Toluene → Benzimidazole

Participants

Reaction Steps

9,10-Dioxo-9,10-dihydro-anthracene-2-carbaldehyde (1.63 g, 6.9 mmol) and N-phenyl-1,2-phenylenediamine (1.27 g, 6.90 mmol) were introduced into a mixture of 80 mL of toluene and 10 mL of acetic acid, and the mixture was refluxed for 12 hours. Solvent was removed and ethanol was poured therein to crystallize it, and then the precipitate was filtered to obtain a benzoimidazole compound ([2-(1-phenyl-1H-benzoimidazole-2-yl)-anthraquinone], 1.14 g, 41%).

Provenance & Evidence