反应详情

This compound was prepared from 1-(2-bromo-4-fluoro-phenyl)-ethanone (2.5 g, 11.52 mmol) in the manner described for 2-bromo-1-(2,5-dichlorophenyl)-ethanone (Method I-2), affording 2.14 g (63%) of 2-bromo-1-(2-bromo-4-fluoro-phenyl)-ethanone as a clear oil. 1H-NMR (CD2Cl2) δ 7.57 (dd, J=9, 6 Hz, 1H), 7.44 (dd, J=8, 2 Hz, 1H), 7.21 ((m, 7.21–7.14, 1H), 4.51 (s, 2H); TLC Rf=0.38, 15% ethyl acetate-hexanes.