反应详情

Combined 6-hydrazinylnicotinic acid (167 mg, 1.090 mmol), ethyl 3-(dimethylamino)-2-(2-methoxypyridin-4-yl)acrylate (300 mg, 1.199 mmol), 2-propanol (3632 μl), and hydrochloric acid (1.85% aqueous, 2.15 mL, 1.090 mmol). The reaction was stirred at room temperature. After 1 hour Hunig's base (949 μl, 5.45 mmol) was added to the suspension which became a yellow solution. The reaction was washed with EtOAc (2×15 mL) and the aqueous phase was concentrated in vacuo, yielding a yellow solid. The solid was triturated with 1N HCl (50 mL), collected by filtration, and washed with water. The solid was then slurried in methanol (2×60 mL) and diethyl ether (2×60 mL), the dried under vacuum to give the title compound. MS m/z [M+H]+ 313.0.

1. washThe reaction was washed with EtOAc (2×15 mL)
2. concentrationthe aqueous phase was concentrated in vacuo
3. customyielding a yellow solid
4. customThe solid was triturated with 1N HCl (50 mL)
5. filtrationcollected by filtration
6. washwashed with water
7. dry with materialdiethyl ether (2×60 mL), the dried under vacuum