反应详情

温度

40 °C

A mixture of diethyl benzylpropanedioate (41 g) and CsF (49.8 g) in 90 mL of DMF was heated at 40° C. with vigorous air bubbling for 3 days. The resulting mixture was diluted with ethyl acetate (800 mL) and washed with water (3×1 L). The organic layer was concentrated and then purified by Biotage silica gel column chromatography (5-20% ethyl acetate in hexanes) to give the title product as a colorless oil. 1H NMR (300 MHz, CDCl3) δ: 7.22-7.26 (m, 5H), 4.23 (q, J=7.2 Hz, 4H), 3.80 (br, 1H), 3.35 (s, 2H), 1.26 (t, J=7.2 Hz, 6H).

1. custombubbling for 3 days
2. additionThe resulting mixture was diluted with ethyl acetate (800 mL)
3. washwashed with water (3×1 L)
4. concentrationThe organic layer was concentrated
5. custompurified by Biotage silica gel column chromatography (5-20% ethyl acetate in hexanes)