反应详情

Combine 3-fluoro-5-(1-methyl-piperidin-4-ylsulfanyl)-phenylamine (preparation 114, 0.11 g, 0.46 mmol), 1,4-dioxane (5 mL) and 2-chloro-4-fluoro-benzoyl chloride (0.09 g, 0.46 mmole), stir and heat at reflux. After 3 hr., cool to ambient temperature. Load on an SCX column (10 g), wash with methanol, elute with 2M ammonia/methanol. Concentrate eluent. Purify residue by silica gel flash chromatography eluting with 10% (2M NH3/methanol)/methylene dichloride to obtain the title compound (0.03 g, 17%). Mass spectrum: Obs. m/z 397.0974; calc. m/z 397.0953; 1H NMR (CDCl3) free base: 7.9 (bs, 1H), 7.8 (m, 1H), 7.4 (m, 1H), 7.3 (s, 1H), 7.2 (m, 1H), 7.1 (m, 1H), 6.9 (m, 1H), 3.2 (m, 1H), 2.8 (m, 2H), 2.3 (s, 3H), 2.0 (m, 4H), 1.7 (m, 2H).

1. temperatureheat
2. temperatureat reflux
3. washLoad on an SCX column (10 g), wash with methanol
4. washelute with 2M ammonia/methanol
5. washPurify residue by silica gel flash chromatography eluting with 10% (2M NH3/methanol)/methylene dichloride