反应详情

温度

120 °C

To a solution of 0.250 g (1.17 mmol) of ethyl 2-(4-chloropyrimidin-5-yl)propanoate from step A above in 5 mL of absolute methanol was dissolved 0.054 g (2.34 mmol) of sodium metal. The resulting solution was heated under microwave conditions at 120° C. for 10 min. All volatiles were removed in vacuo and the residue was diluted with saturated sodium bicarbonate and extracted with dichloromethane (3×10 mL). The combined organic layers were washed with brine, dried over magnesium sulfate, filtered and evaporated to dryness in vacuo to afford the title compound as a clear gum (0.21 g, 93%). 1H-NMR (500 MHz, CD3OD) δ: 8.65 (s 1H), 8.36 (s, 1H), 4.0 (s, 3H), 3.9 (q, J=7 Hz, 2H), 3.66 (s, 3H), 1.58 (d, J=7 Hz, 3H). LC-MS: m/z (E/S) 197 (MH)+.

1. customAll volatiles were removed in vacuo
2. additionthe residue was diluted with saturated sodium bicarbonate
3. extractionextracted with dichloromethane (3×10 mL)
4. washThe combined organic layers were washed with brine
5. dry with materialdried over magnesium sulfate
6. filtrationfiltered
7. customevaporated to dryness in vacuo