反应详情

A mixture of 0.90 g (5.3 mmol) of 3,5-dihydroxybenzoic acid methyl ester, 2.95 g (11.8 mmol) of 2-(2-bromoethoxy)naphthalene, 1.8 g (11.8 mmol) of sodium iodide and 3 g (21.7 mmol) of potassium carbonate in 80 mL of acetone and 25 mL of DMF was stirred at reflux for 40 hours. The solvents were removed at reduced pressure, water was added to the residue and the product was extracted with ethyl acetate. The dried extract was concentrated to a solid which was recrystallized from ethyl acetate to give 1.6 g (59% yield, mp 132°-137°) of 3,5-bis[2-[2-(naphthalenyloxy) ethoxy]benzoic acid methyl ester.

1. temperatureat reflux for 40 hours
2. customThe solvents were removed at reduced pressure, water
3. additionwas added to the residue
4. extractionthe product was extracted with ethyl acetate
5. extractionThe dried extract
6. concentrationwas concentrated to a solid which
7. customwas recrystallized from ethyl acetate