3-{4-Chloro-2-[(4-chloro-2-methoxy-6-methylphenyl)amino]-1-methyl-1H-benzimidazol-7-yl}-2,4-dimethylpentan-3-ol → 4-Chloro-N-(4-chloro-2-methoxy-6-methylphenyl)-7-(1-isopropyl-2-methylprop-1-en-1-yl)-1-methyl-1H-benzimidazol-2-amine

Participants

Reaction Steps

A solution of 3-{4-chloro-2-[(4-chloro-2-methoxy-6-methylphenyl)amino]-1-methyl-1H-benzimidazol-7-yl}-2,4-dimethylpentan-3-ol (75 mg, 0.17 mmol) in trifluoroacetic acid (3 mL) was heated at 70° C. for 1 h. After cooling, the reaction mixture was concentrated in vacuo, neutralized with saturated sodium hydrogen carbonate, and extracted with ethyl acetate. The organic layer was dried over magnesium sulfate, filtered, and concentrated in vacuo. The residue was purified by preparative HPLC eluting with a 5-95% acetonitrile/water gradient mixture to give the title compound (58 mg, 80%).

Provenance & Evidence