反应详情

Anhydrous ethanol (10.5 ml) and diethylacetamide malonate (2661 mg, 12.25 mmols) were added to sodium ethoxide (834 mg, 12.25 mmols). After stirring for 10 minutes, 1-benzyloxy-10-iododecane (Compound q-1) (2661 mg, 12.25 mmols) was added to the mixture. The mixture was heated to reflux for 4 hours and concentrated in vacuo. Chloroform (200 ml) and water (100 ml) were added to the residue for separation. The organic layer was washed with saturated sodium chloride aqueous solution (100 ml), dried over anhydrous sodium sulfate and then concentrated. The residue was purified by silica gel column chromatography (300 ml, hexane:ethyl acetate=4:1) to give Compound (r-2) (5080 mg, yield: 89.7%).

1. temperatureThe mixture was heated
2. temperatureto reflux for 4 hours
3. concentrationconcentrated in vacuo
4. additionChloroform (200 ml) and water (100 ml) were added to the residue for separation
5. washThe organic layer was washed with saturated sodium chloride aqueous solution (100 ml)
6. dry with materialdried over anhydrous sodium sulfate
7. concentrationconcentrated
8. customThe residue was purified by silica gel column chromatography (300 ml, hexane:ethyl acetate=4:1)
9. customto give Compound (r-2) (5080 mg, yield: 89.7%)