反应详情

Trifluoroacetic acid (3.5 mL; 47.1 mmol) was added to a solution of 4-acetylbenzonitrile (3.40 g; 23.4 mmol) and [bis-(trifluoroacetoxy)iodo]benzene (20.1 g; 46.7 mmol) in acetonitrile/water (5:1; 300 mL). The reaction mixture was heated under reflux for 18 hours. The solvent was removed in vacuo and the residue partitioned between DCM and 10% aqueous potassium carbonate. The organic phase was poured through a hydrophobic frit and the solvent evaporated in vacuo. The residue was purified by flash chromatography eluting with iso-hexane/EtOAc (10:1 to 4:1) to afford the title compound. 1H NMR (CDCl3, 400 MHz) δ 8.04 (d, J=8.4 Hz, 2H), 7.84 (d, J=8.4 Hz, 2H), 4.91 (d, J=2 Hz, 2H), 3.37 (t, J=2.0 Hz, 2H).

1. temperatureThe reaction mixture was heated
2. temperatureunder reflux for 18 hours
3. customThe solvent was removed in vacuo
4. customthe residue partitioned between DCM and 10% aqueous potassium carbonate
5. additionThe organic phase was poured through a hydrophobic frit
6. customthe solvent evaporated in vacuo
7. customThe residue was purified by flash chromatography
8. washeluting with iso-hexane/EtOAc (10:1 to 4:1)