反应详情

Add sodium bicarbonate (0.0823 g, 0.980 mmol) to a stirred solution of 6-[4-(2-benzylamino-ethyl)-phenoxy]-nicotinamide (0.3061 g, 0.881 mmol), (2-bromoethyl)benzene (0.135 mL, 0.988 mmol), and DMF (5 mL). Heat the reaction to reflux for 3 h under nitrogen and then cool to room temperature. Pour the reaction into water (50 mL) and extract with diethyl ether (3×50 mL). Dry the diethyl ether extracts over magnesium sulfate and then filter off the magnesium sulfate. Concentrate on a rotary evaporator and purify the crude product by flash chromatography on silica gel eluting with 90% ethyl acetate/hexanes to yield 0.1538 g (39%) of 6-{4-[2-(benzyl-phenethyl-amino)-ethyl]-phenoxy}-nicotinamide: mass spectrum (ion spray): m/z=452.1 (M+1); 1H NMR (CDCl3): 8.55 (d, 1H), 8.13 (dd, 1H), 7.29-7.11 (m, 14H), 7.01 (d, 2H), 6.92 (d, 1H), 3.71 (s, 1H), 2.94-2.77 (m, 9H).

1. temperatureHeat
2. customthe reaction
3. temperatureto reflux for 3 h under nitrogen
4. additionPour
5. extractionextract with diethyl ether (3×50 mL)
6. dry with materialDry the diethyl ether
7. filtrationfilter off the magnesium sulfate
8. concentrationConcentrate on a rotary evaporator
9. custompurify the crude product by flash chromatography on silica gel eluting with 90% ethyl acetate/hexanes