反应详情

A solution of 418 mg (1.34 mmol) 5-chloromethyl-4-cyclopropyl-2-(4-trifluoromethyl-phenyl)-pyrimidine and 300 mg (1.34 mmol) 2-(4-hydroxy-phenoxy)-2-methyl-propionic acid ethyl ester [Newman, Melvin S.; Cella, James A. Monoalkylation of hydroquinone. Journal of Organic Chemistry (1974), 39(2), p 214–15] in 5 ml DMF was treated with 523 mg (1.61 mmol) cesium carbonate. The reaction mixture was stirred 4 h at RT and then it was taken up in ether and washed with 1N HCl and water. The ether layers were concentrated under reduced pressure and the crude product was purified by chromatography over silica gel with AcOEt/heptane 1:4 giving 550 mg of pure 2-{4-[4-cyclopropyl-2-(4-trifluoromethyl-phenyl)-pyrimidin-5-ylmethoxy]-phenoxy}-2-methyl-propionic acid ethyl ester.

1. washwashed with 1N HCl and water
2. concentrationThe ether layers were concentrated under reduced pressure
3. customthe crude product was purified by chromatography over silica gel with AcOEt/heptane 1:4 giving 550 mg of pure 2-{4-[4-cyclopropyl-2-(4-trifluoromethyl-phenyl)-pyrimidin-5-ylmethoxy]-phenoxy}-2-methyl-propionic acid ethyl ester