反应详情

(2-Amino-5-bromo-phenyl)-(4-fluoro-phenyl)-methanone (compound of example A.1) (4 g, 14 mmol), methanesulfonylacetone (2.78 g, 20 mmol) and sodium tetrachloroaureate(III) dihydrate (0.27 g, 0.7 mmol) were heated at reflux in 2-propanol (50 ml) for 4 days. The resulting mixture was evaporated to dryness and the residue extracted with dichloromethane (2×), 1 N NaOH (2×) and NaCl (1×). The crude product was purified by chromatography in heptane/ethyl acetate with a gradient from 100:0 to 70:30. One obtained a light brown solid (1.5 g, 28%). MS: m/z=394 (M).

1. customThe resulting mixture was evaporated to dryness
2. extractionthe residue extracted with dichloromethane (2×), 1 N NaOH (2×) and NaCl (1×)
3. customThe crude product was purified by chromatography in heptane/ethyl acetate with a gradient from 100:0 to 70:30