Bis(2-bromoethyl) ether → 4-[[8-Acetyl-7-[2-(2-bromoethoxy)ethoxy]-2-naphthalenyl]oxy]butanoic acid methyl ester

関与物質

反応手順

Under an argon atmosphere, 2 g (0.007 mol) of 4-[(8-acetyl-7-hydroxy-2-naphthalenyl)oxy]-butanoic acid methyl ester in 5 ml of anhydrous dimethylformamide was added to a suspension of 0.29 g of sodium hydride in 25 ml of anhydrous dimethylformamide. The mixture was stirred at room temperature for 20 minutes and then 7.7 g of bis-(2-bromoethyl)ether was added and the mixture was stirred at room temperature for 20 hours. The solvent was removed and residual oil was purified by high pressure liquid chromatography using 25% ethyl acetate-hexane to yield 1.6 g (54%) of 4-[[8-acetyl-7-[2-(2-bromoethoxy)ethoxy]-2-naphthalenyl]oxy]butanoic acid methyl ester as an oil.

情報源と証拠