反应详情

温度

65 °C

3-Iodo-8-nitroquinoline (D3) (135 g, 0.45 mol), was suspended in dimethylformamide (2.4 L) in a 5 L 3-necked flask fitted with an overhead stirrer, under an argon atmosphere. This mixture was treated successively with anhydrous sodium phenylsulfinate (99.6 g 0.608 mol), and bis-(copper (I) triflate) benzene complex (170 g, 0.338 mol). The resulting slurry was heated to 65° C. for 18 h. The mixture was cooled, filtered and the solvent evaporated in vacuo. Acetone (2.5 L) was added to the residue and the solution filtered. The filtrate was evaporated in vacuo, a further 2.5 L of acetone added and the mixture filtered again. The solvent was evaporated in vacuo and the residue dissolved in chloroform (3 L) and washed with 10% aqueous ammonia (2×2 L), and the organic phase was dried over magnesium sulphate and the solvent evaporated in vacuo. The dark brown residue was purified using a Biotage flash-150 chromatography apparatus (5 kg silica gel) eluting with hexane and increasing proportions of ethyl acetate to give the title compound (D4) (81.5 g, 58%) as a yellow solid;

1. customfitted with an overhead stirrer, under an argon atmosphere
2. temperatureThe mixture was cooled
3. filtrationfiltered
4. customthe solvent evaporated in vacuo
5. additionAcetone (2.5 L) was added to the residue
6. filtrationthe solution filtered
7. customThe filtrate was evaporated in vacuo
8. additiona further 2.5 L of acetone added
9. filtrationthe mixture filtered again
10. customThe solvent was evaporated in vacuo
11. dissolutionthe residue dissolved in chloroform (3 L)
12. washwashed with 10% aqueous ammonia (2×2 L)
13. dry with materialthe organic phase was dried over magnesium sulphate
14. customthe solvent evaporated in vacuo
15. customThe dark brown residue was purified
16. washeluting with hexane
17. temperatureincreasing proportions of ethyl acetate