Potassium Carbonate → 4-[[8-Acetyl-7-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]-2-naphthalenyl)oxy]butanoic acid methyl ester

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A mixture of 1.6 g of 4-[[8-acetyl-7-[2-(2-bromoethoxy)ethoxy]-2-naphthalenyl]oxy]butanoic acid methyl ester, 0.82 g of 1-(2,4-dihydroxy-3-propylphenyl)-ethanone and 0.73 g of anhydrous potassium carbonate in 33 ml of anhydrous acetone and 11 ml of anhydrous dimethylformamide was stirred at reflux for 16 hours. The mixture was filtered and filtrate was concentrated to an oil. The oil was purified by high pressure liquid chromatography using 50% ethyl acetate-hexane to give 1.72 g (86%) of 4-[[8-acetyl-7-[2-[2-(4-acetyl-3-hydroxy-2-propylphenoxy)ethoxy]ethoxy]-2-naphthalenyl)oxy]butanoic acid methyl ester as an oil.

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