反应详情

温度

0 °C

tert-Butyllithium (0.978 mL, 1.7M/pentane) was added to a cooled (-78° C.) THF (5 mL) solution of 7-methyl-2-propylimidazo[4,5-b]pyridine (97 mg, 0.554 mmol). After 2 hour the reaction was warmed to 0° C. for 1 minute then cooled back to -78° C. MeI (0.172 mL) was added, the mixture was stirred at -78° C. for 1 hour then warmed to 0° C. for 1 minute and then quenched (NH4OH). Extractive workup and purification (SiO2, 2% MeOH/ EtOAc) gave 85 mg of 7-ethyl-2-propylimidazo[4,5-b]pyridine which was converted to the title compound as outlined in Example 7, Part B.

1. temperaturethen cooled back to -78° C
2. temperaturethen warmed to 0° C. for 1 minute
3. customquenched (NH4OH)
4. customExtractive workup and purification (SiO2, 2% MeOH/ EtOAc)