反应详情

Then, 5.10 g of 4-bromo-2-trifluoromethyl-1-benzyloxybenzene, 2.34 g of p-ethoxyphenol, 2.13 g of potassium carbonate, 100 mg of copper and 200 mg of cuprous chloride were charged into a reaction vessel, and stirred at 130° C. to 140° C. for 5 hours. The reaction solution was cooled to room temperature, poured into ice-water and then acidified by adding 10% hydrochloric acid. The solution was extracted twice with 100 ml of diethyl ether. Then, the ether layers were combined, washed with water, dried over anhydrous magnesium sulfate and concentrated to give a crude product. This crude product was subjected to silica gel chromatography to give 2.50 g of 2-trifluoromethyl-4-(4-ethoxyphenoxy)-1-benzyloxybenzene, (yield, 41%).

1. extractionThe solution was extracted twice with 100 ml of diethyl ether
2. washwashed with water
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationconcentrated
5. customto give a crude product
6. customto give