反应详情

A mixture of 9.5 g (0.037 mol) of 1-(3-bromopropyl)-3,4-dimethoxybenzene [G. H. Douglas, C. R. Walk and H. Smith, J. Med. Chem., 9, 27 (1966)], 7.0 g (0.033 mol) of 2,4-dihydroxy-3-propylbenzoic acid methyl ester, 6.9 g (0.05 mol) of potassium carbonate and 8.3 g (0.05 mol) of potassium iodide in 250 mL of acetone was stirred at reflux for 24 hours. The reaction mixture was filtered and the filtrate was concentrated under reduced pressure to an oil which was purified by high pressure liquid chromatography using 15% ethyl acetate-hexane to give 7.2 g (56% yield) of 4-[3-(3,4-dimethoxyphenyl)propoxy]-2-hydroxy-3-propylbenzoic acid methyl ester as an oil.

1. temperatureat reflux for 24 hours
2. filtrationThe reaction mixture was filtered
3. concentrationthe filtrate was concentrated under reduced pressure to an oil which
4. customwas purified by high pressure liquid chromatography