反应详情

To a mixture of 4-[2-(4-chloromethyl-2-thiazolyl)ethyl]-5-methyl-2-phenyloxazole (0.64 g), methyl 2-(2-hydroxyphenyl)acetate (0.30 g) and N,N-dimethylformamide (20 mL) was added sodium hydride (60%, oil, 0.09 g) under ice-cooling, and the mixture was stirred at room temperature for 15 hrs. The reaction mixture was poured into water and extracted with ethyl acetate. The organic layer was washed successively with water, 2N aqueous sodium hydroxide solution and saturated brine, dried over anhydrous magnesium sulfate and concentrated. The obtained residue was subjected to silica gel column chromatography to give methyl 2-[2-[[2-[2-(5-methyl-2-phenyl-4-oxazolyl)ethyl]-4-thiazolyl]methoxy]phenyl]acetate as a colorless oil (0.49 g, 60%) from a fraction eluted with ethyl acetate-hexane (1:3, v/v).

1. temperaturecooling
2. extractionextracted with ethyl acetate
3. washThe organic layer was washed successively with water, 2N aqueous sodium hydroxide solution and saturated brine
4. dry with materialdried over anhydrous magnesium sulfate
5. concentrationconcentrated