反应详情

To a solution of 8-benzyloxy-imidazo[1,2-a]pyridine (25.46 g) in EtOH (250 mL) was added Br2 (7.03 mL) in water (7 mL) dropwise at RT. The resulting dark orange suspension was stirred at RT for 1 h. The reaction mixture was diluted with NaOH (90 mL, 1 N) and extracted with DCM. The organic layer was dried over Na2SO4, filtered, and concentrated. The product crashed in the column and tubing during attempted purification. Recovered product provided 8-benzyloxy-3-bromo-imidazo[1,2-a]pyridine (21 g).

1. extractionextracted with DCM
2. dry with materialThe organic layer was dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated
5. custompurification