反应详情

A mixture of 5-oxo-hexanenitrile (5 mL, TCI-US), 2-amino-3-formylpyridine (7 g, J. Org. Chem. 1983, vol.48, p3401) and ethanol (100 mL) was heated to reflux for 12 hours. Following evaporation of the solvent, the residue was chromatographed (silica gel, ethyl acetate) to give 4-[1,8]naphthyridin-2-yl-butyronitirile and the title product as colorless solids. 1H (CDCl3) δ 2.29 (3H, s); 2.83 (2H, t); 3.18 (2H, t); 7.48 (1H, dd); 8.04 (1H, s); 8.20 (1H, dd); 9.03 (1H, dd). Step 2

1. temperaturewas heated
2. temperatureto reflux for 12 hours
3. customevaporation of the solvent
4. customthe residue was chromatographed (silica gel, ethyl acetate)
5. customto give 4-[1,8]naphthyridin-2-yl-butyronitirile