反应详情

To a stirred solution of (4-bromo-3-fluorophenyl)[4-(methyloxy)phenyl]methanone (185) (3.20 g, 10.4 mmol) in benzene (80 mL) was slowly added AlCl3 (5.91 g, 44.2 moL., 4.3 eq) via a powder addition funnel under a nitrogen atmosphere at room temperature. The stirred reaction mixture was heated at reflux for 3 h under a nitrogen atmosphere. The reaction mixture was allowed to cool to room temperature and then poured onto a mixture of 1 N HCl (150 mL) and ice (300 g). The quenched reaction mixture was transferred to a separatory funnel and EtOAc (200 mL) added. The organic phase was separated and the aqueous phase was extracted with EtOAc. The organic phase washed with brine (200 mL), dried over MgSO4, filtered, and the filtrate was concentrated in vacuo to give 3.44 g of a brown solid. Crystallization from toluene yielded 2.68 g (88%) of the title compound 186 as a brown crystalline solid. 1H NMR (400 MHz, DMSO-d6): δ 6.91 (d, J=8.7 Hz, 2 H), 7.43 (d, J=8.2 Hz, 1 H), 7.61 (d, J=8.2 Hz, 1 H), 7.69 (d, J=8.7 Hz, 2 H), 7.89 (t, J=7.1 Hz, 1H), 10.54 (s, 1 H).

1. additionvia a powder addition funnel under a nitrogen atmosphere at room temperature
2. customThe stirred reaction mixture
3. temperaturewas heated
4. temperatureat reflux for 3 h under a nitrogen atmosphere
5. customThe quenched reaction mixture
6. customwas transferred to a separatory funnel
7. customThe organic phase was separated
8. extractionthe aqueous phase was extracted with EtOAc
9. washThe organic phase washed with brine (200 mL)
10. dry with materialdried over MgSO4
11. filtrationfiltered
12. concentrationthe filtrate was concentrated in vacuo