反应详情

温度

160 °C

Ammonium acetate (25 g) and 2,6,7-trimethyl-4-phenoxy-1-[5-(phenylthio)pentyl]-1H-imidazo[4,5-c]pyridine (2.50 g, 5.80 mmol) were combined and heated at 160° C. in a sealed tube for 2 days. The reaction mixture was cooled to ambient temperature and diluted with water (100 mL). Sodium hydroxide (15%) was added and the mixture was extracted with chloroform (2×150 mL). The combined extracts were dried over magnesium sulfate and then concentrated under reduced pressure. The residue was purified by column chromatography (silica gel eluting with 2% methanol in chloroform) followed by recrystallization from methanol/dichloromethane/hexanes to provide 2,6,7-trimethyl-1-[5-(phenylthio)pentyl]-1H-imidazo[4,5-c]pyridin-4-amine as an off white powder, m.p. 181–183° C.

1. temperatureThe reaction mixture was cooled to ambient temperature
2. extractionthe mixture was extracted with chloroform (2×150 mL)
3. dry with materialThe combined extracts were dried over magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by column chromatography (silica gel eluting with 2% methanol in chloroform)
6. customfollowed by recrystallization from methanol/dichloromethane/hexanes