Dimethylformamide → HCID 10100184, compound

Participants

Reaction Steps

To a solution of potassium carbonate (0.056 g, 0.00042 mol) in dry tetrahydrofuran (10 mL) was added, portionwise as a solid, N'-(2,4-difluorophenyl)-N-[5-(4,5 -diphenyl-1H-imidazol-2-ylthio)pentyl]-N-heptylurea (0.2 5 g, 0.00042 mol) and the reaction mixture was stirred at ambient temperature for 10 minutes. To this reaction mixture was added, dropwise, methyl iodide (0.039 mL, 0.0895 g, 0.00063 mol) and the reaction mixture was stirred for 18 hours at ambient temperature. The reaction mixture was then treated with N,N-dimethylformamide (1.0 mL) and methyl iodide (0.1 mL) and the reaction mixture was stirred at reflux for an additional 24 hours. The reaction mixture was cooled, poured into water and extracted with ethyl acetate. The combined organic extracts were dried over magnesium sulfate and concentrated under vacuum. The residue was chromatographed with 3:7 hexane-ethyl acetate to give the title compound (0.13 g, 0.00022 mol) as a yellow oil. 1H NMR (CDCl3) δ 8.1-8.0 (m, 1H), 7.5-7.1 (m, 10H), 6.9-6.7(m, 2H), 6.4(s, 1H), 3.5(s,3H), 3.4-3.2(m, 5H), 1.9-1.2(m, 17H), 0.9(t,3H, J=8 Hz).

Provenance & Evidence