p-Toluenesulfonic acid → HCID 131715124, compound

Participants

Reaction Steps

A mixture of 2-acetamido-1-chloro-3-[4-(4-methylthiophenoxy)benzylamino]benzene (0.413 g), p-toluenesulfonic acid (0.040 g) and toluene (150 ml) was heated under reflux while removing the by-produced water therefrom through a Dean-Stark trap. After the by-production of water ceased, the reaction mixture was cooled to room temperature, washed with a saturated sodium carbonate solution and water and distilled under reduced pressure to remove toluene. The residue was purified by silica gel column chromatography to give 4-chloro-2-methyl-1-[4-(4-methylthiophenoxy)benzyl]benzimidazole (0.375 g) as a colorless liquid. nD22.0 1.6341.

Provenance & Evidence