反应详情

温度

160 °C

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).

1. temperaturecooled
2. filtrationThe precipitated crystal was collected by filtration
3. washwashed with water
4. customThe obtained crystal was dried under reduced pressure