反应 #2027534
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US07858643B2
反应条件: temp:115.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: Potassium carbonate (1.4 g, 10 mmol) was added to a solution of ethylene carbonate (1.8 g, 20 mmol) and 4-bromo-2-methoxyphenol (1.05 g, 5 mmol) in 5 mL of toluene under an inert atmosphere. The reaction was heated at 115° C. for 12 h. Water (50 mL) and ethyl acetate (2×100 mL) were added to the reaction mixture to stir. The organic layers were combined, dried, filtered, and evaporated to get a yellow oil residue. The residue was purified by flash chromatography (eluting with 40→45% EtOAc in hexanes) to give compound 8a as a light brown yellow oil (1 g; 4.13 mmol; 82.6% yield); MS (APCI) (M+H)+ 246. 1H NMR (400 MHz, chloroform-D) δ ppm 2.83 (t, J=6.3 Hz, 1H) 3.84 (s, 3H) 3.89-4.01 (m, 2H) 4.03-4.13 (m, 2H) 6.78 (d, J=8.3 Hz, 1H) 6.99 (d, 1H) 7.02 (d, 1H). dried filtered evaporated to get a yellow oil residue The residue was purified by flash chromatography (eluting with 40→45% EtOAc in hexanes)
来源 ID: ord-3fe4d250e1254dcfabc5aef2d73d4ae4