1-(2-bromo-4-chlorophenyl)-8-Chloro-5-(1-ethylpropyl)-2,3-dihydro-1H-imidazo[1,2-a]benzimidazole → 5-Chloro-2-[8-chloro-5-(1-ethylpropyl)-2,3-dihydro-1H-imidazo[1,2-a]benzimidazol-1-yl]benzonitrile

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-(2-bromo-4-chlorophenyl)-8-chloro-5-(1-ethylpropyl)-2,3-dihydro-1H-imidazo[1,2-a]benzimidazole (30.7 mg, 0.0677 mmol) in 1-methyl-2-pyrrolidone (0.5 mL) was added copper(I) cyanide (18.2 mg, 0.203 mmol). The reaction mixture was stirred at 150° C. for 6 hr. After cooling, the reaction mixture was diluted with water and ethyl acetate and the precipitate was removed by filtration. The filtrate was extracted with ethyl acetate (×3). The combined organic layer was washed with water, brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography eluting with a 0-15% ethyl acetate/n-hexane gradient mixture to give the title compound as an amorphous (18.7 mg, 0.468 mmol, 69%).

Provenance & Evidence