反应详情

3-Butyryl-4-chloro-8-methylquinoline (4.95 g, 20 mmol), 2-methylaniline (4.27 ml, 40 mmol) and tetrahydrofuran (20 ml) were heated at reflux for 30 minutes, the solvent evaporated and the residue triturated with ethyl acetate/ethanol. The hydrochloride salt was filtered off, converted to free base and recrystallised from ethyl acetate/petroleum ether then from aqueous methanol, to give 3-butyryl-4-(2-methylphenylamino)-8-methylquinoline (1.3 g), m.p. 110°-112°.

1. temperatureat reflux for 30 minutes
2. customthe solvent evaporated
3. customthe residue triturated with ethyl acetate/ethanol
4. filtrationThe hydrochloride salt was filtered off
5. customrecrystallised from ethyl acetate/petroleum ether