Dimethylformamide → HCID 86686761, compound

Participants

Reaction Steps

A mixture of 4,6-dichloro-2-(methylsulfanyl)pyrimidine (700 mg), 2-(difluoromethyl)-4-ethoxy-1H-benzimidazole (761 mg), potassium carbonate (744 mg), and N,N-dimethylformamide (7 mL) was stirred at room temperature overnight. To the mixture was added water, followed by extraction with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The desiccant was removed by filtration and then the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (chloroform:methanol=100:0-80:20) to obtain 1-[6-chloro-2-(methylsulfanyl)pyrimidin-4-yl]-2-(difluoromethyl)-4-ethoxy-1H-benzimidazole (464 mg) (Preparation Example 86-1) and 1,1′-[2-(methylsulfanyl)pyrimidine-4,6-diyl]bis[2-(difluoromethyl)-4-ethoxy-1H-benzimidazole]. 1,1′-[2-(Methylsulfanyl)pyrimidine-4,6-diyl]bis[2-(difluoromethyl)-4-ethoxy-1H-benzimidazole] was suspended in ethyl acetate and warmed. After leaving to be cooled, the insoluble matter was collected by filtration to obtain 1,1′-[2-(methylsulfanyl)pyrimidine-4,6-diyl]bis[2-(difluoromethyl)-4-ethoxy-1H-benzimidazole] (275 mg) (Preparation Example 86-2).

Provenance & Evidence