反应详情

2,4-Dichloropyrimidine (200 mg, 1.34 mmol), 2,4-difluoroaniline (173 mg, 1.34 mmol) and diisopropylethylamine (0.26 ml, 1.48 mmol) were dissolved in n-butanol (5 ml). The reaction mixture was heated at reflux for 12 hours, cooled and evaporated onto silica (5 ml). The residue was purified by column chromatography and eluted with EtOAc (30%): isohexane to give the title product as a solid on evaporation (174 mg, 54%). NMR (300 MHz): 6.70 (d, 1H), 7.12 (t, 1H), 7.38 (t, 1H), 7.70 (dd, 1H), 8.14 (d, 1H), 9.74 (brs, 1H); m/z: (ES+) 242.1 (MH+).

1. temperatureThe reaction mixture was heated
2. temperatureat reflux for 12 hours
3. temperaturecooled
4. customevaporated onto silica (5 ml)
5. customThe residue was purified by column chromatography
6. washeluted with EtOAc (30%)