反应 #3172134
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US07138530B2
反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: Sodium hydride (53 mg, 2.2 mmol) was added to a 0° C. solution of 2-iodo-3-methyl-phenyl-methanol ((Example 5: step a) 492 mg, 2 mmol) in DMF (20 mL). The solution was stirred at 0° C. for 30 min and tert-butyl bromoacetate (0.4 mL, 2.5 mmol) was added. The solution was warmed to rt over 15 min and stirred for 3 h at rt. EtOAc (80 mL) and water (40 mL) were added, the layers were separated, and the organic layer was washed with water (6×20 mL), brine (30 mL), and was dried over sodium sulfate. Concentration of the solution followed by SiO2 flash column chromatography (5–10% EtOAc in hexanes) yielded the title compound (0.571 g, 79%) as an oil. 1H-NMR (CDCl3): δ 7.36 (dd, 1H, J=1.4, 7.4 Hz), 7.30 (t, 1H, 7.4 Hz), 7.24 (dd, 1H, J=1.4, 7.4 Hz), 4.72 (s, 2H), 4.15 (s, 2H), 2.53 (s, 3H), 1.56 (s, 9H). The solution was warmed to rt over 15 min stirred for 3 h at rt the layers were separated the organic layer was washed with water (6×20 mL), brine (30 mL) was dried over sodium sulfate
来源 ID: ord-af14402b84a6484593ed5ef4ba6e2a0b