反应详情

温度

85 °C

A mixture of 3-fluoro-2,4-pentanedione (247 mg, 2.10 mmol), cyanoacetamide (176 mg, 2.1 mmol, 1 equiv) and piperidine (0.21 mL, 2.1 mmol, 1 equiv) in 3 mL of EtOH was heated at 85° C. for 16 h, resulting in a clear but dark brown solution. The mixture was concentrated in vacuo. The residue was taken up in 2 mL of 1N HCl to give a suspension, which was filtered. The tan solids collected were dried under vacuum to give the desired product as 80 mg. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.33 (s, 3H), 2.42 (s, 3H).

1. customresulting in a clear but dark brown solution
2. concentrationThe mixture was concentrated in vacuo
3. customto give a suspension, which
4. filtrationwas filtered
5. customThe tan solids collected
6. customwere dried under vacuum