反应详情

温度

50 °C

To a solution of 5-bromosalicylaldehyde (20.0 g, 0.1 mole) and potassium iodide (17 g, 0.1 mole) in acetonitrile (150 mL) and water (50 mL) in a 500 mL round bottom flask with magnetic stirrer was added chloramine T (23 g, 0.1 mole). The mixture was allowed to react for one hour. The reaction mixture was partitioned between hydrochloric acid (10%, 200 mL) and ethyl acetate. The organic layer was dried (Na2SO4), filtered and concentrated in vacuo. To the residue was added hexanes and the reaction mixture heated to 50° C. for 15 minutes. The undissolved material was removed by filtration. The filtrate was concentrated in vacuo to leave canary yellow 3-iodo-5-bromosalicylaldehyde (26 g).

1. customto react for one hour
2. customThe reaction mixture was partitioned between hydrochloric acid (10%, 200 mL) and ethyl acetate
3. dry with materialThe organic layer was dried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. additionTo the residue was added hexanes
7. customThe undissolved material was removed by filtration
8. concentrationThe filtrate was concentrated in vacuo