反应详情

Lithium hydroxide (0.427 g, 17.8 mmol) was added to a stirred suspension of ethyl 6-bromoimidazo[1,2-a]pyridine-3-carboxylate (2.40 g, 8.92 mmol) in 20 mL of a 4:1 mixture of THF/ethanol. The mixture was stirred under nitrogen for 3 days at ambient temperature. The pH of the mixture was adjusted to neutral (by the addition of aqueous mineral acid) inducing a heavy precipitation of off-white colored solids. The solids were isolated by filtration and dried under reduced pressure to give the desired product (2.0 g; 93%).

1. additionby the addition of aqueous mineral acid) inducing
2. customa heavy precipitation of off-white colored solids
3. customThe solids were isolated by filtration
4. customdried under reduced pressure