g, 31.7%), mp 126.5°-128° C.

Provenance & Evidence