反应详情

温度

60 °C

2.0 g (8.5 mmol) of ethyl 8-hydroxy-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylate Example 87A were initially charged in 122.3 ml of DMF, and 1.23 ml (9.4 mmol) of 1-iodo-3-methylbutane and 6.12 g (18.8 mmol) of caesium carbonate were added. The mixture was stirred at 60° C. for 40 min. The reaction mixture was cooled to RT, 900 ml of water were added and the mixture was stirred at RT for 1 h. The precipitated solid was filtered off, washed with water and dried under high vacuum. This gave 2.25 g (84% of theory; purity 97%) of the title compound.

1. temperatureThe reaction mixture was cooled to RT
2. stirringthe mixture was stirred at RT for 1 h
3. filtrationThe precipitated solid was filtered off
4. washwashed with water
5. customdried under high vacuum