反应详情

A mixture of 5.0 g of 1-(2,4-dihydroxy-3-propylphenyl)ethanone, 5.4 g of methyl 6-bromohexanoate and 5.4 g of anhydrous potassium carbonate in 50 ml of anhydrous dimethylformamide was stirred and heated at 75° for 10 hours. The solvent was removed in vacuo and the residue was purified by column chromatography on 125 g of silica gel. Elution with 25% ethyl acetate-hexane gave 7.5 g (90% yield) of 6-(4-acetyl-3-hydroxy-2-propylphenoxy)hexanoic acid methyl ester as an oil.

1. temperatureheated at 75° for 10 hours
2. customThe solvent was removed in vacuo
3. customthe residue was purified by column chromatography on 125 g of silica gel
4. washElution with 25% ethyl acetate-hexane