反应详情

A mixture of 4-(4-((quinolin-2-yl)methoxy)phenyl)-3-(pyridin-4-yl)but-3-en-2-one (1.00 g, 2.60 mmol) and p-toluensulfonylhydrazine (484 mg, 2.6 mmol) in acetic acid (14 mL) was heated at reflux for 10 h. Additional p-toluenesulfonylhydrazine (242 mg, 0.5 mmol) was added and the mixture heated at reflux 2 h. The mixture was concentrated, the residue dissolved in dichloromethane and the resulting solution washed with water (2×25 mL), dried and concentrated. The residue was chromatographed on silica eluted with 1%, 2%, and 3% methanol in dichloromethane containing 0.5% concentrated ammonium hydroxide giving a solid which was triturated with ether and dried. Yield 293 mg, 29%. 1H NMR (CDCl3, 400 mHz) δ 8.51 (m, 2H), 8.18 (d, 1H, J=8.7 Hz), 8.06 (d, 1H, J=7.9 Hz), 7.81 (d, 1H, J=8.3 Hz), 7.72 (m, 1H), 7.64 (d, 1H, J=8.3 Hz), 7.54 (m, 1H), 7.24 (m, 2H), 7.13 (m, 2H), 6.96 (m, 2H), 5.36 (s, 2H), 2.33 (s, 3H). HPLC-MS (system 1) 4.65 min, m/e 393 (MH+).

1. temperaturewas heated
2. temperatureat reflux for 10 h
3. temperaturethe mixture heated
4. temperatureat reflux 2 h
5. concentrationThe mixture was concentrated
6. dissolutionthe residue dissolved in dichloromethane
7. washthe resulting solution washed with water (2×25 mL)
8. customdried
9. concentrationconcentrated
10. customThe residue was chromatographed on silica
11. washeluted with 1%, 2%, and 3% methanol in dichloromethane containing 0.5% concentrated ammonium hydroxide giving a solid which
12. customwas triturated with ether
13. customdried
14. customHPLC-MS (system 1) 4.65 min, m/e 393 (MH+)