Dimethylformamide → 2-(2-ethylsulfanylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridine

Participants

Reaction Conditions

Reaction Steps

A mixture of N2-methyl-5-trifluoromethylpyridin-2,3-diamine (1.0 g), 2-ethylsulfanylbenzaldehyde (0.96 g), sodium hydrogen sulfite (1.80 g), sodium hydrogen sulfite (1.80 g) and DMF (10 ml) was stirred with heating at 160° C. for 5 hours. The reaction mixture was ice-cooled, and water was added thereto. The precipitated crystal was collected by filtration, and washed with water, then hexane. The obtained crystal was dried under reduced pressure to give 1.09 g of 2-(2-ethylsulfanylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridine (hereinafter referred to as Present Compound 4).

Provenance & Evidence